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Journal of physics: Conference Series 2012年第1期402卷

作者： M A Novotny M Guerra H De Raedt K Michielsen F Jin Department of Physics and Astronomy Mississippi State University Mississippi State MS 39762-5167 USA HPC2 Center for Computational Sciences Mississippi State University Mississippi State MS 39762-5167 USA Institute for Advanced Simulation Jülich Supercomputing Centre Forschungszentrum Jülich D-52425 Jülich Germany Department of Sciences & Mathematics Mississippi University for Women 1100 College Street MUW-100 Columbus MS 39701 USA Department of Applied Physics Zernike Institute of Advanced Materials University of Groningen Nijenborgh 4 NL-9747 AG Groningen The Netherlands RWTH Aachen University D-52056 Aachen Germany

An efficient algorithm for the computation of the real-time dependence of a single quantum spin-1/2 coupled to a specific set of quantum spin-1/2 baths is presented. The specific spin baths have couplings only with the spin operators Sx between bath spins and the central spin. We calculate spin expectation values, the quantum purity, the von Neumann entropy, and the off-diagonal components of the reduced density matrix for the central spin once the bath spins have been traced out. The algorithm does not require the storage of any vector larger than of size 2, even though the size of the Hilbert space is 2N+1, where N is the number of bath spins. Results are presented for the central spin connected to different sizes and types of spin baths, and for different initial states for the central spin and for the bath spins. Results are also compared to those for more general baths.

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37. Ice crystal shapes in antifreeze protein solutions

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Cryobiology 2010年第3期61卷 373-373页

作者： Ido Braslavsky Maya Bar Junjie Liu Yangzhong Qin Yeliz Celik Peter L. Davies J.S. Wettlaufer Department of Physics and Astronomy Ohio University Athens 45701 OH USA Faculty of Agriculture Food and Environment The Hebrew University of Jerusalem Rehovot 76100 Israel Department of Structural Biology Weizmann Institute of Science Rehovot 76100 Israel School of Physical Science and Technology Inner Mongolia University Hohhot 010021 China Department of Biochemistry Queen’s University Kingston Ontario K7L 3N6 Canada Department of Geology and Geophysics Yale University New Haven CT 06520 USA Department of Physics Yale University New Haven CT 06520 USA Program in Applied Mathematics Yale University New Haven CT 06520 USA

Cross-correlation of DES Y3 lensing and ACT/Planck thermal Sunyaev Zeld'ovich Effect I: Measurements, systematics tests, and feedback model constraints

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arXiv 2021年

作者： Gatti, Marco Pandey, S. Baxter, E. Hill, J.C. Moser, E. Raveri, M. Fang, X. DeRose, J. Giannini, G. Doux, C. Huang, H. Battaglia, N. Alarcon, A. Amon, A. Becker, M. Campos, A. Chang, C. Chen, R. Choi, A. Eckert, K. Elvin-Poole, J. Everett, S. Ferte, A. Harrison, I. Maccrann, N. McCullough, J. Myles, J. Alsina, A. Navarro Prat, J. Rollins, R.P. Sanchez, C. Shin, T. Troxel, M. Tutusaus, I. Yin, B. Abbott, T. Aguena, M. Allam, S. Andrade-Oliveira, F. Annis, J. Bernstein, G. Bertin, E. Bolliet, B. Bond, J.R. Brooks, D. Burke, D.L. Calabrese, E. Rosell, A. Carnero Kind, M. Carrasco Carretero, J. Cawthon, R. Costanzi, M. Crocce, M. da Costa, L.N. da Silva Pereira, M.E. de Vicente, J. Desai, S. Diehl, H.T. Dietrich, J.P. Doel, P. Dunkley, J. Evrard, A.E. Ferraro, S. Ferrero, I. Flaugher, B. Fosalba, P. Frieman, J. García-Bellido, J. Gaztanaga, E. Gerdes, D.W. Giannantonio, T. Gruen, D. Gruendl, R.A. Gschwend, J. Gutierrez, G. Herner, K. Hincks, A.D. Hinton, S.R. Hollowood, D.L. Honscheid, K. Hughes, J.P. Huterer, D. Jain, B. James, D.J. Krause, E. Kuehn, K. Kuropatkin, N. Lahav, O. Lidman, C. Lima, M. Lokken, M. Madhavacheril, M.S. Maia, M.A.G. Marshall, J.L. McMahon, J.J. Melchior, P. Moodley, K. Mohr, J.J. Morgan, R. Nati, F. Niemack, M.D. Page, L. Palmese, A. Paz-Chinchón, F. Pieres, A. Malagón, A.A. Plazas Rodriguez-Monroy, M. Romer, A.K. Sanchez, E. Scarpine, V. Schaan, E. Secco, L.F. Serrano, S. Sheldon, E. Sherwin, B.D. Sifón, C. Smith, M. Soares-Santos, M. Spergel, D. Suchyta, E. Tarle, G. Thomas, D. To, C. Tucker, D.L. Varga, T.N. Weller, J. Wilkinson, R.D. Wollack, E.J. Xu, Z. Department of Physics and Astronomy University of Pennsylvania PhiladelphiaPA19104 United States Institute for Astronomy University of Hawai'i 2680 Woodlawn Drive HonoluluHI96822 United States Department of Physics Columbia University New YorkNY10027 United States Center for Computational Astrophysics Flatiron Institute New YorkNY10010 United States Department of Astronomy Cornell University IthacaNY14853 United States Department of Astronomy/Steward Observatory University of Arizona 933 North Cherry Avenue TucsonAZ85721-0065 United States Lawrence Berkeley National Laboratory 1 Cyclotron Road BerkeleyCA94720 United States The Barcelona Institute of Science and Technology Campus UAB Bellaterra Barcelona08193 Spain Department of Physics University of Arizona TucsonAZ85721 United States Argonne National Laboratory 9700 South Cass Avenue LemontIL60439 United States Kavli Institute for Particle Astrophysics & Cosmology Stanford University P. O. Box 2450 StanfordCA94305 United States Department of Physics Carnegie Mellon University PittsburghPA15312 United States Department of Astronomy and Astrophysics University of Chicago ChicagoIL60637 United States Kavli Institute for Cosmological Physics University of Chicago ChicagoIL60637 United States Department of Physics Duke University DurhamNC27708 United States Center for Cosmology and Astro-Particle Physics The Ohio State University ColumbusOH43210 United States Department of Physics The Ohio State University ColumbusOH43210 United States Santa Cruz Institute for Particle Physics Santa CruzCA95064 United States Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Dr. PasadenaCA91109 United States Department of Physics University of Oxford Denys Wilkinson Building Keble Road OxfordOX1 3RH United Kingdom Jodrell Bank Center for Astrophysics School of Physics and Astronomy University of Manchester Oxford Road ManchesterM13 9PL United Kingdo

We present a tomographic measurement of the cross-correlation between thermal Sunyaev-Zeldovich (tSZ) maps from Planck and the Atacama Cosmology Telescope (ACT) and weak galaxy lensing shears measured during the first three years of observations of the Dark Energy Survey (DES Y3). This correlation is sensitive to the thermal energy in baryons over a wide redshift range, and is therefore a powerful probe of astrophysical feedback. We detect the correlation at a statistical significance of 21σ, the highest significance to date. We examine the tSZ maps for potential contaminants, including cosmic infrared background (CIB) and radio sources, finding that CIB has a substantial impact on our measurements and must be taken into account in our analysis. We use the cross-correlation measurements to test different feedback models. In particular, we model the tSZ using several different pressure profile models calibrated against hydrodynamical simulations. Our analysis marginalises over redshift uncertainties, shear calibration biases, and intrinsic alignment effects. We also marginalise over Ωm and σ8 using Planck or DES priors. We find that the data prefers the model with a low amplitude of the pressure profile at small scales, compatible with a scenario with strong AGN feedback and ejection of gas from the inner part of the halos. When using a more flexible model for the shear profile, constraints are weaker, and the data cannot discriminate between different baryonic prescriptions. Copyright © 2021, The Authors. All rights reserved.

关键词： Radio astronomy

Identified charged-hadron production in p+Al, He3+Au, and Cu+Au collisions at sNN=200GeV and in U+U collisions at sNN=193GeV

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Physical Review C 2024年第5期109卷 054910-054910页

作者： N. J. Abdulameer U. Acharya A. Adare C. Aidala N. N. Ajitanand Y. Akiba R. Akimoto J. Alexander M. Alfred V. Andrieux K. Aoki N. Apadula H. Asano E. T. Atomssa T. C. Awes B. Azmoun V. Babintsev M. Bai X. Bai N. S. Bandara B. Bannier K. N. Barish S. Bathe V. Baublis C. Baumann S. Baumgart A. Bazilevsky M. Beaumier S. Beckman R. Belmont A. Berdnikov Y. Berdnikov L. Bichon D. Black B. Blankenship D. S. Blau J. S. Bok V. Borisov K. Boyle M. L. Brooks J. Bryslawskyj H. Buesching V. Bumazhnov S. Butsyk S. Campbell V. Canoa Roman R. Cervantes C.-H. Chen D. Chen M. Chiu C. Y. Chi I. J. Choi J. B. Choi S. Choi P. Christiansen T. Chujo V. Cianciolo Z. Citron B. A. Cole M. Connors R. Corliss Y. Corrales Morales N. Cronin N. Crossette M. Csanád T. Csörgő L. D'Orazio T. W. Danley A. Datta M. S. Daugherity G. David C. T. Dean K. DeBlasio K. Dehmelt A. Denisov A. Deshpande E. J. Desmond L. Ding A. Dion P. B. Diss D. Dixit V. Doomra J. H. Do O. Drapier A. Drees K. A. Drees J. M. Durham A. Durum H. En'yo T. Engelmore A. Enokizono R. Esha K. O. Eyser B. Fadem W. Fan N. Feege D. E. Fields M. Finger, Jr. M. Finger D. Firak D. Fitzgerald F. Fleuret S. L. Fokin J. E. Frantz A. Franz A. D. Frawley Y. Fukao Y. Fukuda T. Fusayasu K. Gainey P. Gallus C. Gal P. Garg A. Garishvili I. Garishvili H. Ge M. Giles F. Giordano A. Glenn X. Gong M. Gonin Y. Goto R. Granier de Cassagnac N. Grau S. V. Greene M. Grosse Perdekamp Y. Gu T. Gunji T. Guo H. Guragain T. Hachiya J. S. Haggerty K. I. Hahn H. Hamagaki H. F. Hamilton J. Hanks S. Y. Han M. Harvey S. Hasegawa T. O. S. Haseler K. Hashimoto R. Hayano T. K. Hemmick T. Hester X. He J. C. Hill K. Hill A. Hodges R. S. Hollis K. Homma B. Hong T. Hoshino N. Hotvedt J. Huang T. Ichihara Y. Ikeda K. Imai Y. Imazu M. Inaba A. Iordanova D. Isenhower A. Isinhue D. Ivanishchev B. V. Jacak S. J. Jeon M. Jezghani X. Jiang Z. Ji B. M. Johnson K. S. Joo D. Jouan D. S. Jumper J. Kamin S. Kanda B. H. Kang J. H. Kang J. S. Kang D. Kapukchyan J. Kapustinsky S. Karthas D. Kawall A. V. Kazantsev J. A. Key V. Khachatrya Debrecen University H-4010 Debrecen Egyetem tér 1 Hungary Georgia State University Atlanta Georgia 30303 USA University of Colorado Boulder Colorado 80309 USA Los Alamos National Laboratory Los Alamos New Mexico 87545 USA Department of Physics University of Michigan Ann Arbor Michigan 48109 USA Chemistry Department State University of New York at Stony Brook Stony Brook New York 11794 USA RIKEN Nishina Center for Accelerator-Based Science Wako Saitama 351-0198 Japan RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973 USA Center for Nuclear Study Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo Tokyo 113-0033 Japan Department of Physics and Astronomy Howard University Washington DC 20059 USA KEK High Energy Accelerator Research Organization Tsukuba Ibaraki 305-0801 Japan Iowa State University Ames Iowa 50011 USA Department of Physics and Astronomy State University of New York at Stony Brook Stony Brook New York 11794 USA Kyoto University Kyoto 606-8502 Japan Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA Physics Department Brookhaven National Laboratory Upton New York 11973 USA IHEP Protvino State Research Center of Russian Federation Institute for High Energy Physics Protvino 142281 Russia Collider-Accelerator Department Brookhaven National Laboratory Upton New York 11973 USA Science and Technology on Nuclear Data Laboratory China Institute of Atomic Energy Beijing 102413 People's Republic of China Department of Physics University of Massachusetts Amherst Massachusetts 01003 USA University of California-Riverside Riverside California 92521 USA Baruch College City University of New York New York New York 10010 USA Petersburg Nuclear Physics Institute Gatchina Leningrad Region 188300 Russia Physics and Astronomy Department University of North Carolina at Greensboro Greensboro North Carolina 27412 USA Vanderbilt University Nashville Tennessee 37235 USA Saint Petersburg Stat

The PHENIX experiment has performed a systematic study of identified charged-hadron (π±, K±, p, p¯) production at midrapidity in p+Al, He3+Au, and Cu+Au collisions at sNN=200GeV and U+U collisions at sNN=193GeV. Identified charged-hadron invariant transverse-momentum (pT) and transverse-mass (mT) spectra are presented and interpreted in terms of radially expanding thermalized systems. The particle ratios of K/π and p/π have been measured in different centrality ranges of large (Cu+Au and U+U) and small (p+Al and He3+Au) collision systems. The values of K/π ratios measured in all considered collision systems were found to be consistent with those measured in p+p collisions. However, the values of p/π ratios measured in large collision systems reach the values of ≈0.6, which is a factor of ≈2 larger than in p+p collisions. These results can be qualitatively understood in terms of the baryon enhancement expected from hadronization by recombination. Identified charged-hadron nuclear-modification factors (RAB) are also presented. Enhancement of proton RAB values over meson RAB values was observed in central He3+Au, Cu+Au, and U+U collisions. The proton RAB values measured in the p+Al collision system were found to be consistent with RAB values of ϕ, π±, K±, and π0 mesons, which may indicate that the size of the system produced in p+Al collisions is too small for recombination to cause a noticeable increase in proton production.

关键词： Hadron production Relativistic heavy-ion collisions Hadrons Kaons Pions Protons

The Black Hole Explorer: Motivation and Vision

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arXiv 2024年

作者： Johnson, Michael D. Akiyama, Kazunori Baturin, Rebecca Bilyeu, Bryan Blackburn, Lindy Boroson, Don Cárdenas-Avendaño, Alejandro Chael, Andrew Chan, Chi-Kwan Chang, Dominic Cheimets, Peter Chou, Cathy Doeleman, Sheperd S. Farah, Joseph Galison, Peter Gamble, Ronald Gammie, Charles F. Gelles, Zachary Gómez, José L. Gralla, Samuel E. Grimes, Paul Gurvits, Leonid I. Hadar, Shahar Haworth, Kari Hada, Kazuhiro Hecht, Michael H. Honma, Mareki Houston, Janice Hudson, Ben Issaoun, Sara Jia, He Jorstad, Svetlana Kauffmann, Jens Kovalev, Yuri Y. Kurczynski, Peter Lafon, Robert Lupsasca, Alexandru Lehmensiek, Robert Ma, Chung-Pei Marrone, Daniel P. Marscher, Alan P. Melnick, Gary J. Narayan, Ramesh Niinuma, Kotaro Noble, Scott C. Palmer, Eric J. Palumbo, Daniel C.M. Paritsky, Lenny Peretz, Eliad Pesce, Dominic Plavin, Alexander Quataert, Eliot Rana, Hannah Ricarte, Angelo Roelofs, Freek Shtyrkova, Katia Sinclair, Laura C. Small, Jeffrey Kumara, Sridharan Tirupati Srinivasan, Ranjani Strominger, Andrew Tiede, Paul Tong, Edward Wang, Jade Weintroub, Jonathan Wielgus, Maciek Wong, George Zhang, Xinyue Alice Center for Astrophysics | Harvard & Smithsonian 60 Garden Street CambridgeMA02138 United States Black Hole Initiative Harvard University 20 Garden Street CambridgeMA02138 United States Haystack Observatory Massachusetts Institute of Technology WestfordMA01886 United States Mizusawa VLBI Observatory National Astronomical Observatory of Japan Iwate023-0861 Japan MIT Lincoln Laboratory LexingtonMA02421 United States Princeton Gravity Initiative Princeton University PrincetonNJ08544 United States Steward Observatory and Department of Astronomy University of Arizona 933 N. Cherry Ave. TucsonAZ85721 United States Data Science Institute University of Arizona 1230 N. Cherry Ave. TucsonAZ85721 United States Program in Applied Mathematics University of Arizona 617 N. Santa Rita TucsonAZ85721 United States Las Cumbres Observatory 6740 Cortona Drive GoletaCA93117-5575 United States Department of Physics University of California Santa BarbaraCA93106-9530 United States Department of History of Science Harvard University CambridgeMA02138 United States Department of Physics Harvard University CambridgeMA02138 United States NASA Goddard Space Flight Center GreenbeltMD20771 United States Departments of Astronomy and of Physics University of Illinois UrbanaIL61801 United States Instituto de Astrofísica de Andalucía CSIC Glorieta de la Astronomía s/n GranadaE-18008 Spain Department of Physics University of Arizona TucsonAZ85719 United States Joint Institute for VLBI ERIC Dwingeloo7991PD Netherlands Faculty of Aerospace Engineering Delft University of Technology Delft2629 HS Netherlands Department of Mathematics and Physics University of Haifa at Oranim Kiryat Tivon3600600 Israel Haifa Research Center for Theoretical Physics and Astrophysics University of Haifa Haifa3498838 Israel 2-21-1 Osawa Mitaka Tokyo181-8588 Japan Department of Astronomy Graduate School of Science The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo113-

We present the Black Hole Explorer (BHEX), a mission that will produce the sharpest images in the history of astronomy by extending submillimeter Very-Long-Baseline Interferometry (VLBI) to space. BHEX will discover and measure the bright and narrow "photon ring" that is predicted to exist in images of black holes, produced from light that has orbited the black hole before escaping. This discovery will expose universal features of a black hole's spacetime that are distinct from the complex astrophysics of the emitting plasma, allowing the first direct measurements of a supermassive black hole's spin. In addition to studying the properties of the nearby supermassive black holes M87*and Sgr A*, BHEX will measure the properties of dozens of additional supermassive black holes, providing crucial insights into the processes that drive their creation and growth. BHEX will also connect these supermassive black holes to their relativistic jets, elucidating the power source for the brightest and most efficient engines in the universe. BHEX will address fundamental open questions in the physics and astrophysics of black holes that cannot be answered without submillimeter space VLBI. The mission is enabled by recent technological breakthroughs, including the development of ultra-high-speed downlink using laser communications, and it leverages billions of dollars of existing ground infrastructure. We present the motivation for BHEX, its science goals and associated requirements, and the pathway to launch within the next decade. © 2024, CC BY.

关键词： Photons

SPT-SZ MCMF: An extension of the SPT-SZ catalog over the DES region

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arXiv 2023年

作者： Klein, M. Mohr, J.J. Bocquet, S. Aguena, M. Allen, S.W. Alves, O. Ansarinejad, B. Ashby, M.L.N. Bacon, D. Bayliss, M. Benson, B.A. Bleem, L.E. Brodwin, M. Brooks, D. Bulbul, E. Burke, D.L. Canning, R.E.A. Carlstrom, J.E. Rosell, A. Carnero Carretero, J. Chang, C.L. Conselice, C. Costanzi, M. Crites, A.T. da Costa, L.N. Pereira, M.E.S. Davis, T.M. De Vicente, J. Desai, S. de Haan, T. Dobbs, M.A. Doel, P. Ferrero, I. Flores, A.M. Frieman, J. George, E.M. Giannini, G. Gladders, M.D. Gonzalez, A.H. Grandis, S. Gruen, D. Gruendl, R.A. Gutierrez, G. Halverson, N.W. Hinton, S.R. Holder, G.P. Hollowood, D.L. Holzapfel, W.L. Honscheid, K. Hrubes, J.D. Huang, N. James, D.J. Khullar, G. Kim, K. Knox, L. Kraft, R. Kéruzoré, F. Lee, A.T. Luong-Van, D. Mahler, G. Mantz, A. Marrone, D.P. Marshall, J.L. McDonald, M. McMahon, J.J. Mena-Fernández, J. Menanteau, F. Meyer, S.S. Miquel, R. Myles, J. Padin, S. Pieres, A. Malagón, A.A. Plazas Pryke, C. Reichardt, C.L. Reil, K. Roberson, J. Romer, A.K. Romero, C. Ruhl, J.E. Saliwanchik, B.R. Salvati, L. Sanchez, E. Saro, A. Schaffer, K.K. Schrabback, T. Schubnell, M. Sevilla-Noarbe, I. Sharon, K. Shirokoff, E. Smith, M. Somboonpanyakul, T. Stalder, B. Stanford, S.A. Stark, A.A. Strazzullo, V. Suchyta, E. Swanson, M.E.C. Tarle, G. To, C. Vanderlinde, K. Vieira, J.D. von der Linden, A. Weaverdyck, N. Williamson, R. Wiseman, P. Young, M. University Observatory Faculty of Physics Ludwig-Maximilians-Universität Scheinerstr. 1 Munich81679 Germany Max Planck Institute for Extraterrestrial Physics Giessenbachstrasse Garching85748 Germany Laboratório Interinstitucional de e-Astronomia - LIneA Rua Gal. José Cristino 77 RJ Rio de Janeiro20921-400 Brazil Kavli Institute for Particle Astrophysics and Cosmology Stanford University 452 Lomita Mall StanfordCA94305 United States Department of Physics Stanford University 382 Via Pueblo Mall StanfordCA94305 United States SLAC National Accelerator Laboratory 2575 Sand Hill Road Menlo ParkCA94025 United States Department of Physics University of Michigan Ann ArborMI48109 United States School of Physics University of Melbourne ParkvilleVIC3010 Australia Center for Astrophysics Harvard & Smithsonian CambridgeMA02138 United States Institute of Cosmology and Gravitation University of Portsmouth PortsmouthPO1 3FX United Kingdom Kavli Institute for Astrophysics and Space Research Massachusetts Institute of Technology 77 Massachusetts Avenue CambridgeMA02139 United States Department of Physics University of Cincinnati CincinnatiOH45221 United States Department of Astronomy and Astrophysics University of Chicago ChicagoIL60637 United States Kavli Institute for Cosmological Physics University of Chicago ChicagoIL60637 United States Fermi National Accelerator Laboratory BataviaIL60510-0500 United States HEP Division Argonne National Laboratory ArgonneIL60439 United States Department of Physics and Astronomy University of Missouri 5110 Rockhill Road Kansas CityMO64110 United States Department of Physics & Astronomy University College London Gower Street LondonWC1E 6BT United Kingdom Max Planck Institute for Extraterrestrial Physics Giessenbachstr. 1 Garching85748 Germany Kavli Institute for Particle Astrophysics & Cosmology Stanford University P. O. Box 2450 StanfordCA94305 United States SLAC National Accelerator Laboratory

We present an extension to a Sunyaev-Zel’dovich Effect (SZE) selected cluster catalog based on observations from the South Pole Telescope (SPT);this catalog extends to lower signal-to-noise than the previous SPT-SZ catalog and therefore includes lower mass clusters. Optically derived redshifts, centers, richnesses and morphological parameters together with catalog contamination and completeness statistics are extracted using the multi-component matched filter algorithm (MCMF) applied to the S/N>4 SPT-SZ candidate list and the Dark Energy Survey (DES) photometric galaxy catalog. The main catalog contains 811 sources above S/N=4, has 91% purity and is 95% complete with respect to the original SZE selection. It contains 50% more total clusters and twice as many clusters above z = 0.8 in comparison to the original SPT-SZ sample. The MCMF algorithm allows us to define subsamples of the desired purity with traceable impact on catalog completeness. As an example, we provide two subsamples with S/N>4.25 and S/N>4.5 for which the sample contamination and cleaning-induced incompleteness are both as low as the expected Poisson noise for samples of their size. The subsample with S/N>4.5 has 98% purity and 96% completeness, and will be included in a combined SPT cluster and DES weak-lensing cosmological analysis. We measure the number of false detections in the SPT-SZ candidate list as function of S/N, finding that it follows that expected from assuming Gaussian noise, but with a lower amplitude compared to previous estimates from simulations. Copyright © 2023, The Authors. All rights reserved.

关键词： Galaxies

Correction to: Air change rate effects on the airborne diseases spreading in Underground Metro wagons

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Environmental science and pollution research international 2021年第24期28卷 31908页

作者： Mostafa El-Salamony Ahmed Moharam Amr Guaily Mohammed A Boraey Aerospace Department College of Engineering Peking University Beijing 100871 China. elsalamony.mostafa@***. Smart Engineering Systems Research Center (SESC) Nile University Sheikh Zayed City 12588 Egypt. Department of Engineering Mathematics and Physics Faculty of Engineering Cairo University Giza 12613 Egypt. Mechanical Engineering Program School of Engineering and Applied Sciences Nile University Sheikh Zayed City 12588 Egypt. Mechanical Power Engineering Department Zagazig University Zagazig 44519 Egypt.

A Correction to this paper has been published: https://***/10.1007/s11356-021-13405-8

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The Extended [CII] under Construction? Observation of the brightest high-z lensed star-forming galaxy at z = 6.2

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arXiv 2023年

作者： Fudamoto, Yoshinobu Inoue, Akio K. Coe, Dan Welch, Brian Acebron, Ana Ricotti, Massimo Mandelker, Nir Windhorst, Rogier A. Xu, Xinfeng Sugahara, Yuma Bauer, Franz E. Bradač, Maruša Bradley, Larry D. Diego, Jose M. Florian, Michael Frye, Brenda Fujimoto, Seiji Hashimoto, Takuya Henry, Alaina Mahler, Guillaume Oesch, Pascal A. Ravindranath, Swara Rigby, Jane Sharon, Keren Strait, Victoria Tamura, Yoichi Trenti, Michele Vanzella, Eros Zackrisson, Erik Zitrin, Adi Waseda Research Institute for Science and Engineering Faculty of Science and Engineering Waseda University 3-4-1 Okubo Shinjuku Tokyo169-8555 Japan National Astronomical Observatory of Japan 2-21-1 Osawa Mitaka Tokyo Japan Department of Physics School of Advanced Science and Engineering Faculty of Science and Engineering Waseda University 3-4-1 Okubo Shinjuku Tokyo169-8555 Japan 3700 San Martin Drive BaltimoreMD21218 United States STScI BaltimoreMD United States Center for Astrophysical Sciences Department of Physics and Astronomy The Johns Hopkins University 3400 N Charles St. BaltimoreMD21218 United States Department of Astronomy University of Maryland College ParkMD20742 United States Observational Cosmology Lab NASA Goddard Space Flight Center GreenbeltMD20771 United States Center for Research and Exploration in Space Science and Technology NASA/GSFC GreenbeltMD20771 United States Dipartimento di Fisica Università degli Studi di Milano Via Celoria 16 MilanoI-20133 Italy INAF - IASF Milano via A. Corti 12 MilanoI-20133 Italy Department of Astronomy University of Maryland College Park20742 United States Centre for Astrophysics and Planetary Science Racah Institute of Physics The Hebrew University Jerusalem91904 Israel School of Earth and Space Exploration Arizona State University TempeAZ85287-1404 United States Center for Astrophysical Sciences Department of Physics & Astronomy Johns Hopkins University BaltimoreMD21218 United States Instituto de Astrofísica Facultad de Física Pontificia Universidad Católica de Chile Campus San Joaquín Av. Vicuña Mackenna 4860 Macul Santiago7820436 Chile Centro de Astroingeniería Facultad de Física Pontificia Universidad Católica de Chile Campus San Joaquín Av. Vicuña Mackenna 4860 Macul Santiago7820436 Chile Millennium Institute of Astrophysics Nuncio Monseñor Sótero Sanz 100 Of 104 Providencia Santiago Chile University of Ljubljana Department of Mathematics and Physics Jad

We present results of [C ii] 158 µm emission line observations, and report the spectroscopic redshift confirmation of a strongly lensed (µ ∼ 20) star-forming galaxy, MACS0308-zD1 at z = 6.2078 ±0.0002. The [C ii] emission line is detected with a signal-to-noise ratio > 6 within the rest-frame UV bright clump of the lensed galaxy (zD1.1) and exhibits multiple velocity components;the narrow [C ii] has a velocity full-width-half-maximum (FWHM) of 110 ± 20 km/s, while broader [C ii] is seen with an FWHM of 230 ± 20 km/s. The broader [C ii] component is blueshifted (−80 ± 20 km/s) with respect to the narrow [C ii] component, and has a morphology which extends beyond the UV-bright clump. We find that while the narrow [C ii] emission is most likely associated with zD1.1, the broader component is possibly associated with outflowing gas. Based on the non-detection of λ158 µm dust continuum, we find that MACS0308-zD1’s star-formation activity occurs in a dust-free environment with the stringent upper limit of infrared luminosity . 9 × 108 L•. Targeting this strongly lensed faint galaxy for followup ALMA and JWST observations will be crucial to characterize the details of typical galaxy growth in the early Universe. © 2023, CC BY.

关键词： Galaxies

Weak lensing combined with the kinetic Sunyaev Zel'dovich effect: A study of baryonic feedback

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arXiv 2024年

作者： Bigwood, L. Amon, A. Schneider, A. Salcido, J. McCarthy, I.G. Preston, C. Sanchez, D. Sijacki, D. Schaan, E. Ferraro, S. Battaglia, N. Chen, A. Dodelson, S. Roodman, A. Pieres, A. Ferté, A. Alarcon, A. Drlica-Wagner, A. Choi, A. Navarro-Alsina, A. Campos, A. Ross, A.J. Carnero Rosell, A. Yin, B. Yanny, B. Sánchez, C. Chang, C. Davis, C. Doux, C. Gruen, D. Rykoff, E.S. Huff, E.M. Sheldon, E. Tarsitano, F. Andrade-Oliveira, F. Bernstein, G.M. Giannini, G. Diehl, H.T. Huang, H. Harrison, I. Sevilla-Noarbe, I. Tutusaus, I. Elvin-Poole, J. McCullough, J. Zuntz, J. Blazek, J. DeRose, J. Cordero, J. Prat, J. Myles, J. Eckert, K. Bechtol, K. Herner, K. Secco, L.F. Gatti, M. Raveri, M. Carrasco Kind, M. Becker, M.R. Troxel, M.A. Jarvis, M. MacCrann, N. Friedrich, O. Alves, O. Leget, P.-F. Chen, R. Rollins, R.P. Wechsler, R.H. Gruendl, R.A. Cawthon, R. Allam, S. Bridle, S.L. Pandey, S. Everett, S. Shin, T. Hartley, W.G. Fang, X. Zhang, Y. Aguena, M. Annis, J. Bacon, D. Bertin, E. Bocquet, S. Brooks, D. Carretero, J. Castander, F.J. da Costa, L.N. Pereira, M.E.S. De Vicente, J. Desai, S. Doel, P. Ferrero, I. Flaugher, B. Frieman, J. García-Bellido, J. Gaztanaga, E. Gutierrez, G. Hinton, S.R. Hollowood, D.L. Honscheid, K. Huterer, D. James, D.J. Kuehn, K. Lahav, O. Lee, S. Marshall, J.L. Mena-Fernández, J. Miquel, R. Muir, J. Paterno, M. Plazas Malagón, A.A. Porredon, A. Romer, A.K. Samuroff, S. Sanchez, E. Sanchez Cid, D. Smith, M. Soares-Santos, M. Suchyta, E. Swanson, M.E.C. Tarle, G. To, C. Weaverdyck, N. Weller, J. Wiseman, P. Yamamoto, M. Institute of Astronomy University of Cambridge Madingley Road CambridgeCB3 0HA United Kingdom Kavli Institute for Cosmology Cambridge Madingley Road CambridgeCB3 OHA United Kingdom Department of Astrophysical Sciences Princeton University Peyton Hall PrincetonNJ08544 United States Institute for Computational Science University of Zurich Winterthurerstrasse 190 ZurichCH-8057 Switzerland Astrophysics Research Institute Liverpool John Moores University 146 Brownlow Hill LiverpoolL3 5RF United Kingdom Centre for Energy Environmental and Technological Research Av. Complutense 40 Moncloa - Aravaca Madrid28040 Spain Kavli Institute for Particle Astrophysics and Cosmology 382 Via Pueblo Mall StanfordCA94305-4060 United States SLAC National Accelerator Laboratory 2575 Sand Hill Road Menlo ParkCA94025 United States Physics Division Lawrence Berkeley National Laboratory BerkeleyCA94720 United States Berkeley Center for Cosmological Physics Department of Physics University of California BerkeleyCA94720 United States Department of Astronomy Cornell University IthacaNY14853 United States Department of Physics University of Michigan Ann ArborMI48109 United States UTIAS The University of Tokyo Chiba Kashiwa277-8583 Japan Department of Physics Carnegie Mellon University PittsburghPA15312 United States NSF AI Planning Institute for Physics of the Future Carnegie Mellon University PittsburghPA15213 United States Kavli Institute for Particle Astrophysics & Cosmology Stanford University P. O. Box 2450 StanfordCA94305 United States SLAC National Accelerator Laboratory Menlo ParkCA94025 United States Laboratório Interinstitucional de e-Astronomia - LIneA Rua Gal. José Cristino 77 RJ Rio de Janeiro20921-400 Brazil Observatório Nacional Rua Gal. José Cristino 77 RJ Rio de Janeiro20921-400 Brazil Argonne National Laboratory 9700 South Cass Avenue LemontIL60439 United States Campus UAB Carrer de Can Magrans s/n Barcelona08193 Spa

Extracting precise cosmology from weak lensing surveys requires modelling the non-linear matter power spectrum, which is suppressed at small scales due to baryonic feedback processes. However, hydrodynamical galaxy formation simulations make widely varying predictions for the amplitude and extent of this effect. We use measurements of Dark Energy Survey Year 3 weak lensing (WL) and Atacama Cosmology Telescope DR5 kinematic Sunyaev-Zel'dovich (kSZ) to jointly constrain cosmological and astrophysical baryonic feedback parameters using a flexible analytical model, 'baryonification'. First, using WL only, we compare the S8 constraints using baryonification to a simulation-calibrated halo model, a simulation-based emulator model and the approach of discarding WL measurements on small angular scales. We find that model flexibility can shift the value of S8 and degrade the uncertainty. The kSZ provides additional constraints on the astrophysical parameters and shifts (Equation presented) a higher value than attained using the WL-only analysis. We measure the suppression of the non-linear matter power spectrum using WL + kSZ and constrain a mean feedback scenario that is more extreme than the predictions from most hydrodynamical simulations. We constrain the baryon fractions and the gas mass fractions and find them to be generally lower than inferred from X-ray observations and simulation predictions. We conclude that the WL + kSZ measurements provide a new and complementary benchmark for building a coherent picture of the impact of gas around galaxies across observations. © 2024, CC BY.

关键词： Cosmology

The FRET-based structural dynamics challenge - community contributions to consistent and open science practices

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arXiv 2020年

作者： Lerner, Eitan Ambrose, Benjamin Barth, Anders Birkedal, Victoria Blanchard, Scott C. Börner, Richard Cordes, Thorben Craggs, Timothy D. Ha, Taekjip Haran, Gilad Hugel, Thorsten Ingargiola, Antonino Kapanidis, Achillefs Lamb, Don C. Laurence, Ted ki Lee, Nam Lemke, Edward A. Margeat, Emmanuel Michaelis, Jens Michalet, Xavier Nettels, Daniel Peulen, Thomas-Otavio Schuler, Benjamin Seidel, Claus A.M. Soleimaninejad, Hamid Weiss, Shimon Department of Biological Chemistry Alexander Silberman Institute of Life Sciences Faculty of Mathematics & Science Edmond J. Safra Campus Hebrew University of Jerusalem Jerusalem9190401 Israel Center for Nanoscience and Nanotechnology Hebrew University of Jerusalem Jerusalem9190401 Israel Department of Chemistry University of Sheffield Sheffield United Kingdom Lehrstuhl für Molekulare Physikalische Chemie Heinrich-Heine-Universität Düsseldorf Germany Department of Chemistry and iNANO center Aarhus University Aarhus8000 Denmark Department of Structural Biology St. Jude Children's Research Hospital MemphisTN United States Laserinstitut HS Mittweida University of Applied Science Mittweida Mittweida09648 Germany Physical and Synthetic Biology Faculty of Biology Ludwig-Maximilians-Universität München Planegg-Martinsried Germany Department of Biophysics and Biophysical Chemistry Johns Hopkins University School of Medicine BaltimoreMD21205 United States Department of Biophysics and Biophysical Chemistry Johns Hopkins University School of Medicine BaltimoreMD21205 United States Department of Biomedical Engineering Johns Hopkins University BaltimoreMD21205 United States Howard Hughes Medical Institute BaltimoreMD21205 United States Department of Chemical and Biological Physics Weizmann Institute of Science POB 26 Rehovot7610001 Israel Institute of Physical Chemistry and Signalling Research Centres BIOSS and CIBSS University of Freiburg Albertstraße 23a FreiburgD-79104 Germany Department of Chemistry and Biochemistry Department of Physiology University of California Los Angeles United States Biological Physics Research Group Clarendon Laboratory Department of Physics University of Oxford Oxford United Kingdom Ludwig-Maximilians-Universität München81377 Germany Physical and Life Sciences Directorate Lawrence Livermore National Laboratory LivermoreCA United States School of Chemistry Seoul National University Seoul Korea Republic of Departmen

Single-molecule Förster resonance energy transfer (smFRET) has become a mainstream technique for probing biomolecular structural dynamics. The rapid and wide adoption of the technique by an ever-increasing number of groups has generated many improvements and variations in the technique itself, in methods for sample preparation and characterization, in analysis of the data from such experiments, and in analysis codes and algorithms. Recently, several labs that employ smFRET have joined forces to try to bring the smFRET community together in adopting a consensus on how to perform experiments and analyze results for achieving quantitative structural information. These recent efforts include multi-lab blind-tests to assess the accuracy and precision of smFRET between different labs using different procedures, the formal assembly of the FRET community and development of smFRET procedures to be considered for entries in the wwPDB. Here we delve into the different approaches and viewpoints in the field. This position paper describes the current "state-of-the field", points to unresolved methodological issues for quantitative structural studies, provides a set of ‘soft recommendations’ about which an emerging consensus exists, and a list of resources that are openly available. To make further progress, we strongly encourage ‘open science’ practices. We hope that this position paper will provide a roadmap for newcomers to the field, as well as a reference for seasoned practitioners. Copyright © 2020, The Authors. All rights reserved.

关键词： Forster resonance energy transfer