☆ 4.7 Article

Observation of gamma-ray emission from the galaxy M87 above 250 GeV with VERITAS

ASTROPHYSICAL JOURNAL (2008)

期刊

ASTROPHYSICAL JOURNAL

卷 679, 期 1, 页码 397-403

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IOP PUBLISHING LTD

DOI: 10.1086/587458

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galaxies : individual (M87, NGC 4486, Virgo A); gamma rays : observations

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Astronomy & Astrophysics

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The multiwavelength observation of the nearby radio galaxy M87 provides a unique opportunity to study in detail processes occurring in active galactic nuclei from radio waves to TeV gamma-rays. Here we report the detection of gamma-ray emission above 250 GeV from M87 in spring 2007 with the VERITAS atmospheric Cerenkov telescope array and discuss its correlation with the X-ray emission. The gamma-ray emission is measured to be pointlike with an intrinsic source radius less than 4.5'. The differential energy spectrum is fitted well by a power-law function: d Phi/dE = (7.4 +/- 1.3(stat) +/- 1.5(sys))(E/TeV)((-2.31 +/- 0.17stat +/- 0.2sys)) 10(-9) m(-2) s(-1) TeV-1. We show strong evidence for a year-scale correlation between the gamma-ray flux reported by TeV experiments and the X-ray emission measured by the ASM RXTE observatory, and discuss the possible short-timescale variability. These results imply that the gamma-ray emission from M87 is more likely associated with the core of the galaxy than with other bright X-ray features in the jet.

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Article Astronomy & Astrophysics

Search for Gamma-Ray and Neutrino Coincidences Using HAWC and ANTARES Data

H. A. Ayala Solares, S. Coutu, D. Cowen, D. B. Fox, T. Gregoire, F. McBride, M. Mostafa, K. Murase, S. Wissel, A. Albert, S. Alves, M. Andre, M. Ardid, S. Ardid, J. -J. Aubert, J. Aublin, B. Baret, S. Basa, B. Belhorma, M. Bendahman, F. Benfenati, V. Bertin, S. Biagi, M. Bissinger, J. Boumaaza, M. Bouta, M. C. Bouwhuis, H. Branzas, R. Bruijn, J. Brunner, J. Busto, B. Caiffi, D. Calvo, A. Capone, L. Caramete, J. Carr, V. Carretero, S. Celli, M. Chabab, T. N. Chau, R. Cherkaoui El Moursli, T. Chiarusi, M. Circella, J. A. B. Coelho, A. Coleiro, R. Coniglione, P. Coyle, A. Creusot, A. F. Diaz, G. de Wasseige, B. De Martino, C. Distefano, I. Di Palma, A. Domi, C. Donzaud, D. Dornic, D. Drouhin, T. Eberl, T. van Eeden, D. van Eijk, N. El Khayati, A. Enzenhoefer, P. Fermani, G. Ferrara, F. Filippini, L. Fusco, J. Garcia, P. Gay, H. Glotin, R. Gozzini, R. Gracia Ruiz, K. Graf, C. Guidi, S. Hallmann, H. van Haren, A. J. Heijboer, Y. Hello, J. J. Hernandez-Rey, J. Hoessl, J. Hofestaedt, F. Huang, G. Illuminati, C. W. James, B. Jisse-Jung, M. de Jong, P. de Jong, M. Kadler, O. Kalekin, U. Katz, A. Kouchner, I. Kreykenbohm, V. Kulikovskiy, R. Lahmann, M. Lamoureux, R. Le Breton, D. Lefevre, E. Leonora, G. Levi, S. Le Stum, D. Lopez-Coto, S. Loucatos, L. Maderer, J. Manczak, M. Marcelin, A. Margiotta, A. Marinelli, J. A. Martinez-Mora, K. Melis, P. Migliozzi, A. Moussa, R. Muller, L. Nauta, S. Navas, E. Nezri, B. O. Fearraigh, A. Paun, G. E. Pavalas, C. Pellegrino, M. Perrin-Terrin, V. Pestel, P. Piattelli, C. Pieterse, C. Poire, V. Popa, T. Pradier, N. Randazzo, D. Real, S. Reck, G. Riccobene, A. Romanov, A. Sanchez-Losa, D. F. E. Samtleben, M. Sanguineti, P. Sapienza, J. Schnabel, J. Schumann, F. Schuessler, J. Seneca, M. Spurio, Th. Stolarczyk, M. Taiuti, Y. Tayalati, S. J. Tingay, B. Vallage, V. Van Elewyck, F. Versari, S. Viola, D. Vivolo, J. Wilms, S. Zavatarelli, A. Zegarelli, J. D. Zornoza, J. Zuniga, A. Albert, C. Alvarez, J. C. Arteaga-Velazquez, R. Babu, E. Belmont-Moreno, K. S. Caballero-Mora, T. Capistran, A. Carraminana, S. Casanova, U. Cotti, O. Chaparro-Amaro, J. Cotzomi, S. Coutino de Leon, E. de la Fuente, C. de Leon, R. Diaz Hernandez, M. A. DuVernois, M. Durocher, J. C. Diaz-Velez, K. Engel, C. Espinoza, K. L. Fan, M. Fernandez Alonso, N. Fraija, J. A. Garcia-Gonzalez, F. Garfias, M. M. Gonzalez, J. A. Goodman, J. P. Harding, S. Hernandez, D. Huang, F. Hueyotl-Zahuantitla, P. Huentemeyer, A. Iriarte, V. Joshi, S. Kaufmann, A. Lara, H. Leon Vargas, J. T. Linnemann, A. L. Longinotti, G. Luis-Raya, K. Malone, O. Martinez, I. Martinez-Castellanos, J. Martinez-Castro, J. A. Matthews, P. Miranda-Romagnoli, J. A. Morales-Soto, E. Moreno, A. Nayerhoda, L. Nellen, M. U. Nisa, R. Noriega-Papaqui, N. Omodei, A. Peisker, Y. Perez Araujo, E. G. Perez-Perez, C. D. Rho, D. Rosa-Gonzalez, E. Ruiz-Velasco, H. Salazar, F. Salesa Greus, A. Sandoval, M. Schneider, A. J. Smith, Y. Son, R. W. Springer, O. Tibolla, K. Tollefson, I. Torres, R. Torres-Escobedo, R. Turner, F. Urena-Mena, E. Varela, X. Wang, K. Whitaker, E. Willox, A. Zepeda, H. Zhou

Summary: To search for high-energy neutrino sources, the Astrophysical Multimessenger Observatory Network combined data from the HAWC Observatory and the ANTARES neutrino telescope. They performed a search for coincidences in events below the public alert threshold in each detector. Over a 4.39-year time period, three coincident events were found, consistent with background expectations.

ASTROPHYSICAL JOURNAL (2023)

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Article Astronomy & Astrophysics

Search for Ultraheavy Dark Matter from Observations of Dwarf Spheroidal Galaxies with VERITAS

A. Acharyya, A. Archer, P. Bangale, J. T. Bartkoske, P. Batista, M. Baumgart, W. Benbow, J. H. Buckley, A. Falcone, Q. Feng, J. P. Finley, G. M. Foote, L. Fortson, A. Furniss, G. Gallagher, W. F. Hanlon, O. Hervet, J. Hoang, J. Holder, T. B. Humensky, W. Jin, P. Kaaret, M. Kertzman, M. Kherlakian, D. Kieda, T. K. Kleiner, N. Korzoun, F. Krennrich, M. J. Lang, M. Lundy, G. Maier, C. E. McGrath, P. Moriarty, S. O'Brien, R. A. Ong, K. Pfrang, M. Pohl, E. Pueschel, J. Quinn, K. Ragan, P. T. Reynolds, E. Roache, N. L. Rodd, J. L. Ryan, I. Sadeh, L. Saha, M. Santander, G. H. Sembroski, R. Shang, M. Splettstoesser, D. Tak, J. V. Tucci, V. V. Vassiliev, D. A. Williams

Summary: Dark matter is a significant component in our understanding of the universe, and weakly interacting massive particles (WIMPs) are considered to be the leading candidates for dark matter. However, no evidence of WIMPs has been found in the conventional parameter space. In this study, we explore the possibility of ultraheavy dark matter (UHDM) as an alternative to WIMPs and search for indirect signals of dark matter annihilation in a higher mass range using the VERITAS gamma-ray observatory. Results from the observations of dwarf spheroidal galaxies suggest no gamma-ray signal from UHDM annihilation, leading to constraints on the annihilation cross section and allowed radius of UHDM particles.

ASTROPHYSICAL JOURNAL (2023)

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Article Astronomy & Astrophysics

VERITAS and Fermi-LAT Constraints on the Gamma-Ray Emission from Superluminous Supernovae SN2015bn and SN2017egm

A. Acharyya, C. B. Adams, P. Bangale, W. Benbow, J. H. Buckley, M. Capasso, V. V. Dwarkadas, M. Errando, A. Falcone, Q. Feng, J. P. Finley, G. M. Foote, L. Fortson, A. Furniss, G. Gallagher, A. Gent, W. F. Hanlon, O. Hervet, J. Holder, T. B. Humensky, W. Jin, P. Kaaret, M. Kertzman, M. Kherlakian, D. Kieda, T. K. Kleiner, S. Kumar, M. J. Lang, M. Lundy, G. Maier, C. E. McGrath, J. Millis, P. Moriarty, R. Mukherjee, M. Nievas-Rosillo, S. O'Brien, R. A. Ong, S. R. Patel, K. Pfrang, M. Pohl, E. Pueschel, J. Quinn, K. Ragan, P. T. Reynolds, D. Ribeiro, E. Roache, J. L. Ryan, I. Sadeh, M. Santander, G. H. Sembroski, R. Shang, M. Splettstoesser, D. Tak, J. V. Tucci, A. Weinstein, D. A. Williams, B. D. Metzger, M. Nicholl, I Vurm

Summary: Superluminous supernovae (SLSNe) are rare stellar explosions with luminosities much higher than ordinary core-collapse supernovae. A popular explanation for their enhanced optical output is energy injection from rapidly spinning magnetars. This paper presents a search for gamma-ray emission from two Type I SLSNe using observations from Fermi-LAT and VERITAS. While no gamma-ray emission was detected, the upper limits approach the spin-down luminosity of the putative magnetar. The prospects for detecting very-high-energy (VHE) emission from SLSNe-I with existing and planned facilities are explored.

ASTROPHYSICAL JOURNAL (2023)

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Article Astronomy & Astrophysics

HESS Follow-up Observations of GRB 221009A

F. Aharonian, F. Ait Benkhali, J. Aschersleben, H. Ashkar., M. Backes., A. Baktash, V. Barbosa Martins, R. Batzofin, Y. Becherini, D. Berge, K. Bernloehr, B. Bi, M. Boettcher, C. Boisson, J. Bolmont, M. de Bony de Lavergne, J. Borowska, M. Bouyahiaoui, F. Bradascio, M. Breuhaus, R. Brose, F. Brun, B. Bruno, T. Bulik, C. Burger-Scheidlin, S. Caroff, S. Casanova, J. Celic, M. Cerruti, T. Chand, S. Chandra, A. Chen, J. Chibueze, O. Chibueze, G. Cotter, S. Dai, J. Damascene Mbarubucyeye, J. Devin, A. Djannati-Atai, A. Dmytriiev, V. Doroshenko, K. Egberts, S. Einecke, J. -P. Ernenwein, S. Fegan, G. Fichet de Clairfontaine, M. Filipovic, G. Fontaine, M. Fuessling, S. Funk, S. Gabici, S. Ghafourizadeh, G. Giavitto, D. Glawion, J. F. Glicenstein, P. Goswami, G. Grolleron, M. -H. Grondin, J. A. Hinton, T. L. Holch, M. Holler, D. Horns, Zhiqiu Huang, M. Jamrozy, F. Jankowsky, V. Joshi, I. Jung-Richardt, E. Kasai, K. Katarzynski, R. Khatoon, B. Khelifi, W. Kluzniak, Nu. Komin, R. Konno, K. Kosack, D. Kostunin, R. G. Lang, S. Le Stum, F. Leitl, A. Lemiere, M. Lemoine-Goumard, J. -P. Lenain, F. Leuschner, T. Lohse, I. Lypova, J. Mackey, D. Malyshev, D. Malyshev, V. Marandon, P. Marchegiani, A. Marcowith, G. Marti-Devesa, R. Marx, M. Meyer, A. Mitchell, L. Mohrmann, A. Montanari, E. Moulin, T. Murach, K. Nakashima, M. de Naurois, J. Niemiec, A. Priyana Noel, P. O'Brien, S. Ohm, L. Olivera-Nieto, E. de Ona Wilhelmi, M. Ostrowski, S. Panny, M. Panter, R. D. Parsons, G. Peron, D. A. Prokhorov, H. Prokoph, G. Puehlhofer, M. Punch, A. Quirrenbach, P. Reichherzer, A. Reimer, O. Reimer, H. Ren, M. Renaud, B. Reville, F. Rieger, G. Rowell, B. Rudak, E. Ruiz-Velasco, V. Sahakian, H. Salzmann, A. Santangelo, M. Sasaki, J. Schaefer, F. Schuessler, H. M. Schutte, U. Schwanke, J. N. S. Shapopi, A. Specovius, S. Spencer, L. Stawarz, R. Steenkamp, S. Steinmassl, C. Steppa, I. Sushch, H. Suzuki, T. Takahashi, T. Tanaka, R. Terrier, N. Tsuji, Y. Uchiyama, M. Vecchi, C. Venter, J. Vink, S. J. Wagner, R. White, A. Wierzcholska, Yu Wun Wong, M. Zacharias, D. Zargaryan, A. A. Zdziarski, A. Zech, S. J. Zhu, N. Zywucka

Summary: GRB 221009A is the brightest gamma-ray burst ever detected. Using H.E.S.S. observations, we derived the upper limits of the energy flux and found consistency with other multiwavelength data. These results contribute to the understanding of the multiwavelength properties of GRB 221009A.

ASTROPHYSICAL JOURNAL LETTERS (2023)

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Article Astronomy & Astrophysics

The Fermi-LAT Lightcurve Repository

S. Abdollahi, M. Ajello, L. Baldini, J. Ballet, D. Bastieri, J. Becerra Gonzalez, R. Bellazzini, A. Berretta, E. Bissaldi, R. Bonino, A. Brill, P. Bruel, E. Burns, S. Buson, R. A. Cameron, R. Caputo, P. A. Caraveo, N. Cibrario, S. Ciprini, P. Cristarella Orestano, M. Crnogorcevic, S. Cutini, F. D'Ammando, S. De Gaetano, S. W. Digel, N. Di Lalla, L. Di Venere, A. Dominguez, V. Fallah Ramazani, S. J. Fegan, E. C. Ferrara, A. Fiori, H. Fleischhack, A. Franckowiak, Y. Fukazawa, P. Fusco, V. Gammaldi, F. Gargano, S. Garrappa, C. Gasbarra, D. Gasparrini, N. Giglietto, F. Giordano, M. Giroletti, D. Green, I. A. Grenier, S. Guiriec, M. Gustafsson, E. Hays, D. Horan, X. Hou, G. Johannesson, M. Kerr, D. Kocevski, M. Kuss, L. Latronico, J. Li, I. Liodakis, F. Longo, F. Loparco, L. Lorusso, B. Lott, M. N. Lovellette, P. Lubrano, S. Maldera, A. Manfreda, G. Marti-Devesa, M. N. Mazziotta, I. Mereu, M. Meyer, P. F. Michelson, T. Mizuno, M. E. Monzani, A. Morselli, I. V. Moskalenko, M. Negro, N. Omodei, E. Orlando, J. F. Ormes, D. Paneque, G. Panzarini, J. S. Perkins, M. Persic, M. Pesce-Rollins, R. Pillera, T. A. Porter, G. Principe, J. L. Racusin, S. Raino, R. Rando, B. Rani, M. Razzano, S. Razzaque, A. Reimer, O. Reimer, M. Sanchez-Conde, P. M. Saz Parkinson, Jeff Scargle, L. Scotton, D. Serini, C. Sgro, E. J. Siskind, G. Spandre, P. Spinelli, D. J. Suson, H. Tajima, D. J. Thompson, D. F. Torres, J. Valverde, T. Venters, Z. Wadiasingh, S. Wagner, K. Wood

Summary: The Fermi-LAT LCR is a publicly available repository that provides gamma-ray lightcurves of variable Fermi-LAT sources generated over multiple timescales. It aims to offer publication-quality lightcurves binned on timescales of 3, 7, and 30 days for 1525 variable sources. The LCR allows users to quickly search LAT data to identify correlated variability and flaring emission episodes from gamma-ray sources and serves as a resource for the time-domain and multimessenger communities.

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES (2023)

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Article Instruments & Instrumentation

Design and initial performance of the prototype for the BEACON instrument for detection of ultrahigh energy particles

Dan Southall, Cosmin Deaconu, Valentin Decoene, Eric Oberla, Andrew Zeolla, Jaime Alvarez-Muniz, Austin Cummings, Zach Curtis-Ginsberg, Angus Hendrick, Kaeli Hughes, Ryan Krebs, Andrew Ludwig, Katharine Mulrey, Steven Prohira, Washington Rodrigues de Carvalho, Andres Rodriguez, Andres Romero-Wolf, Harm Schoorlemmer, Abigail G. Vieregg, Stephanie A. Wissel, Enrique Zas

Summary: The BEACON is a neutrino telescope designed to detect radio emission from air showers generated by ultrahigh energy tau neutrino interactions with the Earth. A prototype instrument has been installed at high elevation and consists of 4 dual-polarized antennas. The instrument's signals are filtered, amplified, digitized, and saved using a custom data acquisition system.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2023)

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Article Physics, Multidisciplinary

Scientific objectives of the Hot Universe Baryon Surveyor (HUBS) mission

Joel Bregman, Renyue Cen, Yang Chen, Wei Cui, Taotao Fang, Fulai Guo, Edmund Hodges-Kluck, Rui Huang, Luis C. Ho, Li Ji, Suoqing Ji, Xi Kang, Xiaoyu Lai, Hui Li, Jiangtao Li, Miao Li, Xiangdong Li, Yuan Li, Zhaosheng Li, Guiyun Liang, Helei Liu, Wenhao Liu, Fangjun Lu, Junjie Mao, Gabriele Ponti, Zhijie Qu, Chenxi Shan, Lijing Shao, Fangzheng Shi, Xinwen Shu, Lei Sun, Mouyuan Sun, Hao Tong, Junfeng Wang, Junxian Wang, Q. Daniel Wang, Song Wang, Tinggui Wang, Weiyang Wang, Zhongxiang Wang, Dandan Xu, Haiguang Xu, Heng Xu, Renxin Xu, Xiaojie Xu, Yongquan Xue, Hang Yang, Feng Yuan, Shuinai Zhang, Yuning Zhang, Zhongli Zhang, Yuanyuan Zhao, Enping Zhou, Ping Zhou

Summary: HUBS is a proposed space-based X-ray telescope for detecting X-ray emissions from the hot gas content in our universe. It has unprecedented spatially-resolved high-resolution spectroscopy and a large field of view, making it uniquely qualified to measure the physical and chemical properties of hot gas in various cosmic environments. In addition to its scientific goals of understanding galaxy formation and evolution, the HUBS mission will also contribute to solving problems in galaxy clusters, AGNs, X-ray backgrounds, supernova remnants, and compact objects.

SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY (2023)

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Article Astronomy & Astrophysics

Prospects for joint cosmic ray and neutrino constraints on the evolution of trans-Greisen-Zatsepin-Kuzmin proton sources

Marco Stein Muzio, Michael Unger, Stephanie Wissel

Summary: In this paper, we examine the prospects for future ultrahigh energy cosmic ray and neutrino observations to constrain the evolution of sources that produce a proton flux above 10 EeV. We find that combining measurements of the cosmic ray proton fraction above 30 EeV with measurements of the neutrino flux at 1 EeV can provide strong constraints on source evolution, if neutrinos are predominantly of cosmogenic origin. If significant astrophysical neutrino flux is produced through interactions in the source environment, constraints on source evolution may require measurements of the observed proton fraction and the neutrino flux at multiple energies, such as 1 EeV and 10 EeV. Finally, we show that models favored by fits to current UHECR data predict a >30 EeV proton fraction and a 1 EeV neutrino flux that could realistically be detected by future experiments.

PHYSICAL REVIEW D (2023)

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Review Physics, Particles & Fields

Snowmass white paper: beyond the standard model effects on neutrino flavor

C. A. Arguelles, G. Barenboim, M. Bustamante, P. Coloma, P. B. Denton, I Esteban, Y. Farzan, E. Fernandez Martinez, D. Forero, A. M. Gago, T. Katori, R. Lehnert, M. Ross-Lonergan, A. M. Suliga, Z. Tabrizi, L. Anchordoqui, K. Chakraborty, J. Conrad, A. Das, C. S. Fong, B. R. Littlejohn, M. Maltoni, D. Parno, J. Spitz, J. Tang, S. Wissel

Summary: Neutrinos are potential messengers for new physics beyond the Standard Model, as their elusive nature and unknown mass mechanism suggest the opening of a window to new physics in the neutrino sector. Long-standing anomalies reported in the past decades provide strong motivation to thoroughly test the standard three-neutrino oscillation paradigm in current and future neutrino experiments. This Snowmass21 white paper explores the potential of these experiments to investigate new physics effects on neutrino flavor during the next decade.

EUROPEAN PHYSICAL JOURNAL C (2023)

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