检索结果-内蒙古大学图书馆

Search for Unstable Sterile Neutrinos with the IceCube Neutrino Observatory

Physical Review Letters 2022年第15期129卷 151801-151801页

作者： R. Abbasi M. Ackermann J. Adams J. A. Aguilar M. Ahlers M. Ahrens J. M. Alameddine A. A. Alves, Jr. N. M. Amin K. Andeen T. Anderson G. Anton C. Argüelles Y. Ashida S. Axani X. Bai A. Balagopal V. S. W. Barwick B. Bastian V. Basu S. Baur R. Bay J. J. Beatty K.-H. Becker J. Becker Tjus J. Beise C. Bellenghi S. Benda S. BenZvi D. Berley E. Bernardini D. Z. Besson G. Binder D. Bindig E. Blaufuss S. Blot M. Boddenberg F. Bontempo J. Y. Book J. Borowka S. Böser O. Botner J. Böttcher E. Bourbeau F. Bradascio J. Braun B. Brinson S. Bron J. Brostean-Kaiser R. T. Burley R. S. Busse M. A. Campana E. G. Carnie-Bronca C. Chen Z. Chen D. Chirkin K. Choi B. A. Clark K. Clark L. Classen A. Coleman G. H. Collin J. M. Conrad P. Coppin P. Correa D. F. Cowen R. Cross C. Dappen P. Dave C. De Clercq J. J. DeLaunay D. Delgado López H. Dembinski K. Deoskar A. Desai P. Desiati K. D. de Vries G. de Wasseige M. de With T. DeYoung A. Diaz J. C. Díaz-Vélez M. Dittmer H. Dujmovic M. Dunkman M. A. DuVernois T. Ehrhardt P. Eller R. Engel H. Erpenbeck J. Evans P. A. Evenson K. L. Fan A. R. Fazely A. Fedynitch N. Feigl S. Fiedlschuster A. T. Fienberg C. Finley L. Fischer D. Fox A. Franckowiak E. Friedman A. Fritz P. Fürst T. K. Gaisser J. Gallagher E. Ganster A. Garcia S. Garrappa L. Gerhardt A. Ghadimi C. Glaser T. Glauch T. Glüsenkamp N. Goehlke J. G. Gonzalez S. Goswami D. Grant T. Grégoire S. Griswold C. Günther P. Gutjahr C. Haack A. Hallgren R. Halliday L. Halve F. Halzen M. Ha Minh K. Hanson J. Hardin A. A. Harnisch A. Haungs D. Hebecker K. Helbing F. Henningsen E. C. Hettinger S. Hickford J. Hignight C. Hill G. C. Hill K. D. Hoffman K. Hoshina W. Hou F. Huang M. Huber T. Huber K. Hultqvist M. Hünnefeld R. Hussain K. Hymon S. In N. Iovine A. Ishihara M. Jansson G. S. Japaridze M. Jeong M. Jin B. J. P. Jones D. Kang W. Kang X. Kang A. Kappes D. Kappesser L. Kardum T. Karg M. Karl A. Karle U. Katz M. Kauer M. Kellermann J. L. Kelley A. Kheirandish K. Kin T. Kintscher J. Kiryluk S. R. Klein A. Kochocki R. Koirala H. Kolanoski T. Kontrimas L. Department of Physics Loyola University Chicago Chicago Illinois 60660 USA DESY D-15738 Zeuthen Germany Department of Physics and Astronomy University of Canterbury Private Bag 4800 Christchurch New Zealand Université Libre de Bruxelles Science Faculty CP230 B-1050 Brussels Belgium Niels Bohr Institute University of Copenhagen DK-2100 Copenhagen Denmark Oskar Klein Centre and Department of Physics Stockholm University SE-10691 Stockholm Sweden Department of Physics TU Dortmund University D-44221 Dortmund Germany Karlsruhe Institute of Technology Institute for Astroparticle Physics D-76021 Karlsruhe Germany Bartol Research Institute and Department of Physics and Astronomy University of Delaware Newark Delaware 19716 USA Department of Physics Marquette University Milwaukee Wisconsin 53201 USA Department of Physics Pennsylvania State University University Park Pennsylvania 16802 USA Erlangen Centre for Astroparticle Physics Friedrich-Alexander-Universität Erlangen-Nürnberg D-91058 Erlangen Germany Department of Physics and Laboratory for Particle Physics and Cosmology Harvard University Cambridge Massachusetts 02138 USA Department of Physics and Wisconsin IceCube Particle Astrophysics Center University of Wisconsin–Madison Madison Wisconsin 53706 USA Department of Physics Massachusetts Institute of Technology Cambridge Massachusetts 02139 USA Physics Department South Dakota School of Mines and Technology Rapid City South Dakota 57701 USA Department of Physics and Astronomy University of California Irvine California 92697 USA Department of Physics University of California Berkeley California 94720 USA Department of Astronomy Ohio State University Columbus Ohio 43210 USA Department of Physics and Center for Cosmology and Astro-Particle Physics Ohio State University Columbus Ohio 43210 USA Department of Physics University of Wuppertal D-42119 Wuppertal Germany Fakultät für Physik & Astronomie Ruhr-Universität Bochum D-44780 Bochum Germany Dep

We present a search for an unstable sterile neutrino by looking for a resonant signal in eight years of atmospheric νμ data collected from 2011 to 2019 at the IceCube Neutrino Observatory. Both the (stable) three-neutrino and the 3+1 sterile neutrino models are disfavored relative to the unstable sterile neutrino model, though with p values of 2.8% and 0.81%, respectively, we do not observe evidence for 3+1 neutrinos with neutrino decay. The best-fit parameters for the sterile neutrino with decay model from this study are Δm412=6.7−2.5+3.9 eV2, sin22θ24=0.33−0.17+0.20, and g2=2.5π±1.5π, where g is the decay-mediating coupling. The preferred regions of the 3+1+decay model from short-baseline oscillation searches are excluded at 90% C.L.

关键词： Neutrino oscillations particle decays Sterile neutrinos Neutrino detectors

来源：评论

学校读者我要写书评

暂无评论

Probing the PeV Region in the Astrophysical Neutrino Spectrum using νµ from the Southern Sky

arXiv

引用

arXiv 2025年

作者： Abbasi, R. Ackermann, M. Adams, J. Agarwalla, S.K. Aguilar, J.A. Ahlers, M. Alameddine, J.M. Amin, N.M. Andeen, K. Argüelles, C. Ashida, Y. Athanasiadou, S. Axani, S.N. Babu, R. Bai, X. Balagopal, A.V. Baricevic, M. Barwick, S.W. Bash, S. Basu, V. Bay, R. Beatty, J.J. Tjus, J. Becker Beise, J. Bellenghi, C. BenZvi, S. Berley, D. Bernardini, E. Besson, D.Z. Blaufuss, E. Bloom, L. Blot, S. Bontempo, F. Motzkin, J.Y. Book Meneguolo, C. Boscolo Böser, S. Botner, O. Böttcher, J. Braun, J. Brinson, B. Brisson-Tsavoussis, Z. Brostean-Kaiser, J. Brusa, L. Burley, R.T. Butterfield, D. Campana, M.A. Caracas, I. Carloni, K. Carpio, J. Chattopadhyay, S. Chau, N. Chen, Z. Chirkin, D. Choi, S. Clark, B.A. Coleman, A. Coleman, P. Collin, G.H. Connolly, A. Conrad, J.M. Corley, R. Cowen, D.F. De Clercq, C. DeLaunay, J.J. Delgado, D. Deng, S. Desai, A. Desiati, P. de Vries, K.D. de Wasseige, G. DeYoung, T. Díaz-Vélez, J.C. Dierichs, P. DiKerby, S. Dittmer, M. Domi, A. Draper, L. Dujmovic, H. Durnford, D. Dutta, K. DuVernois, M.A. Ehrhardt, T. Eidenschink, L. Eimer, A. Eller, P. Ellinger, E. Mentawi, S. El Elsässer, D. Engel, R. Erpenbeck, H. Esmail, W. Evans, J. Evenson, P.A. Fan, K.L. Fang, K. Farrag, K. Fazely, A.R. Fedynitch, A. Feigl, N. Fiedlschuster, S. Finley, C. Fischer, L. Fox, D. Franckowiak, A. Fukami, S. Fürst, P. Gallagher, J. Ganster, E. Garcia, A. Garcia, M. Garg, G. Genton, E. Gerhardt, L. Ghadimi, A. Girard-Carillo, C. Glaser, C. Glüsenkamp, T. Gonzalez, J.G. Goswami, S. Granados, A. Grant, D. Gray, S.J. Griffin, S. Griswold, S. Groth, K.M. Guevel, D. Günther, C. Gutjahr, P. Ha, C. Haack, C. Hallgren, A. Halve, L. Halzen, F. Hamacher, L. Hamdaoui, H. Minh, M. Ha Handt, M. Hanson, K. Hardin, J. Harnisch, A.A. Hatch, P. Haungs, A. Häußler, J. Helbing, K. Hellrung, J. Hermannsgabner, J. Heuermann, L. Heyer, N. Hickford, S. Hidvegi, A. Hill, C. Hill, G.C. Hmaid, R. Hoffman, K.D. Hori, S. Hoshina, K. Hostert, M. III. Physikalisches Institut RWTH Aachen University AachenD-52056 Germany Department of Physics University of Adelaide Adelaide5005 Australia Dept. of Physics and Astronomy University of Alaska Anchorage 3211 Providence Dr. AnchorageAK99508 United States Dept. of Physics University of Texas at Arlington 502 Yates St. Science Hall Rm 108 Box 19059 ArlingtonTX76019 United States School of Physics and Center for Relativistic Astrophysics Georgia Institute of Technology AtlantaGA30332 United States Dept. of Physics Southern University Baton RougeLA70813 United States Dept. of Physics University of California BerkeleyCA94720 United States Lawrence Berkeley National Laboratory BerkeleyCA94720 United States Institut für Physik Humboldt-Universität zu Berlin BerlinD-12489 Germany Fakultät für Physik & Astronomie Ruhr-Universität Bochum BochumD-44780 Germany Université Libre de Bruxelles Science Faculty CP230 BrusselsB-1050 Belgium Dienst ELEM BrusselsB-1050 Belgium Dept. of Physics Simon Fraser University BurnabyBCV5A 1S6 Canada Department of Physics Laboratory for Particle Physics and Cosmology Harvard University CambridgeMA02138 United States Dept. of Physics Massachusetts Institute of Technology CambridgeMA02139 United States Dept. of Physics The International Center for Hadron Astrophysics Chiba University Chiba263-8522 Japan Department of Physics Loyola University Chicago ChicagoIL60660 United States Dept. of Physics and Astronomy University of Canterbury Private Bag 4800 Christchurch New Zealand Dept. of Physics University of Maryland College ParkMD20742 United States Dept. of Astronomy Ohio State University ColumbusOH43210 United States Dept. of Physics Center for Cosmology and Astro-Particle Physics Ohio State University ColumbusOH43210 United States Niels Bohr Institute University of Copenhagen CopenhagenDK-2100 Denmark Dept. of Physics TU Dortmund University DortmundD-44221 Germany Dept. of Physics a

IceCube has observed a diffuse astrophysical neutrino flux over the energy region from a few TeV to a few PeV. At PeV energies, the spectral shape is not yet well measured due to the low statistics of the data. This analysis probes the gap between 1 PeV and 10 PeV by using high-energy downgoing muon neutrinos. To reject the large atmospheric muon background, two complementary techniques are combined. The first technique selects events with high stochasticity to reject atmospheric muon bundles whose stochastic energy losses are smoothed due to high muon multiplicity. The second technique vetoes atmospheric muons with the IceTop surface array. Using 9 years of data, we found two neutrino candidate events in the signal region, consistent with expectation from background, each with relatively high signal probabilities. A joint maximum likelihood estimation is performed using this sample and an independent 9.5-year sample of tracks to measure the neutrino spectrum. A likelihood ratio test is done to compare the single power-law (SPL) vs. SPL+cutoff hypothesis;the SPL+cutoff model is not significantly better than the SPL. High-energy astrophysical objects from four source catalogs are also checked around the direction of the two events. No significant coincidence was found. © 2025, CC0.

关键词： Neutron flux

来源：评论

学校读者我要写书评

暂无评论

Analyzing the Abundance Discrepancy Problem in H II Regions with Photoionization Modeling

arXiv

引用

arXiv 2024年

作者： Nemer, Ahmad Méndez-Delgado, J.E. Sattler, Natascha Blanc, Guillermo A. Singh, Amrita Kreckel, Kathryn Gelfand, Joseph D. Drory, Niv New York University Abu Dhabi PO Box 129188 Abu Dhabi United Arab Emirates Center for Astrophysics and Space Science NYU Abu Dhabi PO Box 129188 Abu Dhabi United Arab Emirates Instituto de Astronomía Universidad Nacional Autónoma de México Ap. 70-264 CDMX04510 Mexico Astronomisches Rechen-Institut Zentrum für Astronomie der Universität Heidelberg Mönchhofstr. 12-14 HeidelbergD-69120 Germany Observatories of the Carnegie Institution for Science 813 Santa Barbara Street PasadenaCA91101 United States Departamento de Astronomía Universidad de Chile Camino del Observatorio 1515 Las Condes Santiago Chile Center for Cosmology and Particle Physics New York University 726 Broadway room 958 New YorkNY10003 United States McDonald Observatory The University of Texas at Austin 1 University Station AustinTX78712 United States

Understanding the complex ionization structure and chemical composition of H II regions poses a significant challenge in astrophysics. The abundance discrepancy problem, characterized by inconsistencies between abundances derived from recombination lines (RLs) and collisionally excited lines (CELs), has long been a puzzle in the field. In this theoretical study, we present novel photoionization models that incorporate temperature, density, and chemical inhomogeneities within a single cloud to comprehensively address this discrepancy. By accounting for the intricate interplay between ionization, excitation, and chemistry, our models successfully reproduce both observed RLs and CELs with with an average difference between our models and the observations of 25% – within uncertainties inherent in Galactic archival long-slit and new SDSS-V Local Volume Mapper observations. Through comparisons between generic inhomogeneous model predictions and observations, demonstrating the ability of our theoretical framework to analyze the abundance discrepancy problem within H II regions. Our results highlight the importance of incorporating spatially resolved temperature, density, and chemical structures when interpreting the physical processes governing emission line spectra in these astrophysical environments. © 2024, CC BY-NC-ND.

关键词： Photoionization

来源：评论

学校读者我要写书评

暂无评论

Strong Constraints on Neutrino Nonstandard Interactions from TeV-Scale νμ Disappearance at IceCube

引用

Physical Review Letters 2022年第1期129卷 011804-011804页

作者： R. Abbasi M. Ackermann J. Adams J. A. Aguilar M. Ahlers M. Ahrens J. M. Alameddine C. Alispach A. A. Alves, Jr. N. M. Amin K. Andeen T. Anderson G. Anton C. Argüelles Y. Ashida S. Axani X. Bai A. Balagopal A. Barbano S. W. Barwick B. Bastian V. Basu S. Baur R. Bay J. J. Beatty K.-H. Becker J. Becker Tjus C. Bellenghi S. Benda S. BenZvi D. Berley E. Bernardini D. Z. Besson G. Binder D. Bindig E. Blaufuss S. Blot M. Boddenberg F. Bontempo J. Borowka S. Böser O. Botner J. Böttcher E. Bourbeau F. Bradascio J. Braun B. Brinson S. Bron J. Brostean-Kaiser S. Browne A. Burgman R. T. Burley R. S. Busse M. A. Campana E. G. Carnie-Bronca C. Chen Z. Chen D. Chirkin K. Choi B. A. Clark K. Clark L. Classen A. Coleman G. H. Collin J. M. Conrad P. Coppin P. Correa D. F. Cowen R. Cross C. Dappen P. Dave C. De Clercq J. J. DeLaunay D. Delgado López H. Dembinski K. Deoskar A. Desai P. Desiati K. D. de Vries G. de Wasseige M. de With T. DeYoung A. Diaz J. C. Díaz-Vélez M. Dittmer H. Dujmovic M. Dunkman M. A. DuVernois E. Dvorak T. Ehrhardt P. Eller R. Engel H. Erpenbeck J. Evans P. A. Evenson K. L. Fan A. R. Fazely A. Fedynitch N. Feigl S. Fiedlschuster A. T. Fienberg K. Filimonov C. Finley L. Fischer D. Fox A. Franckowiak E. Friedman A. Fritz P. Fürst T. K. Gaisser J. Gallagher E. Ganster A. Garcia S. Garrappa L. Gerhardt A. Ghadimi C. Glaser T. Glauch T. Glüsenkamp J. G. Gonzalez S. Goswami D. Grant T. Grégoire S. Griswold C. Günther P. Gutjahr C. Haack A. Hallgren R. Halliday L. Halve F. Halzen M. Ha Minh K. Hanson J. Hardin A. A. Harnisch A. Haungs D. Hebecker K. Helbing F. Henningsen E. C. Hettinger S. Hickford J. Hignight C. Hill G. C. Hill K. D. Hoffman R. Hoffmann K. Hoshina F. Huang M. Huber T. Huber K. Hultqvist M. Hünnefeld R. Hussain K. Hymon S. In N. Iovine A. Ishihara M. Jansson G. S. Japaridze M. Jeong M. Jin B. J. P. Jones D. Kang W. Kang X. Kang A. Kappes D. Kappesser L. Kardum T. Karg M. Karl A. Karle U. Katz M. Kauer M. Kellermann J. L. Kelley A. Kheirandish K. Kin T. Kintscher J. Kiryluk S. R. Klein R. Koirala H. Department of Physics Loyola University Chicago Chicago Illinois 60660 USA DESY D-15738 Zeuthen Germany Department of Physics and Astronomy University of Canterbury Private Bag 4800 Christchurch New Zealand Université Libre de Bruxelles Science Faculty CP230 B-1050 Brussels Belgium Niels Bohr Institute University of Copenhagen DK-2100 Copenhagen Denmark Oskar Klein Centre and Department of Physics Stockholm University SE-10691 Stockholm Sweden Department of Physics TU Dortmund University D-44221 Dortmund Germany Département de physique nucléaire et corpusculaire Université de Genève CH-1211 Genève Switzerland Karlsruhe Institute of Technology Institute for Astroparticle Physics D-76021 Karlsruhe Germany Bartol Research Institute and Department of Physics and Astronomy University of Delaware Newark Delaware 19716 USA Department of Physics Marquette University Milwaukee Wisconsin 53201 USA Department of Physics Pennsylvania State University University Park Pennsylvania 16802 USA Erlangen Centre for Astroparticle Physics Friedrich-Alexander-Universität Erlangen-Nürnberg D-91058 Erlangen Germany Department of Physics and Laboratory for Particle Physics and Cosmology Harvard University Cambridge Massachusetts 02138 USA Department of Physics and Wisconsin IceCube Particle Astrophysics Center University of Wisconsin–Madison Madison Wisconsin 53706 USA Department of Physics Massachusetts Institute of Technology Cambridge Massachusetts 02139 USA Physics Department South Dakota School of Mines and Technology Rapid City South Dakota 57701 USA Department of Physics and Astronomy University of California Irvine California 92697 USA Department of Physics University of California Berkeley California 94720 USA Department of Astronomy Ohio State University Columbus Ohio 43210 USA Department of Physics and Center for Cosmology and Astro-Particle Physics Ohio State University Columbus Ohio 43210 USA Department of Physics University of Wuppertal D-42119 Wup

We report a search for nonstandard neutrino interactions (NSI) using eight years of TeV-scale atmospheric muon neutrino data from the IceCube Neutrino Observatory. By reconstructing incident energies and zenith angles for atmospheric neutrino events, this analysis presents unified confidence intervals for the NSI parameter εμτ. The best-fit value is consistent with no NSI at a p value of 25.2%. With a 90% confidence interval of −0.0041≤εμτ≤0.0031 along the real axis and similar strength in the complex plane, this result is the strongest constraint on any NSI parameter from any oscillation channel to date.

关键词： Extensions of fermion sector Flavor changing neutral currents Neutrino interactions Neutrino oscillations particle mixing & oscillations Neutrinos

来源：评论

学校读者我要写书评

暂无评论

The Hydrogen Intensity Real-Time Analysis eXperiment: Overview and Status Update

The Hydrogen Intensity Real-Time Analysis eXperiment: Overvi...

引用

European Conference on Antennas and Propagation, EuCAP

作者： Anthony Walters Keshav Bechoo Shruti Bhatporia H. Cynthia Chiang Devin Crichton Jacobus Diener Sindhu Gaddam Kit Gerodias Austin Gumba Neeraj Gupta Surajit Kalita Emily Kuhn Martin Kunz Kavilan Moodley Warren Naidoo Viraj Nistane Tasmiya Papiah Aditi Pattabhiraman Aritha Pillay Alice Pisani Isibabale Qhoboshiyane Alexandre Refregier Edwin Retana-Montenegro Benjamin R. B. Saliwanchik Ajith Sampath Tsepo Sekhoasha Mugundhan Vijayaraghavan Amanda Weltman Astrophysics Research Centre University of KwaZulu-Natal Westville Campus Durban South Africa School of Mathematics Statistics & Computer Science University of KwaZulu-Natal Westville Campus Durban South Africa Department of Mathematics and Applied Mathematics High Energy Physics Cosmology & Astrophysics Theory (HEPCAT) Group University of Cape Town Cape Town South Africa Department of Physics McGill University Quebec Canada Institute for Particle Physics and Astrophysics ETH Zürich Zürich Switzerland Department of Physics and Astronomy Botswana International University of Science and Technology Palapye Botswana Inter-University Centre for Astronomy and Astrophysics Pune India NASA Jet Propulsion Laboratory California Institute of Technology Pasadena CA USA Département de Physique Théorique and Centre for Astroparticle Physics Université de Genève Geneva Switzerland Stanford University Stanford CA Center for Computational Astrophysics Flatiron Institute New York NY USA The Cooper Union for the Advancement of Science and Art New York NY USA Department of Electronic and Computer Engineering Durban University of Technology Durban South Africa Department of Astrophysical Sciences Peyton Hall Princeton University Princeton NJ USA Instrumentation Division Brookhaven National Laboratory Upton NY USA Onsala Space Observatory Chalmers University of Technology Gothenburg Sweden

The Hydrogen Intensity Real-time Analysis eXperiment (HIRAX) will be a large interferometric array of drift-scan radio telescopes designed to map the large-scale spatial fluctuations of neutral hydrogen in the Universe, in order to better understand the nature of dark energy. It will operate between 400–800 MHz, and is currently under construction in the Karoo desert of South Africa. It will also be a powerful tool for studying astronomical transients and the evolution of galaxies. Here we present an overview of the project, its anticipated deployment timelines, and highlight some of the characterisation and calibration efforts that are currently underway, or planned for the future.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Time-Integrated Southern-Sky Neutrino Source Searches with 10 Years of IceCube Starting-Track Events at Energies Down to 1 TeV

arXiv

引用

arXiv 2025年

作者： Abbasi, R. Ackermann, M. Adams, J. Agarwalla, S.K. Aguilar, J.A. Ahlers, M. Alameddine, J.M. Amin, N.M. Andeen, K. Argüelles, C. Ashida, Y. Athanasiadou, S. Axani, S.N. Babu, R. Bai, X. Balagopal, A.V. Baricevic, M. Barwick, S.W. Bash, S. Basu, V. Bay, R. Beatty, J.J. Tjus, J. Becker Beise, J. Bellenghi, C. BenZvi, S. Berley, D. Bernardini, E. Besson, D.Z. Blaufuss, E. Bloom, L. Blot, S. Bontempo, F. Motzkin, J.Y. Book Meneguolo, C. Boscolo Böser, S. Botner, O. Böttcher, J. Braun, J. Brinson, B. Brisson-Tsavoussis, Z. Brostean-Kaiser, J. Brusa, L. Burley, R.T. Butterfield, D. Campana, M.A. Caracas, I. Carloni, K. Carpio, J. Chattopadhyay, S. Chau, N. Chen, Z. Chirkin, D. Choi, S. Clark, B.A. Coleman, A. Coleman, P. Collin, G.H. Connolly, A. Conrad, J.M. Corley, R. Cowen, D.F. De Clercq, C. DeLaunay, J.J. Delgado, D. Deng, S. Desai, A. Desiati, P. de Vries, K.D. de Wasseige, G. DeYoung, T. Diaz, A. Díaz-Vélez, J.C. Dierichs, P. Dittmer, M. Domi, A. Draper, L. Dujmovic, H. Durnford, D. Dutta, K. DuVernois, M.A. Ehrhardt, T. Eidenschink, L. Eimer, A. Eller, P. Ellinger, E. Mentawi, S.El. Elsässer, D. Engel, R. Erpenbeck, H. Esmail, W. Evans, J. Evenson, P.A. Fan, K.L. Fang, K. Farrag, K. Fazely, A.R. Fedynitch, A. Feigl, N. Fiedlschuster, S. Finley, C. Fischer, L. Fox, D. Franckowiak, A. Fukami, S. Fürst, P. Gallagher, J. Ganster, E. Garcia, A. Garcia, M. Garg, G. Genton, E. Gerhardt, L. Ghadimi, A. Girard-Carillo, C. Glaser, C. Glüsenkamp, T. Gonzalez, J.G. Goswami, S. Granados, A. Grant, D. Gray, S.J. Griffin, S. Griswold, S. Groth, K.M. Guevel, D. Günther, C. Gutjahr, P. Ha, C. Haack, C. Hallgren, A. Halve, L. Halzen, F. Hamacher, L. Hamdaoui, H. Minh, M. Ha Handt, M. Hanson, K. Hardin, J. Harnisch, A.A. Hatch, P. Haungs, A. Häußler, J. Helbing, K. Hellrung, J. Hermannsgabner, J. Heuermann, L. Heyer, N. Hickford, S. Hidvegi, A. Hill, C. Hill, G.C. Hmaid, R. Hoffman, K.D. Hori, S. Hoshina, K. Hostert, M. III. Physikalisches Institut RWTH Aachen University AachenD-52056 Germany Department of Physics University of Adelaide Adelaide5005 Australia Dept. of Physics and Astronomy University of Alaska Anchorage 3211 Providence Dr. AnchorageAK99508 United States Dept. of Physics University of Texas at Arlington 502 Yates St. Science Hall Rm 108 Box 19059 ArlingtonTX76019 United States School of Physics Center for Relativistic Astrophysics Georgia Institute of Technology AtlantaGA30332 United States Dept. of Physics Southern University Baton RougeLA70813 United States Dept. of Physics University of California BerkeleyCA94720 United States Lawrence Berkeley National Laboratory BerkeleyCA94720 United States Institut für Physik Humboldt-Universität zu Berlin BerlinD-12489 Germany Fakultät für Physik & Astronomie Ruhr-Universität Bochum BochumD-44780 Germany Université Libre de Bruxelles Science Faculty CP230 BrusselsB-1050 Belgium Dienst ELEM BrusselsB-1050 Belgium Dept. of Physics Simon Fraser University BurnabyBCV5A 1S6 Canada Department of Physics Laboratory for Particle Physics and Cosmology Harvard University CambridgeMA02138 United States Dept. of Physics Massachusetts Institute of Technology CambridgeMA02139 United States Dept. of Physics The International Center for Hadron Astrophysics Chiba University Chiba263-8522 Japan Department of Physics Loyola University Chicago ChicagoIL60660 United States Dept. of Physics and Astronomy University of Canterbury Private Bag 4800 Christchurch New Zealand Dept. of Physics University of Maryland College ParkMD20742 United States Dept. of Astronomy Ohio State University ColumbusOH43210 United States Dept. of Physics Center for Cosmology and Astro-Particle Physics Ohio State University ColumbusOH43210 United States Niels Bohr Institute University of Copenhagen CopenhagenDK-2100 Denmark Dept. of Physics TU Dortmund University DortmundD-44221 Germany Dept. of Physics and

In the IceCube Neutrino Observatory, a signal of astrophysical neutrinos is obscured by backgrounds from atmospheric neutrinos and muons produced in cosmic-ray interactions. IceCube event selections used to isolate the astrophysical neutrino signal often focus on t/he morphology of the light patterns recorded by the detector. The analyses presented here use the new IceCube Enhanced Starting Track Event Selection (ESTES), which identifies events likely generated by muon neutrino interactions within the detector geometry, focusing on neutrino energies of 1-500 TeV with a median angular resolution of 1.4°. Selecting for starting track events filters out not only the atmospheric-muon background, but also the atmospheric-neutrino background in the southern sky. This improves IceCube’s muon neutrino sensitivity to southern-sky neutrino sources, especially for Galactic sources that are not expected to produce a substantial flux of neutrinos above 100 TeV. In this work, the ESTES sample was applied for the first time to searches for astrophysical sources of neutrinos, including a search for diffuse neutrino emission from the Galactic plane. No significant excesses were identified from any of the analyses;however, constraining limits are set on the hadronic emission from TeV gamma-ray Galactic plane objects and models of the diffuse Galactic plane neutrino flux. © 2025, CC BY.

关键词： cosmology

来源：评论

学校读者我要写书评

暂无评论

Detecting high-frequency gravitational waves with microwave cavities

引用

Physical Review D 2022年第11期105卷 116011-116011页

作者： Asher Berlin Diego Blas Raffaele Tito D’Agnolo Sebastian A. R. Ellis Roni Harnik Yonatan Kahn Jan Schütte-Engel Center for Cosmology and Particle Physics Department of Physics New York University New York New York 10003 USA Theoretical Physics Division Fermi National Accelerator Laboratory Batavia Illinois 60510 USA Superconducting Quantum Materials and Systems Center (SQMS) Fermi National Accelerator Laboratory Batavia Illinois 60510 USA Grup de Física Teòrica Departament de Física Universitat Autònoma de Barcelona 08193 Bellaterra Spain Institut de Fisica d’Altes Energies (IFAE) The Barcelona Institute of Science and Technology Campus UAB 08193 Bellaterra (Barcelona) Spain Université Paris-Saclay CEA Institut de Physique Théorique 91191 Gif-sur-Yvette France Département de Physique Théorique Université de Genève 24 quai Ernest Ansermet 1211 Genève 4 Switzerland Department of Physics University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA Illinois Center for Advanced Studies of the Universe University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA

We give a detailed treatment of electromagnetic signals generated by gravitational waves (GWs) in resonant cavity experiments. Our investigation corrects and builds upon previous studies by carefully accounting for the gauge dependence of relevant quantities. We work in a preferred frame for the laboratory, the proper detector frame, and show how to resum short-wavelength effects to provide analytic results that are exact for GWs of arbitrary wavelength. This formalism allows us to firmly establish that, contrary to previous claims, cavity experiments designed for the detection of axion dark matter only need to reanalyze existing data to search for high-frequency GWs with strains as small as h∼10−22–10−21. We also argue that directional detection is possible in principle using readout of multiple cavity modes. Further improvements in sensitivity are expected with cutting-edge advances in superconducting cavity technology.

关键词： General relativity Gravitational wave detection Gravitational wave sources Gravitational waves Cavity resonators

来源：评论

学校读者我要写书评

暂无评论

Atacama cosmology Telescope: The persistence of neutrino self-interaction in cosmological measurements

引用

Physical Review D 2024年第4期109卷 043501-043501页

作者： Christina D. Kreisch Minsu Park Erminia Calabrese Francis-Yan Cyr-Racine Rui An J. Richard Bond Olivier Doré Jo Dunkley Patricio Gallardo Vera Gluscevic J. Colin Hill Adam D. Hincks Mathew S. Madhavacheril Jeff McMahon Kavilan Moodley Thomas W. Morris Federico Nati Lyman A. Page Bruce Partridge Maria Salatino Cristóbal Sifón David N. Spergel Cristian Vargas Edward J. Wollack Department of Astrophysical Sciences Princeton University Princeton New Jersey 08544 USA Center for Particle Cosmology Department of Physics and Astronomy University of Pennsylvania Philadelphia Pennsylvania 19104 USA School of Physics and Astronomy Cardiff University The Parade Cardiff CF24 3AA United Kingdom Department of Physics and Astronomy University of New Mexico 210 Yale Blvd NE Albuquerque New Mexico 87106 USA Department of Physics and Astronomy University of Southern California Los Angeles California 90007 USA Canadian Institute for Theoretical Astrophysics University of Toronto 60 St. George St. Toronto Ontario M5S 3H8 Canada Jet Propulsion Laboratory California Institute of Technology Pasadena California 91109 USA California Institute of Technology Pasadena California 91125 USA Joseph Henry Laboratories of Physics Jadwin Hall Princeton University Princeton New Jersey 08544 USA Kavli Institute for Cosmological Physics University of Chicago Chicago Illinois 60637 USA Department of Physics Columbia University New York New York 10027 USA Center for Computational Astrophysics Flatiron Institute New York New York 10010 USA David A. Dunlap Department of Astronomy and Astrophysics University of Toronto 50 St. George St. Toronto Ontario M5S 3H4 Canada Specola Vaticana (Vatican Observatory) V-00120 Vatican City State Perimeter Institute for Theoretical Physics 31 Caroline Street N Waterloo Ontario N2L 2Y5 Canada Department of Astronomy and Astrophysics University of Chicago Chicago Illinois 60637 USA Department of Physics University of Chicago Chicago Illinois 60637 USA Enrico Fermi Institute University of Chicago Chicago Illinois 60637 USA Astrophysics Research Centre University of KwaZulu-Natal Westville Campus Durban 4041 South Africa School of Mathematics Statistics and Computer Science University of KwaZulu-Natal Westville Campus Durban 4041 South Africa Department of Physics University of Milano-Bicocca Piazza della Scienza

We use data from the Atacama cosmology Telescope (ACT) DR4 to search for the presence of neutrino self-interaction in the cosmic microwave background. Consistent with prior works, the posterior distributions we find are bimodal, with one mode consistent with ΛCDM and one where neutrinos strongly self-interact. By combining ACT data with large-scale information from WMAP, we find that a delayed onset of neutrino free streaming caused by significantly strong neutrino self-interaction is compatible with these data at the 2−3σ level. As seen in the past, the preference shifts to ΛCDM with the inclusion of Planck data. We determine that the preference for strong neutrino self-interaction is largely driven by angular scales corresponding to 700≲ℓ≲1000 in the ACT E-mode polarization data. This region is expected to be key to discriminate between neutrino self-interacting modes and will soon be probed with more sensitive data.

关键词： Cosmic microwave background Cosmological parameters cosmology Evolution of the Universe Hypothetical particle physics models Large scale structure of the Universe Neutrino interactions particle astrophysics particle interactions particle phenomena Phenomenology Yukawa coupling

来源：评论

学校读者我要写书评

暂无评论

Search for neutrino emission from hard X-ray AGN with IceCube

arXiv

引用

arXiv 2024年

作者： Abbasi, R. Ackermann, M. Adams, J. Agarwalla, S.K. Aguilar, J.A. Ahlers, M. Alameddine, J.M. Amin, N.M. Andeen, K. Argüelles, C. Ashida, Y. Athanasiadou, S. Ausborm, L. Axani, S.N. Bai, X. Balagopal, A.V. Baricevic, M. Barwick, S.W. Bash, S. Basu, V. Bay, R. Beatty, J.J. Tjus, J. Becker Beise, J. Bellenghi, C. Benning, C. BenZvi, S. Berley, D. Bernardini, E. Besson, D.Z. Blaufuss, E. Bloom, L. Blot, S. Bontempo, F. Motzkin, J.Y. Book Meneguolo, C. Boscolo Böser, S. Botner, O. Böttcher, J. Braun, J. Brinson, B. Brostean-Kaiser, J. Brusa, L. Burley, R.T. Butterfield, D. Campana, M.A. Caracas, I. Carloni, K. Carpio, J. Chattopadhyay, S. Chau, N. Chen, Z. Chirkin, D. Choi, S. Clark, B.A. Coleman, A. Collin, G.H. Connolly, A. Conrad, J.M. Coppin, P. Corley, R. Correa, P. Cowen, D.F. Dave, P. De Clercq, C. DeLaunay, J.J. Delgado, D. Deng, S. Desai, A. Desiati, P. de Vries, K.D. de Wasseige, G. DeYoung, T. Diaz, A. Díaz-Vélez, J.C. Dierichs, P. Dittmer, M. Domi, A. Draper, L. Dujmovic, H. Dutta, K. DuVernois, M.A. Ehrhardt, T. Eidenschink, L. Eimer, A. Eller, P. Ellinger, E. Mentawi, S. El Elsässer, D. Engel, R. Erpenbeck, H. Evans, J. Evenson, P.A. Fan, K.L. Fang, K. Farrag, K. Fazely, A.R. Fedynitch, A. Feigl, N. Fiedlschuster, S. Finley, C. Fischer, L. Fox, D. Franckowiak, A. Fukami, S. Fürst, P. Gallagher, J. Ganster, E. Garcia, A. Garcia, M. Garg, G. Genton, E. Gerhardt, L. Ghadimi, A. Girard-Carillo, C. Glaser, C. Glüsenkamp, T. Gonzalez, J.G. Goswami, S. Granados, A. Grant, D. Gray, S.J. Gries, O. Griffin, S. Griswold, S. Groth, K.M. Günther, C. Gutjahr, P. Ha, C. Haack, C. Hallgren, A. Halve, L. Halzen, F. Hamdaoui, H. Minh, M. Ha Handt, M. Hanson, K. Hardin, J. Harnisch, A.A. Hatch, P. Haungs, A. Häußler, J. Helbing, K. Hellrung, J. Hermannsgabner, J. Heuermann, L. Heyer, N. Hickford, S. Hidvegi, A. Hill, C. Hill, G.C. Hoffman, K.D. Hori, S. Hoshina, K. Hostert, M. Hou, W. Huber, T. III. Physikalisches Institut RWTH Aachen University AachenD-52056 Germany Department of Physics University of Adelaide Adelaide5005 Australia Dept. of Physics and Astronomy University of Alaska Anchorage 3211 Providence Dr. AnchorageAK99508 United States Dept. of Physics University of Texas at Arlington 502 Yates St. Science Hall Rm 108 Box 19059 ArlingtonTX76019 United States CTSPS Clark-Atlanta University AtlantaGA30314 United States School of Physics Center for Relativistic Astrophysics Georgia Institute of Technology AtlantaGA30332 United States Dept. of Physics Southern University Baton RougeLA70813 United States Dept. of Physics University of California BerkeleyCA94720 United States Lawrence Berkeley National Laboratory BerkeleyCA94720 United States Institut für Physik Humboldt-Universität zu Berlin BerlinD-12489 Germany Fakultät für Physik & Astronomie Ruhr-Universität Bochum BochumD-44780 Germany Université Libre de Bruxelles Science Faculty CP230 BrusselsB-1050 Belgium Dienst ELEM BrusselsB-1050 Belgium Department of Physics Laboratory for Particle Physics and Cosmology Harvard University CambridgeMA02138 United States Dept. of Physics Massachusetts Institute of Technology CambridgeMA02139 United States Dept. of Physics The International Center for Hadron Astrophysics Chiba University Chiba263-8522 Japan Department of Physics Loyola University Chicago ChicagoIL60660 United States Dept. of Physics and Astronomy University of Canterbury Private Bag 4800 Christchurch New Zealand Dept. of Physics University of Maryland College ParkMD20742 United States Dept. of Astronomy Ohio State University ColumbusOH43210 United States Dept. of Physics Center for Cosmology and Astro-Particle Physics Ohio State University ColumbusOH43210 United States Niels Bohr Institute University of Copenhagen CopenhagenDK-2100 Denmark Dept. of Physics TU Dortmund University DortmundD-44221 Germany Dept. of Physics and Astro

Active Galactic Nuclei (AGN) are promising candidate sources of high-energy astrophysical neutrinos since they provide environments rich in matter and photon targets where cosmic ray interactions may lead to the production of gamma rays and neutrinos. We searched for high-energy neutrino emission from AGN using the Swift-BAT Spectroscopic Survey (BASS) catalog of hard X-ray sources and 12 years of IceCube muon track data. First, upon performing a stacked search, no significant emission was found. Second, we searched for neutrinos from a list of 43 candidate sources and found an excess from the direction of two sources, Seyfert galaxies NGC 1068 and NGC 4151. We observed NGC 1068 at flux (formula presented) normalized at 1 TeV, with power-law spectral index, γ = 3.10+0.26-0.22, consistent with previous IceCube results. The observation of a neutrino excess from the direction of NGC 4151 is at a post-trial significance of 2.9σ. If interpreted as an astrophysical signal, the excess observed from NGC 4151 corresponds to a flux (formula presented) normalized at 1 TeV and γ = 2.83+0.35-0.28 Copyright © 2024, The Authors. All rights reserved.

关键词： Active Galactic Nuclei

来源：评论

学校读者我要写书评

暂无评论

Astrophysical Tests of Dark Matter Self-Interactions

arXiv

引用

arXiv 2022年

作者： Adhikari, Susmita Banerjee, Arka Boddy, Kimberly K. Cyr-Racine, Francis-Yan Desmond, Harry Dvorkin, Cora Jain, Bhuvnesh Kahlhoefer, Felix Kaplinghat, Manoj Nierenberg, Anna Peter, Annika H.G. Robertson, Andrew Sakstein, Jeremy Zavala, Jesús Department of Physics Indian Institute of Science Education and Research Homi Bhaba Road Pashan Pune411008 India Department of Astronomy and Astrophysics The University of Chicago ChicagoIL60637 United States Department of Physics University of Texas at Austin AustinTX78712 United States Department of Physics and Astronomy University of New Mexico AlbuquerqueNM87106 United States Astrophysics University of Oxford Denys Wilkinson Building Keble Road OxfordOX1 3RH United Kingdom McWilliams Center for Cosmology Department of Physics Carnegie Mellon University 5000 Forbes Ave PittsburghPA15213 United States Institute of Cosmology & Gravitation University of Portsmouth Dennis Sciama Building Burnaby Road PortsmouthPO1 3FX United Kingdom Harvard University Department of Physics CambridgeMA02138 United States Center for Particle Cosmology Department of Physics and Astronomy University of Pennsylvania 209 S. 33rd St. PhiladelphiaPA19104 United States Karlsruhe76128 Germany Department of Physics and Astronomy University of California IrvineCA92697-4575 United States Department of Physics University of California Merced 5200 North Lake Rd. MercedCA95343 United States CCAPP Department of Physics Department of Astronomy The Ohio State University 191 W. Woodruff Ave. ColumbusOH43210 United States Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Drive PasadenaCA91109 United States Department of Physics & Astronomy University of Hawaii Watanabe Hall 2505 Correa Road HonoluluHI96822 United States Center for Astrophysics and Cosmology Science Institute University of Iceland Dunhagi 5 Reykjavik107 Iceland

Self-interacting dark matter (SIDM) arises generically in scenarios for physics beyond the Standard Model that have dark sectors with light mediators or strong dynamics. The self-interactions allow energy and momentum transport through halos, altering their structure and dynamics relative to those produced by collisionless dark matter. SIDM models provide a promising way to explain the diversity of galactic rotation curves, and they form a predictive and versatile framework for interpreting astrophysical phenomena related to dark matter. This review provides a comprehensive explanation of the physical effects of dark matter self-interactions in objects ranging from galactic satellites (dark and luminous) to clusters of galaxies and the large-scale structure. The second major part describes the methods used to constrain SIDM models including current constraints, with the aim of advancing tests with upcoming galaxy surveys. This part also provides a detailed review of the unresolved small-scale structure formation issues and concrete ways to test simple SIDM models. The review is rounded off by a discussion of the theoretical motivation for self-interactions, degeneracies with baryonic and gravitational effects, extensions to the single-component elastic-interactions SIDM framework, and future observational and theoretical prospects. © 2022, CC BY.

关键词： Galaxies

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：