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RebeLS-25: Discovery of a dynamically cold disc galaxy at z = 7.31

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arXiv 2024年

作者： Rowland, Lucie e. Hodge, Jacqueline bouwens, Rychard Piña, Pavel Mancera Hygate, Alexander Algera, Hiddo Aravena, Manuel bowler, Rebecca da Cunha, elisabete Dayal, Pratika Ferrara, Andrea Herard-Demanche, Thomas Inami, Hanae van Leeuwen, Ivana de Looze, Ilse Oesch, Pascal Pallottini, Andrea Phillips, Siân Rybak, Matus Schouws, Sander Smit, Renske Sommovigo, Laura Stefanon, Mauro van der Werf, Paul Leiden Observatory Leiden University P.O. Box 9513 Leiden2300 RA Netherlands Hiroshima Astrophysical Science Center Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima Hiroshima739-8526 Japan National Astronomical Observatory of Japan 2-21-1 Osawa Mitaka Tokyo Japan Núcleo de Astronomía Facultad de Ingeniería y Ciencias Universidad Diego Portales Av. Ejército Libertador 441 Santiago Chile Jodrell Bank Centre for Astrophysics Department of Physics and Astronomy School of Natural Sciences The University of Manchester ManchesterM13 9PL United Kingdom International Centre for Radio Astronomy Research University of Western Australia 35 Stirling Hwy CrawleyWA6009 Australia Australia Kapteyn Astronomical Institute University of Groningen Groningen9700 AV Netherlands Scuola Normale Superiore Piazza dei Cavalieri 7 Pisa56126 Italy Sterrenkundig Observatorium Ghent University Krijgslaan281-S9 GhentB-9000 Belgium Department of Astronomy University of Geneva Chemin Pegasi 51 Versoix1290 Switzerland Copenhagen Denmark Astrophysics Research Institute Liverpool John Moores University 146 Brownlow Hill LiverpoolL3 5RF United Kingdom Faculty of Electrical Engineering Mathematics and Computer Science Delft University of Technology Mekelweg 4 Delft2628 CD Netherlands SRON - Netherlands Institute for Space Research Niels Bohrweg 4 CA Leiden2333 Netherlands Center for Computational Astrophysics Flatiron Institute 162 5th Avenue New YorkNY10010 United States Departament d’Astronomia i Astrofísica Universitat de València C. Dr. Moliner 50 Burjassot ValènciaE-46100 Spain Unidad Asociada CSIC "Grupo de Astrofísica Extragaláctica y Cosmología" Instituto de Física de Cantabria Universitat de València Spain

We present high resolution (∼ 0.14" = 710 pc) ALMA [CII] 158μm and dust continuum follow-up ob.ervations of RebeLS-25, a [CII]-luminous (L[CII] = (1.7 ± 0.2) × 109L☉) galaxy at redshift z = 7.3065 ± 0.0001. These high resolution, high signal-to-noise ob.ervations allow us to study the sub-kpc morphology and kinematics of this massive (M∗ = 8+−42 × 109M☉) star-forming (SFRUV+IR = 199+−10163 M☉yr−1) galaxy in the epoch of Reionisation. by modelling the kinematics with 3DbAROLO, we find it has a low velocity dispersion (σ¯ = 33 ± 9 km s−1) and a high ratio of ordered-to-random motion (Vrot, max/σ¯ = 11+−84), indicating that RebeLS-25 is a dynamically cold disc. Additionally, we find that the [CII] distribution is well fit by a near-exponential disc model, with a Sérsic index, n, of 1.3 ± 0.2, and we see tentative evidence of more complex non-axisymmetric structures suggestive of a bar in the [CII] and dust continuum emission. by comparing to other high spatial resolution cold gas kinematic studies, we find that dynamically cold discs seem to be more common in the high redshift Universe than expected based on prevailing galaxy formation theories, which typically predict more turbulent and dispersion-dominated galaxies in the early Universe as an outcome of merger activity, gas accretion and more intense feedback. This higher degree of rotational support seems instead to be consistent with recent cosmological simulations that have highlighted the contrast between cold and warm ionised gas tracers, particularly for massive galaxies. We therefore show that dynamically settled disc galaxies can form as early as 700 Myr after the big bang. Copyright © 2024, The Authors. All rights reserved.

关键词： Galaxies

OPTIMADe, an API for exchanging materials data

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arXiv 2021年

作者： Andersen, Casper W. Armiento, Rickard blokhin, evgeny Conduit, Gareth J. Dwaraknath, Shyam evans, Matthew L. Fekete, Ádám Gopakumar, Abhijith Gražulis, Saulius Merkys, Andrius Mohamed, Fawzi Oses, Corey Pizzi, Giovanni Rignanese, Gian-Marco Scheidgen, Markus Talirz, Leopold Toher, Cormac Winston, Donald Aversa, Rossella Choudhary, Kamal Colinet, Pauline Curtarolo, Stefano Di Stefano, Davide Draxl, Claudia er, Suleyman esters, Marco Fornari, Marco Giantomassi, Matteo Govoni, Marco Hautier, Geoffroy Hegde, Vinay Horton, Matthew K. Huck, Patrick Huhs, Georg Hummelshøj, Jens Kariryaa, Ankit Kozinsky, boris Kumbhar, Snehal Liu, Mohan Marzari, Nicola Morris, Andrew J. Mostofi, Arash A. Persson, Kristin A. Petretto, Guido Purcell, Thomas Ricci, Francesco Rose, Frisco Scheffler, Matthias Speckhard, Daniel Uhrin, Martin Vaitkus, Antanas Villars, Pierre Waroquiers, David Wolverton, Chris Wu, Michael Yang, Xiaoyu École Polytechnique Fédérale de Lausanne Lausanne1015 Switzerland Materials Design and Informatics Unit Department of Physics Chemistry and Biology Linköping University Sweden Tilde Materials Informatics Straßmannstraße 25 Berlin10249 Germany Materials Platform for Data Science Sepapaja 6 Tallinn15551 Estonia Theory of Condensed Matter Group Cavendish Laboratory 19 J.J. Thomson Avenue CambridgeCB3 0HE United Kingdom Lawrence Berkeley Labs BerkeleyCA United States Chemin des Étoiles 8 Louvain-la-Neuve1348 Belgium Department of Physics King's College London London United Kingdom Department of Materials Science and Engineering Northwestern University EvanstonIL60208 United States Institute of Biotechnology Life Science Center Vilnius University Saulétekio av. 7 VilniusLT-10257 Lithuania Institute of Computer Science Faculty of Mathematics and Informatics Vilnius University Naugarduko g. 24 VilniusLT-03225 Lithuania Fritz-Haber-Institut der Max-Planck-Gesellschaft Faradayweg 4-6 Berlin14195 Germany Center for Autonomous Materials Design Duke University DurhamNC27708 United States Department of Mechanical Engineering and Materials Science Duke University DurhamNC27708 United States Humboldt-Universität zu Berlin Institut für Physik and IRIS Adlershof Berlin12489 Germany École Polytechnique Fédérale de Lausanne Sion1951 Switzerland Trieste34136 Italy Hermann-von-Helmholtz-Platz 1 Eggenstein-Leopoldshafen76344 Germany Materials Measurement Laboratory National Institute of Standards and Technology GaithersburgMD20899 United States Ansys 300 Rustat House 62 Clifton Rd CambridgeCB1 7EG United Kingdom De Zaale 20 Eindhoven5612 AJ Netherlands Department of Physics and Science of Advanced Materials Program Central Michigan University Mount PleasantMI48859 United States Argonne National Laboratory LemontIL60439 United States Thayer School of Engineering Dartmouth College HanoverNH03755 United States Los AltosCA940

The Open Databases Integration for Materials Design (OPTIMADe) consortium has designed a universal application programming interface (API) to make materials databases accessib.e and interoperab.e. We outline the first stab.e release of the specification, v1.0, which is already supported by many leading databases and several software packages. We illustrate the advantages of the OPTIMADe API through worked examples on each of the public materials databases that support the full API specification. © 2021, CC bY.

关键词： Specifications

Dissipative Landau-Zener tunneling in the crossover regime from weak to strong environment coupling

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arXiv 2022年

作者： Dai, X. Trappen, R. Chen, H. Melanson, D. Yurtalan, M.A. Tennant, D.M. Martinez, A.J. Tang, Y. Mozgunov, e. Gibson, J. Grover, J.A. Disseler, S.M. basham, J.I. Novikov, S. Das, R. Melville, A.J. Niedzielski, b.M. Hirjibehedin, C.F. Serniak, K. Weber, S.J. Yoder, J.L. Oliver, W.D. Zick, K.M. Lidar, D.A. Lupascu, A. Institute for Quantum Computing University of Waterloo WaterlooONN2L 3G1 Canada Department of Physics and Astronomy University of Waterloo WaterlooONN2L 3G1 Canada Center for Quantum Information Science & Technology University of Southern California Los AngelesCA90089 United States Department of Electrical & Computer Engineering University of Southern California Los AngelesCA90089 United States Department of Electrical and Computer Engineering University of Waterloo WaterlooONN2L 3G1 Canada University of Southern California - Information Sciences Institute ArlingtonVA22203 United States Northrop Grumman Corporation LinthicumMD21090 United States Department of Physics and Astronomy Dartmouth College HanoverNH03755 United States Research Laboratory of Electronics Massachusetts Institute of Technology CambridgeMA02139 United States Lincoln Laboratory Massachusetts Institute of Technology LexingtonMA02421 United States QuEra Computing Inc. 1284 Soldiers Field Road BostonMA02135 United States Atlantic Quantum Corp. CambridgeMA02139 United States Department of Chemistry University of Southern California Los AngelesCA90089 United States Department of Physics University of Southern California Los AngelesCA90089 United States Waterloo Institute for Nanotechnology University of Waterloo WaterlooONN2L 3G1 Canada Department of Physics ETH Zurich ZurichCH-8093 Switzerland Department of Physics Harvard University CambridgeMA02138 United States Rigetti Computing BerkeleyCA94710 United States VancouverBCV6E 4B1 Canada

Landau-Zener tunneling, which describes the transition in a two-level system during a sweep through an anti-crossing, is a model applicab.e to a wide range of physical phenomena. Realistic quantum systems are affected by dissipation due to coupling to their environments. An important aspect of understanding such open quantum systems is the relative energy scales of the system itself and the system-environment coupling, which distinguishes the weak- and strong-coupling regimes. Using a tunab.e superconducting flux qubit, we ob.erve the crossover from weak to strong coupling to the environment in Landau-Zener tunneling. Our results confirm previous theoretical studies of dissipative Landau-Zener tunneling in the weak and strong coupling limits. We devise a spin bath model that effectively captures the crossover regime. This work is relevant for understanding the role of dissipation in quantum annealing, where the system is expected to go through a cascade of Landau-Zener transitions before reaching the target state. Copyright © 2022, The Authors. All rights reserved.

关键词： Quantum optics

examination of cluster production in excited light systems at Fermi energies from new experimental data and comparison with transport model calculations

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arXiv 2023年

作者： Frosin, C. Piantelli, S. Casini, G. Ono, A. Camaiani, A. baldesi, L. barlini, S. borderie, b. bougault, R. Ciampi, C. Cicerchia, M. Chbihi, A. Dell’Aquila, D. Dueñas, J.A. Fabris, D. Fab.e, Q. Frankland, J.D. Génard, T. Gramegna, F. Gruyer, D. Henri, M. Hong, b. Kweon, M.J. Kim, S. Kordyasz, A. Kozik, T. Lombardo, I. Lopez, O. Marchi, T. Mazurek, K. Nam, S.H. Lemarié, J. LeNeindre, N. Ottanelli, P. Parlog, M. Park, J. Pasquali, G. Poggi, G. Rebillard-Soulié, A. Sun, b.H. Stefanini, A.A. Terashima, S. Upadhyaya, S. Valdré, S. Verde, G. Vient, e. Vigilante, M. Dipartimento di Fisica Università di Firenze Sesto FiorentinoI-50019 Italy INFN Sezione di Firenze Sesto FiorentinoI-50019 Italy Department of Physics Tohoku University Sendai980-8578 Japan Instituut voor Kern- en Stralingsfysica K.U. Leuven Celestijnenlaan 200D LeuvenB-3001 Belgium Université Paris-Saclay CNRS IN2P3 IJCLab Orsay91405 France Normandie Université ENSICAEN UNICAEN CNRS IN2P3 LPC Caen Caen14000 France INFN Laboratori Nazionali di Legnaro Legnaro35020 Italy CEA/DRF CNRS IN2P3 Boulevard Henri Becquerel CaenF-14076 France Dipartimento di Scienze Chimiche Fisiche Matematiche e Naturali Università degli Studi di Sassari Sassari07100 Italy INFN Laboratori Nazionali del Sud Catania95123 Italy Departamento de Ingeniería Eléctrica y Centro de Estudios Avanzados en Física Matemáticas y Computación Universidad de Huelva Huelva21007 Spain INFN Sezione di Padova Padova35131 Italy Université de Toulouse CNRS UPS ToulouseF-31062 Cedex 9 France Korea University Seoul02841 Korea Republic of Department of Physics Korea University Seoul02841 Korea Republic of Department of Physics Inha University Incheon22212 Korea Republic of Institute for Basic Science Daejeon34126 Korea Republic of Heavy Ion Laboratory University of Warsaw Warszawa02-093 Poland Faculty of Physics Astronomy and Applied Computer Science Jagiellonian University Kraków30-348 Poland INFN Sezione di Catania Catania95123 Italy Dip. di Fisica e Astronomia Università di Catania via S. Sofia 64 Catania95123 Italy Institute of Nuclear Physics Polish Academy of Sciences Radzikowskiego 152 KrakowPL-31342 Poland Magurele BucharestRO-077125 Romania School of Physics and Nuclear Energy Engineering Beihang University Beijing100191 China Dipartimento di Fisica Università di Napoli Napoli80126 Italy INFN Sezione di Napoli Napoli80126 Italy

Four different reactions, 32S+12C and 20Ne+12C at 25 and 50 MeV/nucleon, have b.en measured with the FAZIA detector capab.e of full isotopic identification of most forward emitted reaction products. Fragment multiplicities, angular distributions and energy spectra have b.en measured and compared with Monte Carlo simulations, i.e. the antisymmetrized molecular dynamics (AMD) and the heavy-ion phase space exploration (HIPSe) models. These models are combined with two different afterburner codes (HF' and SIMON) to describe the decay of the excited primary fragments. In the case of AMD, the effect of including the clustering and inter-clustering processes to form bound particles and fragments is discussed. A clear confirmation of the role of the cluster aggregation in the reaction dynamics and particle production for these light systems, for which the importance of the clustering process increases with bombarding energy, is obtained. © 2023, CC bY-SA.

关键词： Heavy ions

S-wave elastic scattering of o-Ps from H2 at low energy

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Physical Review A 2019年第3期100卷 032701-032701页

作者： J.-Y. Zhang M.-S. Wu Y. Qian X. Gao Y.-J. Yang K. Varga Z.-C. Yan U. Schwingenschlögl State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and Mathematics Chinese Academy of Sciences Wuhan 430071 China Beijing Computational Science Research Center Beijing 100193 China Physical Science and Engineering Division King Abdullah University of Science and Technology Thuwal 23955-6900 Saudi Arabia Department of Computer Science and Technology East China Normal University Shanghai 200062 China Institute of Atomic and Molecular Physics Jilin University Changchun 130012 China Department of Physics and Astronomy Vanderbilt University Nashville Tennessee 37235 USA Department of Physics University of New Brunswick Fredericton New Brunswick Canada E3B 5A3

The confined variational method is applied to investigate the low-energy elastic scattering of orthopositronium from H2 by first-principles quantum mechanics. Describing the correlations with explicitly correlated Gaussians, we obtain accurate s-wave phase shifts and pickoff annihilation parameters for different incident momenta. by a least-squares fit of the data to the effective-range theory, we determine the s-wave scattering length AS=2.02a0 and the zero-energy value of the pickoff annihilation parameter, 1Zeff=0.1839. The obtained 1Zeff agrees well with the precise experimental value of 0.186(1) [G. L. Wright et al., J. Phys. b 16, 4065 (1983)] and the obtained AS agrees well with the value of 2.1(2)a0 estimated from the average experimental momentum-transfer cross section for positronium energy below 0.3 eV [F. Saito et al., J. Phys. b 36, 4191 (2003)].

关键词： electron & positron scattering Interatomic & molecular potentials Scattering theory

Resolved neutral outflow from a lensed dusty Star-Forming Galaxy at z=2.09

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arXiv 2021年

作者： butler, Kirsty M. van der Werf, Paul P. Rybak, Matus Costa, Tiago Cox, Pierre Weiß, Axel Michalowski, Michal J. Riechers, Dominik A. Rigopoulou, Dimitra Marchetti, Lucia eales, Stephen Valtchanov, Ivan Leiden Observatory Leiden University PO Box 9513 RA Leiden2300 Netherlands THz Sensing Group Faculty of Electrical Engineering Mathematics and Computer Science TU Delft Netherlands Max-Planck-Institut für Astrophysik Karl-Schwarzschild-Straße 1 Garching b. MünchenD-85748 Germany Sorbonne Université UPMC Université Paris 6 CNRS UMR 7095 Institut d'Astrophysique de Paris 98b boulevard Arago Paris75014 France Max-Planck-Institut für Radioastronomie Auf dem Hügel 69 BonnD-53121 Germany Astronomical Observatory Institute Faculty of Physics Adam Mickiewicz University ul. Sloneczna 36 Poznan60-286 Poland Department of Astronomy Cornell University Space Sciences Building IthacaNY14853 United States Astrophysics Department of Physics University of Oxford Keble Road OxfordOX1 3RH United Kingdom Department of Astronomy University of Cape Town Private Bag X3 Rondebosch Cape Town7701 South Africa INAF Institute for Radio Astronomy Via Gobetti 101 Bologna40129 Italy School of Physics and Astronomy Cardiff University The Parade CardiffCF24 3AA United Kingdom Telespazio UK for ESA European Space Astronomy Centre Operations Department Villanueva de la CañadaE-28691 Spain

We report the detection of a massive neutral gas outflow in the z=2.09 gravitationally lensed Dusty Star-Forming Galaxy HATLASJ085358.9+015537 (G09v1.40), seen in absorption with the OH+(11 − 10) transition using spatially resolved (0.500 × 0.400) Atacama Large Millimeter/submillimeter Array (ALMA) ob.ervations. The blueshifted OH+ line is ob.erved simultaneously with the CO(9-8) emission line and underlying dust continuum. These data are complemented by high angular resolution (0.1700 × 0.1300) ALMA ob.ervations of CH+(1-0) and underlying dust continuum, and Keck 2.2 µm imaging tracing the stellar emission. The neutral outflow, dust, dense molecular gas and stars all show spatial offsets from each other. The total atomic gas mass of the ob.erved outflow is 6.7 × 109M☉, > 25% as massive as the gas mass of the galaxy. We find that a conical outflow geometry best describes the OH+ kinematics and morphology and derive deprojected outflow properties as functions of possib.e inclination (0.38◦ − 64◦). The neutral gas mass outflow rate is between 83 − 25400 M☉ yr−1, exceeding the star formation rate (788 ±300 M☉ yr−1) if the inclination is > 3.6◦ (mass-loading factor = 0.3-4.7). Kinetic energy and momentum fluxes span 4.4 − 290 × 109 L☉ and 0.1 − 3.7 × 1037 dyne, respectively (energy-loading factor = 0.013-16), indicating that the feedback mechanisms required to drive the outflow depend on the inclination assumed. We derive a gas depletion time between 29 and 1 Myr, but find that the neutral outflow is likely to remain bound to the galaxy, unless the inclination is small, and may be re-accreted if additional feedback processes do not occur. © 2021, CC bY.

关键词： Galaxies

PMT gain calibration and monitoring based on highly compressed hit information in KM3NeT 37

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PMT gain calibration and monitoring based on highly compress...

37th International Cosmic Ray Conference, ICRC 2021

作者： Jung, bouke de Jong, Maarten Ageron, M. Aiello, S. Albert, A. Alshamsi, M. Alves Garre, S. Aly, Z. Ambrosone, A. Ameli, F. Andre, M. Androulakis, G. Anghinolfi, M. Anguita, M. Anton, G. Ardid, M. Ardid, S. Assal, W. Aublin, J. bagatelas, C. baret, b. basegmez du Pree, S. bendahman, M. benfenati, F. berb.e, e. van den berg, A.M. bertin, V. beurthey, S. van beveren, V. biagi, S. billault, M. bissinger, M. b.ettcher, M. bou Cabo, M. boumaaza, J. bouta, M. boutonnet, C. bouvet, G. bouwhuis, M. bozza, C. brânzaş, H. bruijn, R. brunner, J. bruno, R. buis, e. buompane, R. busto, J. Caiffi, b. Caillat, L. Calvo, D. Campion, S. Capone, A. Carduner, H. Carretero, V. Castaldi, P. Celli, S. Cereseto, R. Chabab, M. Champion, C. Chau, N. Chen, A. Cherubini, S. Chiarella, V. Chiarusi, T. Circella, M. Cocimano, R. Coelho, J.A.b. Coleiro, A. Colomer Molla, M. Colonges, S. Coniglione, R. Cosquer, A. Coyle, P. Cresta, M. Creusot, A. Cruz, A. Cuttone, G. D’Amico, A. Dallier, R. De Martino, b. De Palma, M. Di Palma, I. Díaz, A.F. Diego-Tortosa, D. Distefano, C. Domi, A. Donzaud, C. Dornic, D. Dörr, M. Drouhin, D. eberl, T. eddyamoui, A. van eeden, T. van eijk, D. el bojaddaini, I. eljarrari, H. elsaesser, D. enzenhöfer, A. espinosa, V. Fermani, P. Ferrara, G. Filipović, M.D. Filippini, F. Fransen, J. Fusco, L.A. Gajanana, D. Gal, T. García Méndez, J. Garcia Soto, A. Garçon, e. Garufi, F. Gatius, C. Geißelb.echt, N. Gialanella, L. Giorgio, e. Gozzini, S.R. Gracia, R. Graf, K. Grella, G. Guderian, D. Guidi, C. Guillon, b. Gutiérrez, M. Haefner, J. Hallmann, S. Hamdaoui, H. van Haren, H. Heijb.er, A. Hekalo, A. Hennig, L. Henry, S. Hernández-Rey, J.J. Hofestädt, J. Huang, F. Idrissi Ibnsalih, W. Ilioni, A. Illuminati, G. James, C.W. Janezashvili, D. Jansweijer, P. de Jong, M. de Jong, P. Jung, b.J. Kadler, M. Kalaczyński, P. Kalekin, O. Katz, U.F. Kayzel, F. Keller, P. Khan Chowdhury, N.R. Kistauri, G. Science Park Amsterdam105 Netherlands University of Amsterdam Institute of Physics Science Park 904 Amsterdam Netherlands Leiden University Leiden Institute of Physics Niels Bohrweg 2 Leiden Netherlands Sapienza Università di Roma Dipartimento di Fisica Piazzale Aldo Moro 5 Rome Italy Aix Marseille Univ CNRS IN2P3 CPPM Marseille France INFN Sezione di Catania Via Santa Sofia 64 Catania95123 Italy Université de Strasbourg CNRS IPHC UMR 7178 StrasbourgF-67000 France Université de Paris CNRS Astroparticule et Cosmologie ParisF-75013 France IFIC - Instituto de Física Corpuscular CSIC - Universitat de València c/Catedrático José Beltrán 2 Paterna Valencia46980 Spain INFN Sezione di Napoli Complesso Universitario di Monte S. Angelo Via Cintia ed. G Napoli80126 Italy Università di Napoli "Federico II" Dip. Scienze Fisiche "E. Pancini" Complesso Universitario di Monte S. Angelo Via Cintia ed. G Napoli80126 Italy INFN Sezione di Roma Piazzale Aldo Moro 2 Roma00185 Italy Universitat Politècnica de Catalunya Laboratori d’Aplicacions Bioacústiques Centre Tecnològic de Vilanova i la Geltrú Avda. Rambla Exposició s/n Vilanova i la Geltrú08800 Spain NCSR Demokritos Institute of Nuclear and Particle Physics Ag. Paraskevi Attikis Athens15310 Greece INFN Sezione di Genova Via Dodecaneso 33 Genova16146 Italy University of Granada Dept. of Computer Architecture and Technology CITIC Granada18071 Spain Friedrich-Alexander-Universität Erlangen-Nürnberg Erlangen Centre for Astroparticle Physics Erwin-Rommel-Straße 1 Erlangen91058 Germany Universitat Politècnica de València Instituto de Investigación para la Gestión Integrada de las Zonas Costeras C/Paranimf 1 Gandia46730 Spain Nikhef National Institute for Subatomic Physics PO Box 41882 Amsterdam1009 DB Netherlands University Mohammed V in Rabat Faculty of Sciences 4 av. Ibn Battouta B.P. 1014 RabatR.P. 10000 Morocco Dipartimento di Fisica INFN Sezione di Padova Università di Padov

The cubic-kilometre neutrino telescope, consisting of large-scale 3D-arrays of photomultiplier tubes (PMTs) currently under construction on the Mediterranean seabed, relies on accurate calibration procedures in order to answer its science goals. These proceedings present an overview of a novel gain calibration method based on highly compressed PMT hit information. In particular, it is shown that the PMT gains can be tuned to within 2% of the nominal value, based on the measured time-over-threshold. © Copyright owned by the author(s).

关键词： Photomultipliers

Higher-order moments of the elliptic flow distribution in PbPb collisions at sNN = 5.02 TeV

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Journal of High energy Physics 2024年第2期2024卷 1-45页

作者： Tumasyan, A. Adam, W. Andrejkovic, J.W. bergauer, T. Chatterjee, S. Damanakis, K. Dragicevic, M. escalante Del Valle, A. Hussain, P.S. Jeitler, M. Krammer, N. Lechner, L. Liko, D. Mikulec, I. Paulitsch, P. Pitters, F.M. Schieck, J. Schöfbeck, R. Schwarz, D. Sonawane, M. Templ, S. Waltenberger, W. Wulz, C.-e. Darwish, M.R. Janssen, T. Kello, T. Rejeb Sfar, H. Van Mechelen, P. bols, e.S. D’Hondt, J. De Moor, A. Delcourt, M. el Faham, H. Lowette, S. Moortgat, S. Morton, A. Müller, D. Sahasransu, A.R. Tavernier, S. Van Doninck, W. Vannerom, D. Clerbaux, b. De Lentdecker, G. Favart, L. Hohov, D. Jaramillo, J. Lee, K. Mahdavikhorrami, M. Makarenko, I. Malara, A. Paredes, S. Pétré, L. Postiau, N. Thomas, L. Vanden bemden, M. Vander Velde, C. Vanlaer, P. Dobur, D. Knolle, J. Lamb.echt, L. Mestdach, G. Rendón, C. Samalan, A. Skovpen, K. Tytgat, M. Van Den bossche, N. Vermassen, b. Wezenb.ek, L. benecke, A. bruno, G. bury, F. Caputo, C. David, P. Delaere, C. Donertas, I.S. Giammanco, A. Jaffel, K. Jain, Sa. Lemaitre, V. Mondal, K. Taliercio, A. Tran, T.T. Vischia, P. Wertz, S. Alves, G.A. Coelho, e. Hensel, C. Moraes, A. Rebello Teles, P. Aldá Júnior, W.L. Alves Gallo Pereira, M. barroso Ferreira Filho, M. brandao Malbouisson, H. Carvalho, W. Chinellato, J. Da Costa, e.M. Da Silveira, G.G. De Jesus Damiao, D. Dos Santos Sousa, V. Fonseca De Souza, S. Martins, J. Mora Herrera, C. Mota Amarilo, K. Mundim, L. Nogima, H. Santoro, A. Silva Do Amaral, S.M. Sznajder, A. Thiel, M. Vilela Pereira, A. bernardes, C.A. Calligaris, L. Fernandez Perez Tomei, T.R. Gregores, e.M. Mercadante, P.G. Novaes, S.F. Padula, Sandra S. Aleksandrov, A. Antchev, G. Hadjiiska, R. Iaydjiev, P. Misheva, M. Rodozov, M. Shopova, M. Sultanov, G. Dimitrov, A. Ivanov, T. Litov, L. Pavlov, b. Petkov, P. Petrov, A. Shumka, e. Thakur, S. Cheng, T. Javaid, T. Mittal, M. Yuan, L. Ahmad, M. bauer, G. Hu, Z. Lezki, S. Yi, K. Chen, G.M. Chen, H.S. Chen, M. Iemmi, F. Jiang, C.H. Kapoor, A. Liao, H. Liu, Z.-A. Milosevic, V. Monti, F. Sharma, R. Tao, J. Thomas-Wilsker Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Instituto De Alta Investigación Universidad de Tarapacá Casilla 7 D Arica Chile Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Sun Yat-Sen University Guangzhou China University of Science and Technology of China Hefei China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) — Fudan University Shanghai China Zhejiang University Zhejiang Hangzhou China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt Center for High Energy Physics (CHEP-FU) Fayoum University El-Fayoum Egypt National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics

The hydrodynamic flow-like behavior of charged hadrons in high-energy lead-lead collisions is studied through multiparticle correlations. The elliptic anisotropy values based on different orders of multiparticle cumulants, vb>2b>{2k}, are measured up to the tenth order (k = 5) as functions of the collision centrality at a nucleon-nucleon center-of-mass energy of sb>NNb> = 5.02 TeV. The data were recorded by the CMS experiment at the LHC and correspond to an integrated luminosity of 0.607 nb⁻¹. A hierarchy is ob.erved between the coefficients, with vb>2b>b > vb>2b>b ≳ vb>2b>b ≳ vb>2b>b.e ≳ vb>2b>b. based on these results, centrality-dependent moments for the fluctuation-driven event-by-event vb>2b> distribution are determined, including the skewness, kurtosis and, for the first time, superskewness. Assuming a hydrodynamic expansion of the produced medium, these moments directly probe the initial-state geometry in high-energy nucleus-nucleus collisions. © The Author(s) 2024.

关键词： event-by-event fluctuation Harmonic Flow Heavy Ion experiments Relativistic Heavy Ion Physics

On the Potential Galactic Origin of the Ultra-High-energy event KM3-230213A

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arXiv 2025年

作者： Adriani, O. Aiello, S. Albert, A. Alhebsi, A.R. Alshamsi, M. Garre, S. Alves Ambrosone, A. Ameli, F. Andre, M. Aphecetche, L. Ardid, M. Ardid, S. Aublin, J. badaracco, F. bailly-Salins, L. bardačová, Z. baret, b. bariego-Quintana, A. becherini, Y. bendahman, M. Gualandi, F. benfenati benhassi, M. bennani, M. benoit, D.M. berb.e, e. berti, e. bertin, V. betti, P. biagi, S. b.ettcher, M. bonanno, D. bottai, S. bouasla, A.b. boumaaza, J. bouta, M. bouwhuis, M. bozza, C. bozza, R.M. brânzaş, H. b.etaudeau, F. b.euhaus, M. bruijn, R. brunner, J. bruno, R. buis, e. buompane, R. busto, J. Caiffi, b. Calvo, D. Capone, A. Carenini, F. Carretero, V. Cartraud, T. Castaldi, P. Cecchini, V. Celli, S. Cerisy, L. Chabab, M. Chen, A. Cherubini, S. Chiarusi, T. Circella, M. Clark, R. Cocimano, R. Coelho, J.A.b. Coleiro, A. Condorelli, A. Coniglione, R. Coyle, P. Creusot, A. Cuttone, G. Dallier, R. De benedittis, A. De Wasseige, G. Decoene, V. Deguire, P. Del Rosso, I. Di Mauro, L.S. Di Palma, I. Díaz, A.F. Diego-Tortosa, D. Distefano, C. Domi, A. Donzaud, C. Dornic, D. Drakopoulou, e. Drouhin, D. Ducoin, J.-G. Duverne, P. Dvornický, R. eberl, T. eckerová, e. eddymaoui, A. van eeden, T. eff, M. van eijk, D. bojaddaini, I.el. Hedri, S.el. Mentawi, S.el. ellajosyula, V. enzenhöfer, A. Ferrara, G. Filipović, M.D. Filippini, F. Franciotti, D. Fusco, L.A. Gal, T. Méndez, J. García Soto, A. Garcia Oliver, C. Gatius Geißelb.echt, N. Genton, e. Ghaddari, H. Gialanella, L. Gibson, b.K. Giorgio, e. Goos, I. Goswami, P. Gozzini, S.R. Gracia, R. Guidi, C. Guillon, b. Gutiérrez, M. Haack, C. van Haren, H. Heijb.er, A. Hennig, L. Hernández-Rey, J.J. Idrissi, A. Ibnsalih, W. Idrissi Illuminati, G. Janik, O. Joly, D. de Jong, M. de Jong, P. Jung, b.J. Kalaczyński, P. Keegans, J. Kikvadze, V. Kistauri, G. Kopper, C. Kouchner, A. Kovalev, Y.Y. Krupa, L. Kueviakoe, V. Kulikovskiy, V. Kvatadze, R. Labalme, M. Lahmann, R. INFN Sezione di Firenze via Sansone 1 Sesto Fiorentino50019 Italy Università di Firenze Dipartimento di Fisica e Astronomia via Sansone 1 Sesto Fiorentino50019 Italy Via Santa Sofia 64 Catania95123 Italy Université de Strasbourg CNRS IPHC UMR 7178 StrasbourgF-67000 France Université de Haute Alsace rue des Frères Lumière Mulhouse68093Cedex France Khalifa University of Science and Technology Department of Physics PO Box 127788 Abu Dhabi United Arab Emirates Aix Marseille Univ CNRS IN2P3 CPPM Marseille France c/Catedrático José Beltrán 2 Valencia Paterna46980 Spain Università di Napoli "Federico II" Dip. Scienze Fisiche "E. Pancini" Complesso Universitario di Monte S. Angelo Via Cintia ed. G Napoli80126 Italy INFN Sezione di Napoli Complesso Universitario di Monte S. Angelo Via Cintia ed. G Napoli80126 Italy INFN Sezione di Roma Piazzale Aldo Moro 2 Roma00185 Italy Universitat Politècnica de Catalunya Laboratori d’Aplicacions Bioacústiques Centre Tecnològic de Vilanova i la Geltrú Avda. Rambla Exposició s/n Vilanova i la Geltrú08800 Spain Subatech IMT Atlantique IN2P3 CNRS Nantes Université 4 rue Alfred Kastler - La Chantrerie BP Nantes20722 44307 France Universitat Politècnica de València Instituto de Investigación para la Gestión Integrada de las Zonas Costeras C/ Paranimf 1 Gandia46730 Spain Université Paris Cité CNRS Astroparticule et Cosmologie ParisF-75013 France INFN Sezione di Genova Via Dodecaneso 33 Genova16146 Italy Università di Genova Via Dodecaneso 33 Genova16146 Italy LPC CAEN Normandie Univ ENSICAEN UNICAEN CNRS IN2P3 6 boulevard Maréchal Juin Caen14050 France Comenius University in Bratislava Department of Nuclear Physics and Biophysics Mlynska dolina F1 Bratislava842 48 Slovakia Czech Technical University in Prague Institute of Experimental and Applied Physics Husova 240/5 Prague110 00 Czech Republic Università di Bologna Dipartimento di Fisica e Astronomia v.le C. Berti-Pichat 6/2

The KM3NeT ob.ervatory detected the most energetic neutrino candidate ever ob.erved, with an energy between 72 PeV and 2.6 eeV at the 90 % confidence level. The ob.erved neutrino is likely of cosmic origin. In this article, it is investigated if the neutrino could have b.en produced within the Milky Way. Considering the low fluxes of the Galactic diffuse emission at these energies, the lack of a nearby potential Galactic particle accelerator in the direction of the event and the difficulty to accelerate particles to such high energies in Galactic systems, we conclude that if the event is indeed cosmic, it is most likely of extragalactic origin. Copyright © 2025, The Authors. All rights reserved.

关键词： Neutrons