Gamma-ray observations of MAXI J1820+070 during the 2018 outburst

Abe, H; (...); Babić, Ana; (...); Bošnjak, Željka; (...); Cikota, Stefan; (...); Dominis Prester, Dijana; (...); Godinović, Nikola; (...); Hrupec, Dario; (...); Lelas, Damir; (...); Manganaro, Marina; (...); Mićanović, Saša; (...); Pavletić, Lovro; (...); Puljak, Ivica; (...); Strišković, Jelena; (...); Surić, Tihomir; (...); Terzić, Tomislav; (...); Zarić, Darko; (...); Sala, G.

doi:10.1093/mnras/stac2686

Pregled bibliografske jedinice broj: 1235301

Gamma-ray observations of MAXI J1820+070 during the 2018 outburst

(MAGIC Collaboration ; H.E.S.S. Collaboration ; VERITAS Collaboration) Abe, H; (...); Babić, Ana; (...); Bošnjak, Željka; (...); Cikota, Stefan; (...); Dominis Prester, Dijana; (...) et al.

Gamma-ray observations of MAXI J1820+070 during the 2018 outburst // Monthly notices of the Royal Astronomical Society, 517 (2022), 4; 4736-4751 doi:10.1093/mnras/stac2686 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 1235301 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Gamma-ray observations of MAXI J1820+070 during the 2018 outburst

Autori
Abe, H ; (...) ; Babić, Ana ; (...) ; Bošnjak, Željka ; (...) ; Cikota, Stefan ; (...) ; Dominis Prester, Dijana ; (...) ; Godinović, Nikola ; (...) ; Hrupec, Dario ; (...) ; Lelas, Damir ; (...) ; Manganaro, Marina ; (...) ; Mićanović, Saša ; (...) ; Pavletić, Lovro ; (...) ; Puljak, Ivica ; (...) ; Strišković, Jelena ; (...) ; Surić, Tihomir ; (...) ; Terzić, Tomislav ; (...) ; Zarić, Darko ; (...) ; Sala, G.

Kolaboracija
MAGIC Collaboration ; H.E.S.S. Collaboration ; VERITAS Collaboration

Izvornik
Monthly notices of the Royal Astronomical Society (0035-8711) 517 (2022), 4; 4736-4751

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
stars: individual: MAXI J1820+070 ; gamma rays: general ; stars: black holes ; X-rays: binaries

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA

Ustanove:
Fakultet elektrotehnike, strojarstva i brodogradnje, Split,
Fakultet elektrotehnike i računarstva, Zagreb,
Institut "Ruđer Bošković", Zagreb,
Sveučilište u Osijeku - Odjel za fiziku,
Sveučilište u Rijeci - Odjel za fiziku

Profili:

Dario Hrupec (autor)