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Journal of Allergy and Clinical Immunology: Global 2024年第4期3卷 100326-100326页

作者： Herrmann, Susan Kulkarni, Rishabh Trevenen, Michelle Karuppasamy, Hana Willis, Catherine Berry, Renee Von Ungern-Sternberg, Britta Warrier, Niklesh Li, Ian Murray, Kevin Lucas, Michaela School of Medicine The University of Western Australia Perth Australia Department of Immunology Sir Charles Gairdner Hospital Perth Australia Centre for Applied Statistics School of Physics Mathematics and Computing The University of Western Australia Perth Australia Department of Immunology Fiona Stanley Hospital Perth Australia Department of Anaesthesia and Pain Medicine Perth Children's Hospital Perth Australia Division of Emergency Medicine Anaesthesia and Pain Medicine Medical School The University of Western Australia Perth Australia Institute for Paediatric Perioperative Excellence The University of Western Australia Perth Australia Perioperative Medicine Team Perioperative Care Program Telethon Kids Institute Perth Australia National Centre for Student Equity in Higher Education Curtin University Perth Australia School of Population Health The University of Western Australia Perth Australia

Background: The clinical consequences of an antibiotic allergy label are detrimental, impacting health care delivery and patient outcomes. We assessed hospital inpatients with intent to offer free antibiotic allergy labeling (AAL) assessment within a randomized controlled trial. Objective: We sought to determine the feasibility of establishing an adult antibiotic allergy delabeling service in a Western Australian tertiary public hospital. Methods: Inpatients (N = 1503) with AAL were identified through medical records and screened for eligibility to participate in a randomized controlled trial. Those recruited were randomized to undergo assessment by skin testing ± oral challenge, or direct oral challenge. A control group received usual care. Results: Of the 1503 inpatients with an AAL, 429 (28.5%) were eligible for AAL assessment. The primary excluding factor (1074 [71.5%]) was contraindicated medication use (387 [36.0%]), followed by cognitive impairment (298 [27.9%]). Thirty-nine patients were randomized, of which 20 received allergy testing and 19 usual care;all patients were followed up for 5 years. Older patients were less likely to be eligible (10-year increase: odds ratio, 0.82;95% CI, 0.77-0.88;P < .0001), whereas surgical patients were more likely to be eligible than medical patients (odds ratio, 2.49;95% CI, 1.97-3.16;P < .0001). Conclusions: Antibiotic allergy delabeling in the acute care context is not straightforward. Competing clinical concerns and patient acceptance are some barriers to an inpatient service. Nor is it apparent that inpatient versus outpatient testing is cost saving although select patient groups may benefit. Testing younger people and those with predicted high antibiotic usage will derive maximal individual and health system benefits. © 2024 The Authors

关键词： adult inpatients Antibiotic allergy delabeling drug allergy

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Soft X-ray emissions related to the solar wind charge exchange observed by the X-ray satellite observatories

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Journal of physics: Conference Series 2012年第8期388卷

作者： T Ishida T Kanda H Akamatsu T Enoki K Henmi Y Ishisaki Y Ezoe T Ohashi K Shinozaki K Mitsuda H Ohashi L Liu J Wang H Tanuma Department of Physics Tokyo Metropolitan University Hachioji Tokyo 192-0397 Japan Aerospace Research and Development Directorate JAXA Tsukuba Ibaraki 305-8505 Japan Institute of Space and Astronautical Science JAXA Sagamihara Kanagawa 252-5210 Japan Institute of Laser Engineering The University of Electro-Communications Chofu Tokyo 182-8585 Japan Institute of Applied Physics and Computational Mathematics PO Box 8009 Beijing 100088 China

We have observed the emission spectra in collisions of bare and hydrogen-like C and O ions with helium atoms and hydrogen molecules as target gases in the soft X-ray region using a window-less Si(Li) detector at collision energies around 100 keV. Because it is found that the 1s-2p emission is dominant in each spectrum, we indicate that the cascade from the upper states give the large population of the 2p state after the consideration using state-selective capture cross sections calculated by the TC-AOCC method.

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Dynamics of Nanosecond Laser Pulse Propagation and of Associated Instabilities in a Magnetized Underdense Plasma

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Physical Review Letters 2023年第26期130卷 265101-265101页

作者： W. Yao A. Higginson J.-R Marquès P. Antici J. Béard K. Burdonov M. Borghesi A. Castan A. Ciardi B. Coleman S. N. Chen E. d’Humières T. Gangolf L. Gremillet B. Khiar L. Lancia P. Loiseau X. Ribeyre A. Soloviev M. Starodubtsev Q. Wang J. Fuchs LULI—CNRS CEA UPMC Univ Paris 06: Sorbonne Université École Polytechnique Institut Polytechnique de Paris—F-91128 Palaiseau cedex France Sorbonne Université Observatoire de Paris Université PSL CNRS LERMA F-75005 Paris France Center for Energy Research University of California San Diego 9500 Gilman Drive La Jolla California 92093-0417 USA INRS-EMT 1650 boul Lionel-Boulet Varennes QC J3X 1S2 Canada CNRS LNCMI Univ Toulouse 3 INSA Toulouse Univ Grenoble Alpes EMFL 31400 Toulouse France JIHT Russian Academy of Sciences 125412 Moscow Russia School of Mathematics and Physics The Queen’s University Belfast Belfast United Kingdom CEA DAM DIF F-91297 Arpajon France “Horia Hulubei” National Institute for Physics and Nuclear Engineering RO-077125 Bucharest-Magurele Romania University of Bordeaux CELIA CNRS CEA UMR 5107 F-33405 Talence France Université Paris-Saclay CEA LMCE 91680 Bruyères-le-Châtel France Office National d’Etudes et de Recherches Aérospatiales (ONERA) Palaiseau 91123 France IAP-RAS Nizhny Novgorod 603950 Russia Institute of Applied Physics and Computational Mathematics Beijing 100094 China Department of Electrical and Computer Engineering University of Alberta 9211 116 St. NW Edmonton Alberta T6G 1H9 Canada

The propagation and energy coupling of intense laser beams in plasmas are critical issues in inertial confinement fusion. Applying magnetic fields to such a setup has been shown to enhance fuel confinement and heating. Here we report on experimental measurements demonstrating improved transmission and increased smoothing of a high-power laser beam propagating in a magnetized underdense plasma. We also measure enhanced backscattering, which our kinetic simulations show is due to magnetic confinement of hot electrons, thus leading to reduced target preheating.

关键词： High-energy-density plasmas Indirect drive Laser light absorption in plasmas Laser-plasma interactions Plasma stability

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A fractal model of earthquake occurrence: Theory, simulations and comparisons with the aftershock data

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Journal of physics: Conference Series 2011年第1期319卷

作者： Pathikrit Bhattacharya Bikas K Chakrabarti Kamal Department of Earth Sciences Indian Institute of Technology Roorkee Uttarakhand 247 667 India Department of Earth Sciences University of Western Ontario London Ontario N6A 5B7 Canada. (At present) Department of Geosciences Princeton University Guyot Hall Princeton NJ 08544 USA. (From September 2011) Theoretical Condensed Matter Physics Division and Centre for Applied Mathematics and Computational Science Saha Institute of Nuclear Physics Kolkata West Bengal 700064 India

Our understanding of earthquakes is based on the theory of plate tectonics. Earthquake dynamics is the study of the interactions of plates (solid disjoint parts of the lithosphere) which produce seismic activity. Over the last about fifty years many models have come up which try to simulate seismic activity by mimicking plate plate interactions. The validity of a given model is subject to the compliance of the synthetic seismic activity it produces to the well known empirical laws which describe the statistical features of observed seismic activity. Here we present a review of one such, purely geometric, model of earthquake dynamics, namely The Two Fractal Overlap Model. The model tries to emulate the stick-slip dynamics of lithospheric plates with fractal surfaces by evaluating the time-evolution of overlap lengths of two identical Cantor sets sliding over each other. As we show later in the text, some statistical aspects of natural seismicity are naturally captured by this simple model. More importantly, however, this model also reveals a new statistical feature of aftershock sequences which we have verified to be present in nature as well. We show that, both in the model as well as in nature, the cumulative integral of aftershock magnitudes over time is a remarkable straight line with a characteristic slope. This slope is closely related to the fractal geometry of the fault surface that produces most of thee aftershocks. We also go on to discuss the implications that this feature may have in possible predictions of aftershock magnitudes or times of occurrence.

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Long term study of the blazar S5 0716+714: investigating a turbulent jet at all wavelengths 38

Long term study of the blazar S5 0716+714: investigating a t...

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38th International Cosmic Ray Conference, ICRC 2023

作者： Podobnik, F. Manganaro, M. Jormanainen, J. Lindfors, E. Bonnoli, G. Paoletti, R. Jorstad, S. Kiehlmann, S. Agudo, I. Elsasser, D. Lorey, C. Raiteri, C. Villata, M. Redhead, A.C. Marscher, A. Abe, H. Abe, S. Abhir, J. Acciari, V.A. Aniello, T. Ansoldi, S. Antonelli, L.A. Arbet Engels, A. Arcaro, C. Artero, M. Asano, K. Baack, D. Babić, A. Baquero, A. Barres de Almeida, U. Barrio, J.A. Batković, I. Baxter, J. Becerra González, J. Bednarek, W. Bernardini, E. Bernardos, M. Bernete, J. Berti, A. Besenrieder, J. Bigongiari, C. Biland, A. Blanch, O. Bošnjak, Ž. Burelli, I. Busetto, G. Campoy-Ordaz, A. Carosi, A. Carosi, R. Carretero-Castrillo, M. Castro-Tirado, A.J. Ceribella, G. Chai, Y. Chilingarian, A. Cifuentes, A. Cikota, S. Colombo, E. Contreras, J.L. Cortina, J. Covino, S. D’Amico, G. D’Elia, V. Da Vela, P. Dazzi, F. De Angelis, A. De Lotto, B. Del Popolo, A. Delfino, M. Delgado, J. Delgado Mendez, C. Depaoli, D. Di Pierro, F. Di Venere, L. Dominis Prester, D. Donini, A. Dorner, D. Doro, M. Elsaesser, D. Emery, G. Escudero, J. Fariña, L. Fattorini, A. Foffano, L. Font, L. Fröse, S. Fukami, S. Fukazawa, Y. García López, R.J. Garczarczyk, M. Gasparyan, S. Gaug, M. Giesbrecht Paiva, J.G. Giglietto, N. Giordano, F. Gliwny, P. Godinović, N. Grau, R. Green, D. Green, J.G. Hadasch, D. Hahn, A. Hassan, T. Heckmann, L. Herrera, J. Hrupec, D. Hütten, M. Imazawa, R. Inada, T. Iotov, R. Ishio, K. Jiménez Martínez, I. Kerszberg, D. Kluge, G.W. Kobayashi, Y. Kouch, P.M. Kubo, H. Kushida, J. Láinez Lezáun, M. Lamastra, A. Lelas, D. Leone, F. Linhoff, L. Lombardi, S. Longo, F. López-Coto, R. López-Moya, M. López-Oramas, A. Loporchio, S. Lorini, A. Lyard, E. Machado de Oliveira Fraga, B. Majumdar, P. Makariev, M. Maneva, G. Mang, N. Manganaro, M. Mangano, S. Mannheim, K. Mariotti, M. Martínez, M. Martínez-Chicharro, M. Mas-Aguilar, A. Mazin, D. Menchiari, S. Mender, S. Mićanović, S. Miceli, D. Miener, T. Miranda, J.M. Università di Siena INFN Pisa Via Roma 56 SienaI-53100 Italy Faculty of Physics University of Rijeka Radmile Matječić 2 Rijeka51000 Croatia Finnish MAGIC Group Finnish Centre for Astronomy with ESO University of Turku TurkuFI-20014 Finland RomeI-00136 Italy Institute of Astrophysics Foundation for Research and Technology-Hellas HeraklionGR-71110 Greece Instituto de Astrofisica de Andalucia-CSIC Glorieta de la Astronomía Granada18008 Spain Department of Physics Otto-Hahn-Str. 4a Dortmund44227 Germany Hans-Haffner-Sternwarte Naturwissenschaftliches Labor für Schüler am FKG Friedrich-Koenig-Gymnasium WürzburgD-97082 Germany INAF Osservatorio Astrofisico di Torino via Osservatorio 20 Pino TorineseI-10025 Italy Caltech The Division of Physics Mathematics and Astronomy 1200 E California Blvd PasadenaCA91125 United States Institute for Astrophysical Research Boston University 725 Commonwealth Avenue BostonMA02215 United States The University of Tokyo Kashiwa Chiba 277-8582 Japan ETH Zürich ZürichCH-8093 Switzerland Instituto de Astrofísica de Canarias Dpto. de Astrofísica Universidad de La Laguna Tenerife La LagunaE-38200 Spain Università di Udine INFN Trieste UdineI-33100 Italy Max-Planck-Institut für Physik MünchenD-80805 Germany Università di Padova INFN PadovaI-35131 Italy Bellaterra BarcelonaE-08193 Spain Technische Universität Dortmund DortmundD-44221 Germany Zagreb10000 Croatia IPARCOS Institute EMFTEL Department Universidad Complutense de Madrid MadridE-28040 Spain URCA RJ Rio de Janeiro22290-180 Brazil University of Lodz Faculty of Physics and Applied Informatics Department of Astrophysics Lodz90-236 Poland Centro de Investigaciones Energéticas Medioambientales y Tecnológicas MadridE-28040 Spain Departament de Física CERES-IEEC Universitat Autònoma de Barcelona BellaterraE-08193 Spain Università di Pisa INFN Pisa PisaI-56126 Italy Universitat de Barcelona ICCUB IEEC-UB BarcelonaE-08028 S

The blazar S5 0716+714 is an intermediate BL Lacertae object remarkable for its variability in many energy bands. It was discovered by MAGIC in the very-high-energy (VHE) gamma-ray range in 2008. Later in 2015 an impressive electric vector polarization angle (EVPA) swing was detected in connection with a multiwavelength flaring event including the VHE gamma-ray band. This generated interest in further studies of the jet of this source and its electromagnetic emission at all wavelengths. Since then, MAGIC has monitored the source in coordination with other observatories and here we present the long-term study using data from 2015 to 2022 in a MWL context. The data set also includes the extraordinary flaring activity of 2017, so far the historical maximum detected for this source in the optical and VHE gamma-ray band. © Copyright owned by the author(s) under the terms of the Creative Commons.

关键词： Gamma rays

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Results of an implementation of the dual surface method to treat the non-uniqueness in solving acoustic exterior problems using the boundary element method

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Proceedings of Meetings on Acoustics 2013年第1期19卷

作者： Ralf Burgschweiger Ingo Schäfer Adel Mohsen Rafael Piscoya Martin Ochmann Bodo Nolte Department II Project Group Computational Acoustics Beuth Hochschule für Technik Berlin University of Applied Sciences Luxemburger Str. 10 Berlin Berlin 13353 Germany Maritime Technology and Research (WTD71/FWG) Federal Armed Forces Underwater Acoustics and Marine Geophysics Research Institute Klausdorfer Weg 2-24 Kiel 24148 Germany Engineering Mathematics & Physics Department Engineering Faculty Cairo University Giza 12613 Egypt Department II Project Group Computational Acoustics Beuth Hochschule für Technik Berlin University of Applied Sciences Luxemburger Str. 10 Berlin 13353 Germany

The problem of non-uniqueness (NU) of the solution of exterior acoustic problems when using the boundary element method (BEM) is well known. Methods like the Burton-Miller technique or the CHIEF method are used to solve this challenge at the expense of more complex procedures for handling hypersingular integrals and/or higher computing times due to higher complexity of the algorithm or additional equations. The dual surface method, commonly used for electromagnetic problems, was adapted for acoustic radiation and scattering problems. The basic principles of methods to solve the NU problem are outlined and results for different models and solution procedures are presented, taking into account quality, solution time and the numerical advantages when using iterative solvers.

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The next decade of astroinformatics and astrostatistics

arXiv

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arXiv 2019年

作者： Siemiginowska, Aneta Eadie, Gwendolyn Czekala, Ian Feigelson, Eric Ford, Eric B. Kashyap, Vinay Kuhn, Michael Loredo, Tom Ntampaka, Michelle Stevens, Abbie Avelino, Arturo Borne, Kirk Budavari, Tamas Burkhart, Blakesley Cisewski-Kehe, Jessi Civano, Francesca Chilingarian, Igor van Dyk, David A. Fabbiano, Giuseppina Finkbeiner, Douglas P. Foreman-Mackey, Daniel Freeman, Peter Fruscione, Antonella Goodman, Alyssa A. Graham, Matthew Guenther, Hans Moritz Hakkila, Jon Hernquist, Lars Huppenkothen, Daniela James, David J. Law, Casey Lazio, Joseph Lee, Thomas López-Morales, Mercedes Mahabal, Ashish A. Mandel, Kaisey Meng, Xiao-Li Moustakas, John Muna, Demitri Peek, J.E.G. Richards, Gordon Portillo, Stephen K.N. Scargle, Jeff de Souza, Rafael S. Speagle, Joshua S. Stassun, Keivan G. Stenning, David C. Taylor, Stephen R. Tremblay, Grant R. Trimble, Virginia Yanamandra-Fisher, Padma A. Young, C. Alex Center for Astrophysics AAS Working Group on Astroinformatics and Astrostatistics eScience Institute University of Washington SeattleWA98195 United States DIRAC Institute Department of Astronomy University of Washington SeattleWA98195 United States Department of Astronomy University of Washington SeattleWA98195 United States Department of Astronomy University of California BerkeleyCA94720 United States Penn State University University ParkPA16802 United States Center for Astrophysics Harvard & Smithsonian CambridgeMA02138 United States California Institute of Technology PasadenaCA91109 United States Department of Statistical Sciences IthacaNY14853 United States Harvard University CambridgeMA02138 United States Department of Physics & Astronomy Michigan State University East LansingMI48824 United States Department of Astronomy University of Michigan Ann ArborMI48109 United States Booz Allen Hamilton Annapolis JunctionMD United States Department of Applied Mathematics & Statistics Johns Hopkins University BaltimoreMD21218 United States Department of Statistics & Data Science Yale University New HavenCT06511 United States Department of Mathematics Imperial College London SW7 2AZ United Kingdom Flatiron Institute Center for Computational Astrophysics New YorkNY10010 United States Carnegie Mellon University PittsburghPA United States Massachusetts Institute of Technology Kavli Institute for Astrophysics and Space Research CambridgeMA02139 United States Department of Physics & Astronomy Associate Dean of the Graduate School University of Charleston CharlestonSC29424 United States Jet Propulsion Laboratory California Institute of Technology PasadenaCA91109 United States University of California DavisCA95616 United States TAPIR Group Division of Physics Mathematics & Astronomy California Institute of Technology PasadenaCA91125 United States University of Cambridge CambridgeCB3 0HA United Kingdom Department of Phy

Over the past century, major advances in astronomy and astrophysics have been largely driven by improvements in instrumentation and data collection. With the amassing of high quality data from new telescopes, and especially with the advent of deep and large astronomical surveys, it is becoming clear that future advances will also rely heavily on how those data are analyzed and interpreted. New methodologies derived from advances in statistics, computer science, and machine learning are beginning to be employed in sophisticated investigations that are not only bringing forth new discoveries, but are placing them on a solid footing. Progress in wide-field sky surveys, interferometric imaging, precision cosmology, exoplanet detection and characterization, and many subfields of stellar, Galactic and extragalactic astronomy, has resulted in complex data analysis challenges that must be solved to perform scientific inference. Research in astrostatistics and astroinformatics will be necessary to develop the state-of-the-art methodology needed in astronomy. Overcoming these challenges requires dedicated, interdisciplinary research. We recommend: (1) increasing funding for interdisciplinary projects in astrostatistics and astroinformatics;(2) dedicating space and time at conferences for interdisciplinary research and promotion;(3) developing sustainable funding for long-term astrostatisics appointments;and (4) funding infrastructure development for data archives and archive support, state-of-the-art algorithms, and efficient computing. Copyright © 2019, The Authors. All rights reserved.

关键词： Finance

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Objective comparison of methods to decode anomalous diffusion

arXiv

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arXiv 2021年

作者： Muñoz-Gil, Gorka Volpe, Giovanni Garcia-March, Miguel Angel Aghion, Erez Argun, Aykut Hong, Chang Beom Bland, Tom Bo, Stefano Conejero, J. Alberto Firbas, Nicolás Orts, Òscar Garibo Gentili, Alessia Huang, Zihan Jeon, Jae-Hyung Kabbech, Hélène Kim, Yeongjin Kowalek, Patrycja Krapf, Diego Loch-Olszewska, Hanna Lomholt, Michael A. Masson, Jean-Baptiste Meyer, Philipp G. Park, Seongyu Requena, Borja Smal, Ihor Song, Taegeun Szwabinski, Janusz Thapa, Samudrajit Verdier, Hippolyte Volpe, Giorgio Widera, Arthur Lewenstein, MacIej Metzler, Ralf Anzo, Carlo 08860 Spain Department of Physics University of Gothenburg Origovägen 6B GothenburgSE-41296 Sweden Instituto Universitario de Matemática Pura y Aplicada Universitat Politècnica de València Spain Max Planck Institute for the Physics of Complex Systems Nöthnitzer Straße 38 DresdenDE-01187 Germany Department of Physics Pohang University of Science and Technology Pohang37673 Korea Republic of Francis Crick Institute 1 Midland Road LondonNW1 1AT United Kingdom Department of Chemistry University College London 20 Gordon Street LondonWC1H 0AJ United Kingdom School of Physics and Electronics Hunan University Changsha410082 China Department of Cell Biology Erasmus Mc Rotterdam Netherlands Faculty of Pure and Applied Mathematics Hugo Steinhaus Center Wroclaw University of Science and Technology Wroclaw Poland Department of Electrical and Computer Engineering Colorado State University Fort CollinsCO80523 United States PhyLife Department of Physics Chemistry and Pharmacy University of Southern Denmark Odense MDK-5230 Denmark Institut Pasteur Decision and Bayesian Computation Lab Paris France Center for Ai and Natural Sciences Korea Institute for Advanced Study Seoul Korea Republic of Institute for Physics and Astronomy University of Potsdam Karl-Liebknecht-Str 24/25 Potsdam-GolmD-14476 Germany Sackler Center for Computational Molecular and Materials Science Tel Aviv University Tel Aviv69978 Israel School of Mechanical Engineering Tel Aviv University Tel Aviv69978 Israel Institut Pasteur Decision and Bayesian Computation Lab Paris France Department of Physics Research Center Optimas Technische Universität Kaiserslautern Kaiserslautern67663 Germany Icrea Pg. Lluís Companys 23 Barcelona08010 Spain C. de la Laura 13 Vic08500 Spain

Deviations from Brownian motion leading to anomalous diffusion are ubiquitously found in transport dynamics, playing a crucial role in phenomena from quantum physics to life sciences. The detection and characterization of anomalous diffusion from the measurement of an individual trajectory are challenging tasks, which traditionally rely on calculating the mean squared displacement of the trajectory. However, this approach breaks down for cases of important practical interest, e.g., short or noisy trajectories, ensembles of heterogeneous trajectories, or non-ergodic processes. Recently, several new approaches have been proposed, mostly building on the ongoing machine-learning revolution. Aiming to perform an objective comparison of methods, we gathered the community and organized an open competition, the Anomalous Diffusion challenge (AnDi). Participating teams independently applied their own algorithms to a commonly-defined dataset including diverse conditions. Although no single method performed best across all scenarios, the results revealed clear differences between the various approaches, providing practical advice for users and a benchmark for developers. Copyright © 2021, The Authors. All rights reserved.

关键词： Trajectories

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The Atacama Cosmology Telescope: Probing the baryon content of SDSS DR15 galaxies with the thermal and kinematic Sunyaev-Zel’dovich effects

arXiv

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arXiv 2021年

作者： Vavagiakis, Eve M. Gallardo, Patricio A. Calafut, Victoria Amodeo, Stefania Aiola, Simone Austermann, Jason E. Battaglia, Nicholas Battistelli, Elia S. Beall, James A. Bean, Rachel Bond, J. Richard Calabrese, Erminia Choi, Steve K. Cothard, Nicholas F. Devlin, Mark J. Duell, Cody J. Duff, S.M. Duivenvoorden, Adriaan J. Dunkley, Jo Dunner, Rolando Ferraro, Simone Guan, Yilun Hill, J. Colin Hilton, G.C. Hilton, Matt Hložek, Renee Huber, Zachary B. Hubmayr, Johannes Huffenberger, Kevin M. Hughes, John P. Koopman, Brian J. Kosowsky, Arthur Li, Yaqiong Lokken, Martine Madhavacheril, Mathew McMahon, Jeff Moodley, Kavilan Naess, Sigurd Nati, Federico Newburgh, Laura B. Niemack, Michael D. Page, Lyman Partridge, Bruce Schaan, Emmanuel Schillaci, Alessandro Sifon, Cristobal Spergel, David N. Staggs, Suzanne T. Ullom, Joel N. Vale, Leila R. van Engelen, Alexander van Lanen, J. Wollack, Edward J. Xu, Zhilei Department of Physics Cornell University IthacaNY14853 United States Department of Astronomy Cornell University IthacaNY14853 United States Center for Computational Astrophysics Flatiron Institute New YorkNY10010 United States NIST Quantum Sensors Group 325 Broadway BoulderCO80305 United States Physics Department Sapienza University of Rome Piazzale Aldo Moro 5 RomeI-00185 Italy Canadian Institute for Theoretical Astrophysics University of Toronto TorontoONM5S 3H8 Canada School of Physics and Astronomy Cardiff University The Parade CardiffCF24 3AA United Kingdom Department of Applied and Engineering Physics Cornell University IthacaNY14853 United States Department of Physics and Astronomy University of Pennsylvania 209 South 33rd Street PhiladelphiaPA19104 United States Joseph Henry Laboratories of Physics Jadwin Hall Princeton University PrincetonNJ08544 United States Department of Astrophysical Sciences Peyton Hall Princeton University PrincetonNJ08544 United States Instituto de Astrofísica Centro de Astro-Ingeniería Facultad de Física Pontificia Universidad Católica de Chile Av. Vicuña Mackenna 4860 Macul Santiago7820436 Chile Lawrence Berkeley National Laboratory One Cyclotron Road BerkeleyCA94720 United States Berkeley Center for Cosmological Physics UC Berkeley CA94720 United States Department of Physics and Astronomy University of Pittsburgh PittsburghPA15260 United States Department of Physics Columbia University New YorkNY10027 United States Astrophysics Research Centre University of KwaZulu-Natal Westville Campus Durban4041 South Africa David A. Dunlap Department of Astronomy and Astrophysics University of Toronto 50 St. George St. TorontoONM5S 3H4 Canada Dunlap Institute for Astronomy and Astrophysics University of Toronto 50 St. George St. TorontoONM5S 3H4 Canada Department of Physics Florida State University TallahasseeFL32306 United States Department of Physics and Astronomy Rutgers The State

We present measurements of the average thermal Sunyaev Zel’dovich (tSZ) effect from optically selected galaxy groups and clusters at high signal-to-noise (up to 12σ) and estimate their baryon content within a 2.10 radius aperture. Sources from the Sloan Digital Sky Survey (SDSS) Baryon Oscillation Spectroscopic Survey (BOSS) DR15 catalog overlap with 3,700 sq. deg. of sky observed by the Atacama Cosmology Telescope (ACT) from 2008 to 2018 at 150 and 98 GHz (ACT DR5), and 2,089 sq. deg. of internal linear combination component-separated maps combining ACT and Planck data (ACT DR4). The corresponding optical depths, τ¯, which depend on the baryon content of the halos, are estimated using results from cosmological hydrodynamic simulations assuming an AGN feedback radiative cooling model. We estimate the mean mass of the halos in multiple luminosity bins, and compare the tSZ-based τ¯ estimates to theoretical predictions of the baryon content for a Navarro–Frenk–White profile. We do the same for τ¯ estimates extracted from fits to pairwise baryon momentum measurements of the kinematic Sunyaev-Zel’dovich effect (kSZ) for the same data set obtained in a companion paper. We find that the τ¯ estimates from the tSZ measurements in this work and the kSZ measurements in the companion paper agree within 1σ for two out of the three disjoint luminosity bins studied, while they differ by 2-3σ in the highest luminosity bin. The optical depth estimates account for one third to all of the theoretically predicted baryon content in the halos across luminosity bins. Potential systematic uncertainties are discussed. The tSZ and kSZ measurements provide a step towards empirical Compton-ȳ-¯ τ relationships to provide new tests of cluster formation and evolution models. Copyright © 2021, The Authors. All rights reserved.

关键词： Hadrons

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The Simons Observatory: Constraining inationary gravitational waves with multi-tracer B-mode delensing

arXiv

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arXiv 2021年

作者： Namikawa, Toshiya Lizancos, Anton Baleato Robertson, Naomi Sherwin, Blake D. Challinor, Anthony Alonso, David Azzoni, Susanna Baccigalupi, Carlo Calabrese, Erminia Carron, Julien Chinone, Yuji Chluba, Jens Coppi, Gabriele Errard, Josquin Fabbian, Giulio Ferraro, Simone Kalaja, Alba Lewis, Antony Madhavacheril, Mathew S. Meerburg, P. Daniel Meyers, Joel Nati, Federico Orlando, Giorgio Poletti, Davide Puglisi, Giuseppe Remazeilles, Mathieu Sehgal, Neelima Tajima, Osamu Teply, Grant Van Engelen, Alexander Wollack, Edward J. Xu, Zhilei Yu, Byeonghee Zhu, Ningfeng Zonca, Andrea Utias The University of Tokyo Chiba Kashiwa277-8583 Japan Department of Applied Mathematics and Theoretical Physics University of Cambridge Wilberforce Road CambridgeCB3 0WA United Kingdom Institute of Astronomy Madingley Road CambridgeCB3 0HA United Kingdom Kavli Institute for Cosmology Cambridge Madingley Road CambridgeCB3 0HA United Kingdom Berkeley Center for Cosmological Physics Department of Physics University of California BerkeleyCA94720 United States Lawrence Berkeley National Laboratory One Cyclotron Road BerkeleyCA94720 United States Department of Physics University of Oxford Denys Wilkinson Building Keble Road OxfordOX1 3RH United Kingdom Via Bonomea 265 Trieste34136 Italy Grignano34151 Italy Sezione di Trieste Via Valerio 2 TriesteI-34127 Italy School of Physics and Astronomy Cardiff University The Parade Wales CardiffCF24 3AA United Kingdom Université de Genève Département de Physique Théorique Cap 24 Quai Ansermet Genève 4CH-1211 Switzerland Research Center for the Early Universe School of Science The University of Tokyo Tokyo113-0033 Japan Jodrell Bank Centre for Astrophysics Department of Physics and Astronomy University of Manchester Alan Turing Building Oxford Road ManchesterM13 9PL United Kingdom Department of Physics University of Milano-Bicocca Piazza della Scienza 3 Milano20126 Italy Université de Paris Cnrs Astroparticule et Cosmologie ParisF-75013 France Center for Computational Astrophysics Flatiron Institute 162 5th Avenue New YorkNY10010 United States Van Swinderen Institute for Particle Physics and Gravity University of Groningen Nijen- borgh 4 Groningen9747 AG Netherlands Department of Physics & Astronomy University of Sussex BrightonBN1 9QH United Kingdom Centre for the Universe Perimeter Institute ON WaterlooN2L 2Y5 Canada Department of Physics and Astronomy University of Southern California Los AngelesCA90007 United States Department of Physics Southern Methodist Univers

We introduce and validate a delensing framework for the Simons Observatory (SO), which will be used to improve constraints on inflationary gravitational waves (IGWs) by reducing the lensing noise in measurements of the B-modes in CMB polarization. SO will initially observe CMB by using three small aperture telescopes and one large-aperture telescope. While polarization maps from small-aperture telescopes will be used to constrain IGWs, the internal CMB lensing maps used to delens will be reconstructed from data from the large-aperture telescope. Since lensing maps obtained from the SO data will be noise-dominated on sub-degree scales, the SO lensing framework constructs a template for lensing-induced B-modes by combining internal CMB lensing maps with maps of the cosmic infrared background from Planck as well as galaxy density maps from the LSST survey. We construct a likelihood for constraining the tensor-to-scalar ratio r that contains auto- and cross-spectra between observed B-modes and the lensing B-mode template. We test our delensing analysis pipeline on map-based simulations containing survey non-idealities, but that, for this initial exploration, does not include contamination from Galactic and extragalactic foregrounds. We find that the SO survey masking and inhomogeneous and atmospheric noise have very little impact on the delensing performance, and the r constraint becomes σ(r) ≈ 0.0015 which is close to that obtained from the idealized forecasts in the absence of the Galactic foreground and is nearly a factor of two tighter than without delensing. We also find that uncertainties in the external large-scale structure tracers used in our multi-tracer delensing pipeline lead to bias much smaller than the 1 σ statistical uncertainties. © 2021, CC BY.

关键词： Observatories

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