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arXiv 2020年

作者： Amiri, M. Andersen, B.C. Bandura, K.M. Bhardwaj, M. Boyle, P.J. Brar, C. Chawla, P. Chen, T. Cliche, J.F. Cubranic, D. Deng, M. Denman, N.T. Dobbs, M. Dong, F.Q. Fandino, M. Fonseca, E. Gaensler, B.M. Giri, U. Good, D.C. Halpern, M. Hessels, J.W.T. Hill, A.S. Höfer, C. Josephy, A. Kania, J.W. Karuppusamy, R. Kaspi, V.M. Keimpema, A. Kirsten, F. Landecker, T.L. Lang, D.A. Leung, C. Li, D.Z. Lin, H.-H. Marcote, B. Masui, K.W. McKinven, R. Mena-Parra, J. Merryfield, M. Michilli, D. Milutinovic, N. Mirhosseini, A. Naidu, A. Newburgh, L.B. Ng, C. Nimmo, K. Paragi, Z. Patel, C. Pen, U.-L. Pinsonneault-Marotte, T. Pleunis, Z. Rafiei-Ravandi, M. Rahman, M. Ransom, S.M. Renard, A. Sanghavi, P. Scholz, P. Shaw, J.R. Shin, K. Siegel, S.R. Singh, S. Smegal, R.J. Smith, K.M. Stairs, I.H. Tendulkar, S.P. Tretyakov, I. Vanderlinde, K. Wang, H. Wang, X. Wulf, D. Yadav, P. Zwaniga, A.V. Department of Physics and Astronomy University of British Columbia 6224 Agricultural Road VancouverBCV6T 1Z1 Canada Department of Physics McGill University 3600 rue University MontréalQCH3A 2T8 Canada McGill Space Institute McGill University 3550 rue University MontréalQCH3A 2A7 Canada CSEE West Virginia University MorgantownWV26505 United States Center for Gravitational Waves and Cosmology West Virginia University MorgantownWV26505 United States MIT Kavli Institute for Astrophysics and Space Research Massachusetts Institute of Technology 77 Massachusetts Ave CambridgeMA02139 United States Central Development Laboratory National Radio Astronomy Observatory 1180 Boxwood Estate Road CharlottesvilleVA22903 United States Dunlap Institute for Astronomy & Astrophysics University of Toronto 50 St. George Street TorontoONM5S 3H4 Canada David A. Dunlap Department of Astronomy & Astrophysics University of Toronto 50 St. George Street TorontoONM5S 3H4 Canada Perimeter Institute for Theoretical Physics 31 Caroline Street N WaterlooONN2L 2Y5 Canada Department of Physics and Astronomy University of Waterloo WaterlooONN2L 3G1 Canada ASTRON Netherlands Institute for Radio Astronomy Oude Hoogeveensedijk 4 PD Dwingeloo7991 Netherlands Anton Pannekoek Institute for Astronomy University of Amsterdam Science Park 904 Amsterdam1098 XH Netherlands Department of Computer Science Math Physics and Statistics University of British Columbia 3187 University Way KelownaBCV1V 1V7 Canada Dominion Radio Astrophysical Observatory Herzberg Research Centre for Astronomy and Astrophysics National Research Council Canada PO Box 248 PentictonBCV2A 6J9 Canada Department of Physics and Astronomy West Viriginia University MorgantownWV26505 United States Max Planck Institute for Radio Astronomy Auf dem Huegel 69 Bonn53121 Germany Oude Hoogeveensedijk 4 PD Dwingeloo7991 Netherlands Department of Space Earth and Environment Chalmers University of Technolo

Fast radio bursts (FRBs) are bright, millisecond-duration radio transients originating from extragalactic distances1. Their origin is unknown. Some FRB sources emit repeat bursts, ruling out cataclysmic origins for those events2-4. Despite searches for periodicity in repeat burst arrival times on time scales from milliseconds to many days2, 5-7, these bursts have hitherto been observed to appear sporadically, and though clustered8, without a regular pattern. Here we report the detection of a 16.35 ± 0.18 day periodicity (or possibly a higher frequency alias of that periodicity) from a repeating FRB 180916.J0158+65 detected by the Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst Project (CHIME/FRB) 4, 9. In 28 bursts recorded from 16th September 2018 through 30th October 2019, we find that bursts arrive in a 4.0-day phase window, with some cycles showing no bursts, and some showing multiple bursts, within CHIME's limited daily exposure. Our results suggest a mechanism for periodic modulation either of the burst emission itself, or through external amplification or absorption, and disfavour models invoking purely sporadic processes. Copyright © 2020, The Authors. All rights reserved.

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Standardised formats and open-source analysis tools for the MAGIC telescopes data

arXiv

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arXiv 2024年

作者： Abe, S. Abhir, J. Abhishek, A. Acciari, V.A. Aguasca-Cabot, A. Agudo, I. Aniello, T. Ansoldi, S. Antonelli, L.A. Engels, A. Arbet Arcaro, C. Artero, M. Asano, K. Babić, A. de Almeida, U. Barres Barrio, J.A. Batković, I. Bautista, A. Baxter, J. González, J. Becerra Bednarek, W. Bernardini, E. Bernete, J. Berti, A. Besenrieder, J. Bigongiari, C. Biland, A. Blanch, O. Bonnoli, G. Bošnjak, Ž. Bronzini, E. Burelli, I. Busetto, G. Campoy-Ordaz, A. Carosi, A. Carosi, R. Carretero-Castrillo, M. Castro-Tirado, A.J. Cerasole, D. Ceribella, G. Chai, Y. Cifuentes, A. 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. de Menezes, R. Delfino, M. Delgado, J. Di Pierro, F. Di Tria, R. Di Venere, L. Prester, D. Dominis Donini, A. Dorner, D. Doro, M. Elsaesser, D. Escudero, J. Fariña, L. Fattorini, A. Foffano, L. Font, L. Fröse, S. Fukami, S. Fukazawa, Y. López, R.J. García Garczarczyk, M. Gasparyan, S. Gaug, M. Paiva, J.G. Giesbrecht Giglietto, N. Giordano, F. Gliwny, P. Gradetzke, T. Grau, R. Green, D. Green, J.G. Günther, P. Hadasch, D. Hahn, A. Hassan, T. Heckmann, L. Llorente, J. Herrera Hrupec, D. Hütten, M. Imazawa, R. Ishio, K. Martínez, I. Jiménez Jormanainen, J. Kayanoki, T. Kerszberg, D. Kluge, G.W. Kobayashi, Y. Kouch, P.M. Kubo, H. Kushida, J. Láinez, M. Lamastra, A. Leone, F. Lindfors, E. Lombardi, S. Longo, F. López-Coto, R. López-Moya, M. López-Oramas, A. Loporchio, S. Lorini, A. Lyard, E. de Oliveira Fraga, B. Machado Majumdar, P. Makariev, M. Maneva, G. Manganaro, M. Mangano, S. Mannheim, K. Mariotti, M. Martínez, M. Martínez-Chicharro, M. Mas-Aguilar, A. Mazin, D. Menchiari, S. Mender, S. Miceli, D. Miener, T. Miranda, J.M. Mirzoyan, R. González, M. Molero Molina, E. Mondal, H.A. Moralejo, A. Morcuende, D. Nakamori, T. Nanci, C. Neustroev, V. Nickel, L. Rosillo, M. Nievas Nigro, C. Nikolić, L. Nishijima, K. Ekoume, T. Njoh Noda, K. Nozaki, S. Ohtani, Y. Okumura, A. Otero-Santos, J. The University of Tokyo Chiba Kashiwa277-8582 Japan ETH Zürich ZürichCH-8093 Switzerland Università di Siena INFN Pisa SienaI-53100 Italy Bellaterra BarcelonaE-08193 Spain Universitat de Barcelona ICCUB IEEC-UB BarcelonaE-08028 Spain Instituto de Astrofísica de Andalucía-CSIC Glorieta de la Astronomía s/n Granada18008 Spain RomeI-00136 Italy Università di Udine INFN Trieste UdineI-33100 Italy Max-Planck-Institut für Physik GarchingD-85748 Germany Università di Padova INFN PadovaI-35131 Italy Zagreb10000 Croatia URCA RJ Rio de Janeiro22290-180 Brazil IPARCOS Institute EMFTEL Department Universidad Complutense de Madrid MadridE-28040 Spain Instituto de Astrofísica de Canarias Dpto. de Astrofísica Universidad de La Laguna La Laguna TenerifeE-38200 Spain 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 INFN MAGIC Group INFN Sezione di Bari Dipartimento Interateneo di Fisica dell’Università e del Politecnico di Bari BariI-70125 Italy Department for Physics and Technology University of Bergen Norway INFN MAGIC Group INFN Sezione di Torino Università degli Studi di Torino TorinoI-10125 Italy Croatian MAGIC Group University of Rijeka Faculty of Physics Rijeka51000 Croatia Universität Würzburg WürzburgD-97074 Germany Technische Universität Dortmund DortmundD-44221 Germany Japanese MAGIC Group: Physics Program Graduate School of Advanced Science and Engineering Hiroshima University Hiroshima739-8526 Japan ZeuthenD-15738 Germany Armenian MAGIC Group: ICRANet-Armenia Yerevan0019 Armenia Croatian MAGIC Group Josip Juraj Strossmayer University of Osijek Department of Physics Osijek31000 Croatia Finnish MAGIC Group Finnish Cent

Instruments for gamma-ray astronomy at Very High Energies (E > 100 GeV) have traditionally derived their scientific results through proprietary data and software. Data standardisation has become a prominent issue in this field both as a requirement for the dissemination of data from the next generation of gamma-ray observatories and as an effective solution to realise public data legacies of current-generation instruments. Specifications for a standardised gamma-ray data format have been proposed as a community effort and have already been successfully adopted by several instruments. We present the first production of standardised data from the Major Atmospheric Gamma-ray Imaging Cherenkov (MAGIC) telescopes. We converted 166 h of observations from different sources and validated their analysis with the open-source software Gammapy. We consider six data sets representing different scientific and technical analysis cases and compare the results obtained analysing the standardised data with open-source software against those produced with the MAGIC proprietary data and software. Aiming at a systematic production of MAGIC data in this standardised format, we also present the implementation of a database-driven pipeline automatically performing the MAGIC data reduction from the calibrated down to the standardised data level. In all the cases selected for the validation, we obtain results compatible with the MAGIC proprietary software, both for the manual and for the automatic data productions. Part of the validation data set is also made publicly available, thus representing the first large public release of MAGIC data. This effort and this first data release represent a technical milestone toward the realisation of a public MAGIC data legacy. © 2024, CC BY.

关键词： Cosmology

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Constraints on Lorentz invariance violation from the extraordinary Mrk 421 flare of 2014 using a novel analysis method

arXiv

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arXiv 2024年

作者： Abe, S. Abhir, J. Abhishek, A. Acciari, V.A. Aguasca-Cabot, A. Agudo, I. Aniello, T. Ansoldi, S. Antonelli, L.A. Engels, A. Arbet Arcaro, C. Artero, M. Asano, K. Babić, A. Baquero, A. de Almeida, U. Barres Barrio, J.A. Batković, I. Bautista, A. Baxter, J. González, J. Becerra Bednarek, W. Bernardini, E. Bernete, J. Berti, A. Besenrieder, J. Bigongiari, C. Biland, A. Blanch, O. Bonnoli, G. Bošnjak, Ž. Bronzini, E. Burelli, I. Busetto, G. Campoy-Ordaz, A. Carosi, A. Carosi, R. Carretero-Castrillo, M. Castro-Tirado, A.J. Cerasole, D. Ceribella, G. Chai, Y. Cifuentes, A. 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. de Menezes, R. Del Popolo, A. Delfino, M. Delgado, J. Mendez, C. Delgado Di Pierro, F. Di Tria, R. Di Venere, L. Prester, D. Dominis 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. López, R.J. García Garczarczyk, M. Gasparyan, S. Gaug, M. Paiva, J.G. Giesbrecht Giglietto, N. Giordano, F. Gliwny, P. Godinović, N. Gradetzke, T. Grau, R. Green, D. Green, J.G. Günther, P. Hadasch, D. Hahn, A. Hassan, T. Heckmann, L. Herrera, J. Hrupec, D. Hütten, M. Imazawa, R. Ishio, K. Martínez, I. Jiménez Jormanainen, J. Kayanoki, T. Kerszberg, D. Kluge, G.W. Kobayashi, Y. Kouch, P.M. Kubo, H. Kushida, J. Láinez, M. Lamastra, A. Leone, F. Lindfors, E. Linhoff, L. Lombardi, S. Longo, F. López-Coto, R. López-Moya, M. López-Oramas, A. Loporchio, S. Lorini, A. Lyard, E. de Oliveira Fraga, B. Machado Majumdar, P. Makariev, M. Maneva, G. Manganaro, M. Mangano, S. Mannheim, K. Mariotti, M. Martínez, M. Martínez-Chicharro, M. Mas-Aguilar, A. Mazin, D. Menchiari, S. Mender, S. Miceli, D. Miener, T. Miranda, J.M. Mirzoyan, R. González, M. Molero Molina, E. Mondal, H.A. Moralejo, A. Morcuende, D. Nakamori, T. Nanci, C. Neustroev, V. Nickel, L. Rosillo, M. Nievas Nigro, C. Nikolić, L. The University of Tokyo Chiba Kashiwa277-8582 Japan ETH Zürich ZürichCH-8093 Switzerland Università di Siena INFN Pisa SienaI-53100 Italy Instituto de Astrofísica de Canarias and Dpto. de Astrofísica Universidad de La Laguna Tenerife La LagunaE-38200 Spain Universitat de Barcelona ICCUB IEEC-UB BarcelonaE-08028 Spain Instituto de Astrofísica de Andalucía-CSIC Glorieta de la Astronomía s/n Granada18008 Spain RomeI-00136 Italy Università di Udine INFN Trieste UdineI-33100 Italy Max-Planck-Institut für Physik GarchingD-85748 Germany Università di Padova INFN PadovaI-35131 Italy Bellaterra BarcelonaE-08193 Spain 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 INFN MAGIC Group INFN Sezione di Bari Dipartimento Interateneo di Fisica dell’Università e del Politecnico di Bari BariI-70125 Italy Department for Physics and Technology University of Bergen Norway INFN MAGIC Group INFN Sezione di Torino Università degli Studi di Torino TorinoI-10125 Italy INFN MAGIC Group INFN Sezione di Catania Dipartimento di Fisica e Astronomia University of Catania CataniaI-95123 Italy Croatian MAGIC Group University of Rijeka Faculty of Physics Rijeka51000 Croatia Universität Würzburg WürzburgD-97074 Germany Technische Universität Dortmund DortmundD-44221 Germany University of Geneva Chemin d’Ecogia 16 VersoixCH-1290 Switzerland Japanese MAGIC Group: Physics Program Graduate School of Advanced Science and Engineering Hiroshima University Hiroshima739-8526 Japan ZeuthenD-15738 Germany Armenia

The Lorentz Invariance Violation (LIV), a proposed consequence of certain quantum gravity (QG) scenarios, could instigate an energy-dependent group velocity for ultra-relativistic particles. This energy dependence, although suppressed by the massive QG energy scale EQG, expected to be on the level of the Planck energy 1.22 × 1019 GeV, is potentially detectable in astrophysical observations. In this scenario, the cosmological distances traversed by photons act as an amplifier for this effect. By leveraging the observation of a remarkable flare from the blazar Mrk 421, recorded at energies above 100 GeV by the MAGIC telescopes on the night of April 25 to 26, 2014, we look for time delays scaling linearly and quadratically with the photon energies. Using for the first time in LIV studies a binned-likelihood approach we set constraints on the QG energy scale. For the linear scenario, we set 95% lower limits EQG > 2.7×1017 GeV for the subluminal case and EQG > 3.6×1017 GeV for the superluminal case. For the quadratic scenario, the 95% lower limits for the subluminal and superluminal cases are EQG > 2.6 × 1010 GeV and EQG > 2.5 × 1010 GeV, respectively. Copyright © 2024, The Authors. All rights reserved.

关键词： Gamma rays

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Correction: Role of integrin-linked kinase in regulating the protein stability of the MUC1-C oncoprotein in pancreatic cancer cells

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Oncogenesis 2020年第2期9卷 27页

作者： H-L Huang H-Y Wu P-C Chu I-L Lai P-H Huang S K Kulp S-L Pan C-M Teng C-S Chen The PhD Program for Cancer Biology and Drug Discovery College of Medical Science and Technology Taipei Medical University Taipei Taiwan. Division of Medicinal Chemistry and Pharmacognosy College of Pharmacy The Ohio State University Columbus OH USA. Institute of Biological Chemistry Academia Sinica Taipei Taiwan. Institute of Biochemical Science National Taiwan University Taipei Taiwan. Epigenome Research Center China Medical University Hospital Taichung Taiwan. Department of Biochemistry and Molecular Biology College of Medicine National Cheng Kung University Tainan Taiwan. Department of Pharmacology College of Medicine Taipei Medical University Taipei Taiwan. Pharmacological Institute College of Medicine National Taiwan University Taipei Taiwan. Division of Medicinal Chemistry and Pharmacognosy College of Pharmacy The Ohio State University Columbus OH USA. chencs@gate.sinica.edu.tw. Institute of Biological Chemistry Academia Sinica Taipei Taiwan. chencs@gate.sinica.edu.tw.

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

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Joint analysis of DES Year 3 data and CMB lensing from SPT and Planck III: Combined cosmological constraints

arXiv

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arXiv 2022年

作者： Abbott, T.M.C. Aguena, M. Alarcon, A. Alves, O. Amon, A. Andrade-Oliveira, F. Annis, J. Ansarinejad, B. Avila, S. Bacon, D. Baxter, Eric J. Bechtol, K. Becker, M.R. Benson, B.A. Bernstein, G.M. Bertin, E. Blazek, J. Bleem, L.E. Bocquet, S. Brooks, D. Buckley-Geer, E. Burke, D.L. Camacho, H. Campos, A. Carlstrom, J.E. Carnero Rosell, A. Carrasco Kind, M. Carretero, J. Cawthon, R. Chang, C. Chang, C.L. Chen, R. Choi, A. Chown, R. Conselice, C. Cordero, J. Costanzi, M. Crawford, T. Crites, A.T. Crocce, M. da Costa, L.N. Davis, C. Davis, T.M. de Haan, T. De Vicente, J. DeRose, J. Desai, S. Diehl, H.T. Dobbs, M.A. Dodelson, S. Doel, P. Doux, C. Drlica-Wagner, A. Eckert, K. Eifler, T.F. Elsner, F. Elvin-Poole, J. Everett, S. Everett, W. Fang, X. Ferrero, I. Ferté, A. Flaugher, B. Fosalba, P. Friedrich, O. Frieman, J. García-Bellido, J. Gatti, M. George, E.M. Giannantonio, T. Giannini, G. Gruen, D. Gruendl, R.A. Gschwend, J. Gutierrez, G. Halverson, N.W. Harrison, I. Herner, K. Hinton, S.R. Holder, G.P. Hollowood, D.L. Holzapfel, W.L. Honscheid, K. Hrubes, J.D. Huang, H. Huff, E.M. Huterer, D. Jain, B. James, D.J. Jarvis, M. Jeltema, T. Kent, S. Knox, L. Kovacs, A. Krause, E. Kuehn, K. Kuropatkin, N. Lahav, O. Lee, A.T. Leget, P.-F. Lemos, P. Liddle, A.R. Lidman, C. Luong-Van, D. McMahon, J.J. MacCrann, N. March, M. Marshall, J.L. Martini, P. McCullough, J. Melchior, P. Menanteau, F. Meyer, S.S. Miquel, R. Mocanu, L. Mohr, J.J. Morgan, R. Muir, J. Myles, J. Natoli, T. Navarro-Alsina, A. Nichol, R.C. Omori, Y. Padin, S. Pandey, S. Park, Y. Paz-Chinchón, F. Pereira, M.E.S. Pieres, A. Plazas Malagón, A.A. Porredon, A. Prat, J. Pryke, C. Raveri, M. Reichardt, C.L. Rollins, R.P. Romer, A.K. Roodman, A. Rosenfeld, R. Ross, A.J. Ruhl, J.E. Rykoff, E.S. Sánchez, C. Sanchez, E. Sanchez, J. Schaffer, K.K. Secco, L.F. Sevilla-Noarbe, I. Sheldon, E. Shin, T. Shirokoff, E. Cerro Tololo Inter-American Observatory NSF’s National Optical-Infrared Astronomy Research Laboratory Casilla 603 La Serena Chile Laboratório Interinstitucional de e-Astronomia - LIneA Rua Gal. José Cristino 77 RJ Rio de Janeiro20921-400 Brazil Argonne National Laboratory 9700 South Cass Avenue LemontIL60439 United States Department of Physics University of Michigan Ann ArborMI48109 United States Institute of Astronomy University of Cambridge Madingley Road CambridgeCB3 0HA United Kingdom Kavli Institute for Cosmology University of Cambridge Madingley Road CambridgeCB3 0HA United Kingdom Fermi National Accelerator Laboratory P. O. Box 500 BataviaIL60510 United States School of Physics University of Melbourne ParkvilleVIC3010 Australia Instituto de Fisica Teorica UAM CSIC Universidad Autonoma de Madrid Madrid28049 Spain Institute of Cosmology and Gravitation University of Portsmouth PortsmouthPO1 3FX United Kingdom Institute for Astronomy University of Hawai’i 2680 Woodlawn Drive HonoluluHI96822 United States Physics Department University of Wisconsin-Madison 2320 Chamberlin Hall 1150 University Avenue MadisonWI53706-1390 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 and Astronomy University of Pennsylvania PhiladelphiaPA19104 United States CNRS UMR 7095 Institut d’Astrophysique de Paris ParisF-75014 France Sorbonne Universités UPMC Univ Paris 06 UMR 7095 Institut d’Astrophysique de Paris ParisF-75014 France Department of Physics Northeastern University BostonMA02115 United States High-Energy Physics Division Argonne National Laboratory 9700 South Cass Avenue ArgonneIL60439 United States University Observatory Faculty of Physics Ludwig-Maximilians-Universität Scheinerstr. 1 Munich81679 Germany Department of Physics & Astronomy University Co

We present cosmological constraints from the analysis of two-point correlation functions between galaxy positions and galaxy lensing measured in Dark Energy Survey (DES) Year 3 data and measurements of cosmic microwave background (CMB) lensing from the South Pole Telescope (SPT) and Planck. When jointly analyzing the DES-only two-point functions and the DES cross-correlations with SPT+Planck CMB lensing, we find Ωm = 0.344±0.030 and S8 ≡ σ8(Ωm/0.3)0.5 = 0.773±0.016, assuming ΛCDM. When additionally combining with measurements of the CMB lensing autospectrum, we find Ωm = 0.306+0.018−0.021 and S8 = 0.792 ± 0.012. The high signal-to-noise of the CMB lensing cross-correlations enables several powerful consistency tests of these results, including comparisons with constraints derived from cross-correlations only, and comparisons designed to test the robustness of the galaxy lensing and clustering measurements from DES. Applying these tests to our measurements, we find no evidence of significant biases in the baseline cosmological constraints from the DES-only analyses or from the joint analyses with CMB lensing cross-correlations. However, the CMB lensing cross-correlations suggest possible problems with the correlation function measurements using alternative lens galaxy samples, in particular the redMaGiC galaxies and high-redshift MagLim galaxies, consistent with the findings of previous studies. We use the CMB lensing cross-correlations to identify directions for further investigating these problems. Copyright © 2022, The Authors. All rights reserved.

关键词： Galaxies

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Evidence for Late-stage Eruptive Mass-loss in the Progenitor to SN2018gep, a Broad-lined Ic Supernova: Pre-explosion Emission and a Rapidly Rising Luminous Transient

arXiv

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arXiv 2019年

作者： Ho, Anna Y.Q. Goldstein, Daniel A. Schulze, Steve Khatami, David K. Perley, Daniel A. Ergon, Mattias Gal-Yam, Avishay Corsi, Alessandra Andreoni, Igor Barbarino, Cristina Bellm, Eric C. Blagorodnova, Nadia Bright, Joe S. Burns, E. Cenko, S. Bradley Cunningham, Virginia De, Kishalay Dekany, Richard Dugas, Alison Fender, Rob P. Fransson, Claes Fremling, Christoffer Goldstein, Adam Graham, Matthew J. Hale, David Horesh, Assaf Hung, Tiara Kasliwal, Mansi M. M. Kuin, N. Paul Kulkarni, S.R. Kupfer, Thomas Lunnan, Ragnhild Masci, Frank J. Ngeow, Chow-Choong Nugent, Peter E. Ofek, Eran O. Patterson, Maria T. Petitpas, Glen Rusholme, Ben Sai, Hanna Sfaradi, Itai Shupe, David L. Sollerman, Jesper Soumagnac, Maayane T. Tachibana, Yutaro Taddia, Francesco Walters, Richard Wang, Xiaofeng Yao, Yuhan Zhang, Xinhan Cahill Center for Astrophysics California Institute of Technology MC 249-17 1200 E California Boulevard PasadenaCA91125 United States Department of Particle Physics and Astrophysics Weizmann Institute of Science 234 Herzl St Rehovot76100 Israel Department of Astronomy University of California BerkeleyCA94720 United States Astrophysics Research Institute Liverpool John Moores University IC2 Liverpool Science Park 146 Brownlow Hill LiverpoolL3 5RF United Kingdom The Oskar Klein Centre & Department of Astronomy Stockholm University AlbaNova StockholmSE-106 91 Sweden Department of Physics and Astronomy Texas Tech University Box 1051 LubbockTX79409-1051 United States DIRAC Institute Department of Astronomy University of Washington 3910 15th Avenue NE SeattleWA98195 United States Department of Astrophysics IMAPP Radboud University Nijmegen Netherlands Department of Physics University of Oxford Denys Wilkinson Building Keble Road OxfordOX1 3RH United Kingdom NASA Postdoctoral Program Fellow Goddard Space Flight Center GreenbeltMD20771 United States Astrophysics Science Division NASA Goddard Space Flight Center Mail Code 661 GreenbeltMD20771 United States Joint Space-Science Institute University of Maryland College ParkMD20742 United States Astronomy Department University of Maryland College ParkMD20742 United States Caltech Optical Observatories California Institute of Technology MC 11-17 1200 E. California Blvd. PasadenaCA91125 United States Division of Physics Mathematics and Astronomy California Institute of Technology PasadenaCA91125 United States Science and Technology Institute Universities Space Research Association HuntsvilleAL35805 United States Racah Institute of Physics Hebrew University Jerusalem91904 Israel Department of Astronomy and Astrophysics University of California Santa CruzCA95064 United States Mullard Space Science Laboratory University College London Holmbury St. Mary Dorking SurreyRH5 6NT Un

We present detailed observations of ZTF18abukavn (SN2018gep), discovered in high-cadence data from the Zwicky Transient Facility as a rapidly rising (1.4 ±0.1 mag/hr) and luminous (Mg,peak = −20 mag) transient. It is spectroscopically classified as a broad-lined stripped-envelope supernova (Ic-BL SN). The high peak luminosity (Lbol & 3×1044 erg s−1), the short rise time (trise = 3 day in g-band), and the blue colors at peak (g−r ∼ −0.4) all resemble the high-redshift Ic-BL iPTF16asu, as well as several other unclassified fast transients. The early discovery of SN2018gep (within an hour of shock breakout) enabled an intensive spectroscopic campaign, including the highest-temperature (Teff & 40, 000K) spectra of a stripped-envelope SN. A retrospective search revealed luminous (Mg ∼ Mr ≈ −14 mag) emission in the days to weeks before explosion, the first definitive detection of precursor emission for a Ic-BL. We find a limit on the isotropic gamma-ray energy release Eγ,iso 10 day) light curve requires an additional energy source, which could be the radioactive decay of Ni-56. Copyright © 2019, The Authors. All rights reserved.

关键词： Shock waves

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Investigating the Nature of the Luminous Ambiguous Nuclear Transient ASASSN-17jz

arXiv

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arXiv 2021年

作者： Holoien, Thomas W.-S. Neustadt, Jack M.M. Vallely, Patrick J. Auchettl, Katie Hinkle, Jason T. Romero-Cañizales, Cristina Shappee, Benjamin J. Kochanek, Christopher S. Stanek, K.Z. Chen, Ping Dong, Subo Prieto, Jose L. Thompson, Todd A. Brink, Thomas G. Filippenko, Alexei V. Zheng, Weikang Bersier, David Bose, Subhash Burgasser, Adam J. Channa, Sanyum De Jaeger, Thomas Hestenes, Julia Im, Myungshin Jeffers, Benjamin Jun, Hyunsung D. Lansbury, George Post, Richard S. Ross, Timothy W. Stern, Daniel Tang, Kevin Tucker, Michael A. Valenti, Stefano Yunus, Sameen Zhang, Keto D. The Observatories of the Carnegie Institution for Science 813 Santa Barbara St. PasadenaCA91101 United States Department of Astronomy The Ohio State University 140 West 18th Avenue ColumbusOH43210 United States School of Physics The University of Melbourne ParkvilleVIC3010 Australia Department of Astronomy and Astrophysics University of California Santa CruzCA95064 United States Institute for Astronomy University of Hawai'i 2680 Woodlawn Drive HonoluluHI96822 United States Institute of Astronomy and Astrophysics Academia Sinica 11F of Astronomy-Mathematics Building AS/NTU No. 1 Roosevelt Rd Taipei10617 Taiwan The Ohio State University 191 W. Woodruff Ave. ColumbusOH43210 United States Kavli Institute for Astronomy and Astrophysics Peking University Yi He Yuan Road 5 Hai Dian District Beijing100871 China Núcleo de Astronomía de la Facultad de Ingeniería y Ciencias Universidad Diego Portales Av. Ejército 441 Santiago Chile Millennium Institute of Astrophysics Santiago Chile Department of Astronomy University of California BerkeleyCA94720-3411 United States Miller Institute for Basic Research in Science University of California BerkeleyCA94720 United States Astrophysics Research Institute Liverpool John Moores University 146 Brownlow Hill LiverpoolL3 5RF United Kingdom Center for Astrophysics and Space Sciences University of California San Diego La Jolla CA92093 United States Department of Applied Physics and Applied Mathematics Columbia University New YorkNY10027-6623 United States SNU Astronomy Research Center Astronomy Program Dept. of Physics and Astronomy Seoul National University Seoul08826 Korea Republic of School of Physics Korea Institute for Advanced Study 85 Hoegiro Dongdaemun-gu Seoul02455 Korea Republic of European Southern Observatory Karl-Schwarzschild-Strasse 2 GarchingD-85748 Germany Post Observatory LexingtonMA02421 United States Jet Propulsion Laboratory California Institute of Technology 4800 Oa

We present observations of the extremely luminous but ambiguous nuclear transient (ANT) ASASSN-17jz, spanning roughly 1200 days of the object's evolution. ASASSN-17jz was discovered by the All-Sky Automated Survey for Supernovae (ASAS-SN) in the galaxy SDSS J171955.84+414049.4 on UT 2017 July 27 at a redshift of z = 0:1641. The transient peaked at an absolute B-band magnitude of MB,peak=-22:81, corresponding to a bolometric luminosity of Lbol,peak= 8.3×1044erg s-1, and exhibited late-time ultraviolet emission that was still ongoing in our latest observations. Integrating the full light curve gives a total emitted energy of Etot= (1.36±0.08)×1052erg, with (0.80±0.02)×1052erg of this emitted within 200 days of peak light. This late-time ultraviolet emission is accompanied by increasing X-ray emission that becomes softer as it brightens. ASASSN-17jz exhibited a large number of spectral emission lines most commonly seen in active galactic nuclei (AGNs) with little evidence of evolution. It also showed transient Balmer features which became fainter and broader over time, and are still being detected > 1000 days after peak brightness. We consider various physical scenarios for the origin of the transient, including supernovae (SNe), tidal disruption events (TDEs), AGN outbursts, and ANTs. We find that the most likely explanation is that ASASSN-17jz was an SN IIn occurring in or near the disk of an existing AGN, and that the late-time emission is caused by the AGN transitioning to a more active state. Copyright © 2021, The Authors. All rights reserved.

关键词： Supernovae

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Innentitelbild: Diels–Alder Conversion of Acrylic Acid and 2,5-Dimethylfuran topara-Xylene Over Heterogeneous Bi-BTC Metal-Organic Framework Catalysts Under Mild Conditions (Angew. Chem. 2/2021)

引用

Angewandte Chemie 2020年第2期133卷

作者： Jyun-Yi Yeh Season S. Chen Shih-Cheng Li Celine H. Chen Dr. Tetsuya Shishido Dr. Daniel C. W. Tsang Dr. Yusuke Yamauchi Yi-Pei Li Prof. Kevin C.-W. Wu International Graduate Program of Molecular Science and Technology (NTU-MST) National Taiwan University No. 1 Sec. 4 Roosevelt Road Taipei 10617 Taiwan Taiwan International Graduate Program (TIGP) Academia Sinica No. 128 Sec. 2 Academia Road Taipei 11529 Taiwan Department of Chemical Engineering National (Taiwan) University No. 1 Sec. 4 Roosevelt Road Taipei 10617 Taiwan School of Engineering Brown University Providence RI 02912 USA Department of Applied Chemistry for Environment Tokyo Metropolitan University 1-1 Minami-osawa Hachioji Tokyo 192-0397 Japan Department of Civil and Environmental Engineering The Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong China JST-ERATO Yamauchi Materials Space-Tectonics Project Kagami Memorial Research Institute for Materials Science and Technology Waseda University 2-8-26 Nishiwaseda Shinjuku-ku Tokyo 169-0051 Japan Australian Institute for Bioengineering and Nanotechnology (AIBN) School of Chemical Engieering The University of Queensland Brisbane QLD 4072 Australia Center of Atomic Initiative for New Materials National Taiwan University No. 1 Sec. 4 Roosevelt Road Taipei 10617 Taiwan

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Refined mass and geometric measurements of the high-mass PSR J0740+6620

arXiv

引用

arXiv 2021年

作者： Fonseca, Emmanuel Thankful Cromartie, H. Pennucci, Timothy T. Ray, Paul S. Kirichenko, Aida Yu. Ransom, Scott M. Demorest, Paul B. Stairs, Ingrid H. Arzoumanian, Zaven Guillemot, Lucas Parthasarathy, Aditya Kerr, Matthew Cognard, Ismael Baker, Paul T. Blumer, Harsha Brook, Paul R. DeCesar, Megan Dolch, Timothy Adam Dong, F. Ferrara, Elizabeth C. Fiore, William Garver-Daniels, Nathaniel Good, Deborah C. Jennings, Ross Jones, Megan L. Kaspi, Victoria M. Lam, Michael T. Lorimer, Duncan R. Luo, Jing McEwen, Alexander McKee, James W. McLaughlin, Maura A. McMann, Natasha Meyers, Bradley W. Naidu, Arun Ng, Cherry Nice, David J. Pol, Nihan Radovan, Henri A. Shapiro-Albert, Brent Tan, Chia Min Tendulkar, Shriharsh P. Swiggum, Joseph K. Wahl, Haley M. Zhu, Weiwei W. Department of Physics McGill University 3600 rue University MontréalQCH3A 2T8 Canada McGill Space Institute McGill University 3550 rue University MontréalQCH3A 2A7 Canada Department of Physics and Astronomy West Virginia University MorgantownWV26506-6315 United States Center for Gravitational Waves and Cosmology Chestnut Ridge Research Building MorgantownWV26505 United States Cornell Center for Astrophysics and Planetary Science Department of Astronomy Cornell University IthacaNY14853 United States NASA Hubble Fellowship Program Einstein Postdoctoral Fellow National Radio Astronomy Observatory 520 Edgemont Road CharlottesvilleVA22903 United States Institute of Physics Eötvös Lorán University Pázmány P. s. 1/A Budapest1117 Hungary U.S. Naval Research Laboratory WashingtonDC20375 United States Universidad Nacional Autónoma de México Instituto de Astronomía AP 106 BC Ensenada22800 Mexico Ioffe Institute Politekhnicheskaya 26 St. Petersburg194021 Russia National Radio Astronomy Observatory P.O. Box O SocorroNM87801 United States Department of Physics & Astronomy University of British Columbia 6224 Agricultural Road VancouverBCV6T 1Z1 Canada Astrophysics Science Division Code 662 NASA Goddard Space Flight Center GreenbeltMD20771 United States Laboratoire de Physique Chimie de l'Environnement et de l'Espace Université d'Orléans CNRS Orléans Cedex 02 F-45071 France Station de radioastronomie de Nançay Observatoire de Paris CNRS INSU Nançay F-18330 France Max Planck Institute for Radio Astronomy Auf dem H"u gel 69 BonnD-53121 Germany Department of Physics and Astronomy Widener University ChesterPA19013 United States Department of Physics and Astronomy George Mason University FairfaxVA22030 United States U.S. Naval Research Laboratory WashingtonDC20375 United States Department of Physics Hillsdale College 33 E. College Street HillsdaleMI49242 United States Eureka Scientific Inc. 2452 Delmer Street Suite 100 Oakland

We report results from continued timing observations of PSR J0740+6620, a high-mass, 2.8-ms radio pulsar in orbit with a likely ultra-cool white dwarf companion. Our data set consists of combined pulse arrival-time measurements made with the 100-m Green Bank Telescope and the Canadian Hydrogen Intensity Mapping Experiment telescope. We explore the significance of timing-based phenomena arising from general-relativistic dynamics and variations in pulse dispersion. When using various statistical methods, we find that combining ∼ 1.5 years of additional, high-cadence timing data with previous measurements confirms and improves upon previous estimates of relativistic effects within the PSR J0740+6620 system, with the pulsar mass mp = 2.08+0−00707 M. (68.3% credibility) determined by the relativistic Shapiro time delay. For the first time, we measure secular variation in the orbital period and argue that this effect arises from apparent acceleration due to significant transverse motion. After incorporating contributions from Galactic differential rotation and off-plane acceleration in the Galactic potential, we obtain a model-dependent distance of d = 1.14+0−01715 kpc (68.3% credibility). This improved distance confirms the ultra-cool nature of the white dwarf companion determined from recent optical observations. We discuss the prospects for future observations with next-generation facilities, which will likely improve the precision on mp for J0740+6620 by an order of magnitude within the next few years. © 2021, CC BY.

关键词： Timing circuits

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Inside Cover: Diels–Alder Conversion of Acrylic Acid and 2,5-Dimethylfuran topara-Xylene Over Heterogeneous Bi-BTC Metal-Organic Framework Catalysts Under Mild Conditions (Angew. Chem. Int. Ed. 2/2021)

引用

Angewandte Chemie International Edition 2020年第2期60卷

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