Gamma-ray observations of MAXI J1820+070 during the 2018 outburst
High Energy Astrophysical Phenomena
2022-10-07 v2
Abstract
MAXI J1820+070 is a low-mass X-ray binary with a black hole as a compact object. This binary underwent an exceptionally bright X-ray outburst from March to October 2018, showing evidence of a non-thermal particle population through its radio emission during this whole period. The combined results of 59.5 hours of observations of the MAXI J1820+070 outburst with the H.E.S.S., MAGIC and VERITAS experiments at energies above 200 GeV are presented, together with Fermi-LAT data between 0.1 and 500 GeV, and multiwavelength observations from radio to X-rays. Gamma-ray emission is not detected from MAXI J1820+070, but the obtained upper limits and the multiwavelength data allow us to put meaningful constraints on the source properties under reasonable assumptions regarding the non-thermal particle population and the jet synchrotron spectrum. In particular, it is possible to show that, if a high-energy gamma-ray emitting region is present during the hard state of the source, its predicted flux should be at most a factor of 20 below the obtained Fermi-LAT upper limits, and closer to them for magnetic fields significantly below equipartition. During the state transitions, under the plausible assumption that electrons are accelerated up to ~ 500 GeV, the multiwavelength data and the gamma-ray upper limits lead consistently to the conclusion that a potential high-energy and very-high-energy gamma-ray emitting region should be located at a distance from the black hole ranging between 10^11 and 10^13 cm. Similar outbursts from low-mass X-ray binaries might be detectable in the near future with upcoming instruments such as CTA.
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Cite
@article{arxiv.2209.09785,
title = {Gamma-ray observations of MAXI J1820+070 during the 2018 outburst},
author = {H. Abe and S. Abe and V. A. Acciari and T. Aniello and S. Ansoldi and L. A. Antonelli and A. Arbet Engels and C. Arcaro and M. Artero and K. Asano and D. Baack and A. Babić and A. Baquero and U. Barres de Almeida and J. A. Barrio and I. Batković and J. Baxter and J. Becerra González and W. Bednarek and E. Bernardini and M. Bernardos and A. Berti and J. Besenrieder and W. Bhattacharyya and C. Bigongiari and A. Biland and O. Blanch and G. Bonnoli and Ž. Bošnjak and I. Burelli and G. Busetto and R. Carosi and M. Carretero-Castrillo and G. Ceribella and Y. Chai and A. Chilingarian and S. Cikota and E. Colombo and J. L. Contreras and J. Cortina and S. Covino and G. D'Amico and V. D'Elia and P. Da Vela and F. Dazzi and A. De Angelis and B. De Lotto and A. Del Popolo and M. Delfino and J. Delgado and C. Delgado Mendez and D. Depaoli and F. Di Pierro and L. Di Venere and D. Dominis Prester and A. Donini and D. Dorner and M. Doro and D. Elsaesser and G. Emery and V. Fallah Ramazani and L. Fariña and A. Fattorini and L. Font and C. Fruck and S. Fukami and Y. Fukazawa and R. J. García López and M. Garczarczyk and S. Gasparyan and M. Gaug and J. G. Giesbrecht Paiva and N. Giglietto and F. Giordano and P. Gliwny and N. Godinović and R. Grau and D. Green and J. G. Green and D. Hadasch and A. Hahn and T. Hassan and L. Heckmann and J. Herrera and J. Hoang and D. Hrupec and M. Hütten and R. Imazawa and T. Inada and R. Iotov and K. Ishio and I. Jiménez Martínez and J. Jormanainen and D. Kerszberg and Y. Kobayashi and H. Kubo and J. Kushida and A. Lamastra and D. Lelas and F. Leone and E. Lindfors and L. Linhoff and S. Lombardi and F. Longo and R. López-Coto and M. López-Moya and A. López-Oramas and S. Loporchio and A. Lorini and E. Lyard and B. Machado de Oliveira Fraga and P. Majumdar and M. Makariev and G. Maneva and N. Mang and M. Manganaro and S. Mangano and K. Mannheim and M. Mariotti and M. Martínez and A. Mas Aguilar and D. Mazin and S. Menchiari and S. Mender and S. Mićanović and D. Miceli and T. Miener and J. M. Miranda and R. Mirzoyan and E. Molina and H. A. Mondal and A. Moralejo and D. Morcuende and V. Moreno and T. Nakamori and C. Nanci and L. Nava and V. Neustroev and M. Nievas Rosillo and C. Nigro and K. Nilsson and K. Nishijima and T. Njoh Ekoume and K. Noda and S. Nozaki and Y. Ohtani and T. Oka and A. Okumura and J. Otero-Santos and S. Paiano and M. Palatiello and D. Paneque and R. Paoletti and J. M. Paredes and L. Pavletić and M. Persic and M. Pihet and G. Pirola and F. Podobnik and P. G. Prada Moroni and E. Prandini and G. Principe and C. Priyadarshi and I. Puljak and W. Rhode and M. Ribó and J. Rico and C. Righi and A. Rugliancich and N. Sahakyan and T. Saito and S. Sakurai and K. Satalecka and F. G. Saturni and B. Schleicher and K. Schmidt and F. Schmuckermaier and J. L. Schubert and T. Schweizer and J. Sitarek and V. Sliusar and D. Sobczynska and A. Spolon and A. Stamerra and J. Strišković and D. Strom and M. Strzys and Y. Suda and T. Surić and H. Tajima and M. Takahashi and R. Takeishi and F. Tavecchio and P. Temnikov and K. Terauchi and T. Terzić and M. Teshima and L. Tosti and S. Truzzi and A. Tutone and S. Ubach and J. van Scherpenberg and M. Vazquez Acosta and S. Ventura and V. Verguilov and I. Viale and C. F. Vigorito and V. Vitale and I. Vovk and R. Walter and M. Will and C. Wunderlich and T. Yamamoto and D. Zarić and H. Abdalla and F. Aharonian and F. Ait Benkhali and E. O. Angüner and H. Ashkar and M. Backes and V. Baghmanyan and V. Barbosa Martins and R. Batzofin and Y. Becherini and D. Berge and K. Bernlöhr and M. Böttcher and C. Boisson and J. Bolmont and M. de Bony de Lavergne and F. Bradascio and M. Breuhaus and R. Brose and F. Brun and T. Bulik and T. Bylund and F. Cangemi and S. Caroff and S. Casanova and M. Cerruti and T. Chand and S. Chandra and A. Chen and O. U. Chibueze and G. Cotter and P. Cristofari and J. Damascene Mbarubucyeye and J. Devin and A. 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Nakashima and M. de Naurois and A. Nayerhoda and J. Niemiec and A. Priyana Noel and P. O'Brien and S. Ohm and L. Olivera-Nieto and E. de Ona Wilhelmi and M. Ostrowski and S. Panny and M. Panter and R. D. Parsons and V. Poireau and D. A. Prokhorov and H. Prokoph and G. Pühlhofer and M. Punch and A. Quirrenbach and P. Reichherzer and A. Reimer and O. Reimer and M. Renaud and F. Rieger and G. Rowell and B. Rudak and H. Rueda Ricarte and E. Ruiz-Velasco and V. Sahakian and H. Salzmann and A. Santangelo and M. Sasaki and J. Schäfer and F. Schüssler and H. M. Schutte and U. Schwanke and J. N. S. Shapopi and H. Sol and A. Specovius and S. Spencer and Ł. Stawarz and R. Steenkamp and S. Steinmassl and C. Steppa and I. Sushch and H. Suzuki and T. Takahashi and T. Tanaka and C. Thorpe-Morgan and M. Tluczykont and L. Tomankova and N. Tsuji and Y. Uchiyama and C. van Eldik and B. van Soelen and M. Vecchi and J. Veh and C. Venter and J. Vink and S. J. Wagner and R. White and A. Wierzcholska and Yu Wun Wong and A. Yusafzai and M. Zacharias and R. Zanin and D. Zargaryan and A. A. Zdziarski and A. Zech and S. J. Zhu and S. Zouari and N. Żywucka and A. Acharyya and C. B. Adams and P. Batista and W. Benbow and M. Capasso and J. L. Christiansen and A. J. Chromey and M. Errando and A. Falcone and Q. Feng and J. P. Finley and G. M Foote and L. Fortson and A. Furniss and A. Gent and W. F Hanlon and O. Hervet and J. Holder and B. Hona and T. B. Humensky and W. Jin and P. Kaaret and M. Kertzman and M. Kherlakian and T. K. Kleiner and S. Kumar and M. J. Lang and M. Lundy and G. Maier and C. E. McGrath and J. Millis and P. Moriarty and R. Mukherjee and S. O'Brien and R. A. Ong and N. Park and S. R. Patel and K. Pfrang and M. Pohl and E. Pueschel and J. Quinn and K. Ragan and P. T. Reynolds and D. Ribeiro and E. Roache and J. L. Ryan and I. Sadeh and L. Saha and M. Santander and G. H. Sembroski and R. Shang and M. Splettstoesser and D. Tak and J. V. Tucci and A. Weinstein and D. A. Williams and T. J. Williamson and V. Bosch-Ramon and C. Celma and M. Linares and D. M. Russell and G. Sala},
journal= {arXiv preprint arXiv:2209.09785},
year = {2022}
}
Comments
15 pages, 5 figures. Accepted for publication in MNRAS