| Online-Ressource |
Verfasst von: | Abe, Hyuga [VerfasserIn]  |
| Aharonian, Felix A. [VerfasserIn]  |
| Ait Benkhali, Faical [VerfasserIn]  |
| Bernlöhr, Konrad [VerfasserIn]  |
| Ghafourizadeh, Zahra [VerfasserIn]  |
| Jankowsky, Felix [VerfasserIn]  |
| Hinton, James Anthony [VerfasserIn]  |
| Lypova, Iryna [VerfasserIn]  |
| Marx, Ramin [VerfasserIn]  |
| Quirrenbach, Andreas [VerfasserIn]  |
| Steinmaßl, Simon [VerfasserIn]  |
| Wagner, Stefan [VerfasserIn]  |
Titel: | Gamma-ray observations of MAXI J1820+070 during the 2018 outburst |
Körperschaft: | MAGIC Collaboration [VerfasserIn]  |
| H.E.S.S. Collaboration [VerfasserIn]  |
Institutionen: | VERITAS Collaboration  |
Verf.angabe: | Magic Collaboration, H.E.S.S. Collaboration, VERITAS Collaboration |
E-Jahr: | 2022 |
Jahr: | 2022 September 23 |
Umfang: | 16 S. |
Illustrationen: | Illustrationen, Diagramme |
Fussnoten: | The Magic Collaboration: H. Abe, S. Abe [und viele weitere], The H.E.S.S. Collaboration: H. Abdalla, F. Aharonian, F. Ait Benkhali, K. Bernlöhr, S. Ghafourizadeh, J.A. Hinton, F. Jankowsky, I. Lypova, R. Marx, A. Quirrenbach, S. Steinmaßl, S.J. Wagner [und viele weitere], The VERITAS Collaboration: V. Bosch-Ramon [und weitere] ; Gesehen am 30.01.2024 |
Titel Quelle: | Enthalten in: Royal Astronomical SocietyMonthly notices of the Royal Astronomical Society |
Ort Quelle: | Oxford : Oxford Univ. Press, 1827 |
Jahr Quelle: | 2022 |
Band/Heft Quelle: | 517(2022), 4 vom: Dez., Seite 4736-4751 |
ISSN Quelle: | 1365-2966 |
Abstract: | MAXI J1820+070 is a low-mass X-ray binary with a black hole (BH) as a compact object. This binary underwent an exceptionally bright X-ray outburst from 2018 March to October, showing evidence of a non-thermal particle population through its radio emission during this whole period. The combined results of 59.5 h 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 (HE) 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 HE and very-HE gamma-ray emitting region should be located at a distance from the BH ranging between 1011 and 1013 cm. Similar outbursts from low-mass X-ray binaries might be detectable in the near future with upcoming instruments such as CTA. |
DOI: | doi:10.1093/mnras/stac2686 |
URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext: https://doi.org/10.1093/mnras/stac2686 |
| DOI: https://doi.org/10.1093/mnras/stac2686 |
Datenträger: | Online-Ressource |
Sprache: | eng |
K10plus-PPN: | 1879520397 |
Verknüpfungen: | → Zeitschrift |
Gamma-ray observations of MAXI J1820+070 during the 2018 outburst / Abe, Hyuga [VerfasserIn]; 2022 September 23 (Online-Ressource)