Multiwavelength observation of MAXI J1820+070 with MAGIC, VERITAS and H.E.S.S. - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2020

Multiwavelength observation of MAXI J1820+070 with MAGIC, VERITAS and H.E.S.S.

J. Hoang
E. Molina
M. López
  • Fonction : Auteur
M. Ribó
O. Blanch
J. Cortina
G. Maier
  • Fonction : Auteur
N. Park
  • Fonction : Auteur
M. de Naurois
Ona Wilhelmi
  • Fonction : Auteur
D. Malyshev
A. Mitchell
S. Ohm
R. Zanin

Résumé

MAXI J1820+070 is a new low-mass microquasar hosting a black hole recently discovered in X-rays by the MAXI instrument. It is the counterpart of ASASSN-18ey, discovered in optical a few days before by ASAS-SN. This source underwent a major outburst in 2018, during which it completed the typical "q-shaped" path in the hardness-intensity diagram. MAGIC, VERITAS and H.E.S.S. gamma-ray telescopes observed the sky position of MAXI J1820+070 for a total of more than 90 hours in 2018. In addition, some observations were carried out using MAGIC Central Pixel - a dedicated central pixel capable of detecting fast optical signals (10 kHz sampling rate, peak sensitivity in the U-band). This contribution presents the methods used to search for transient optical and very high energy gamma-ray emission from MAXI J1820+070, as well as the latest results in these energy ranges.

Dates et versions

hal-02302877 , version 1 (01-10-2019)

Identifiants

Citer

J. Hoang, E. Molina, M. López, M. Ribó, O. Blanch, et al.. Multiwavelength observation of MAXI J1820+070 with MAGIC, VERITAS and H.E.S.S.. 36th International Cosmic Ray Conference, Jul 2019, Madison, United States. pp.696, ⟨10.22323/1.358.0696⟩. ⟨hal-02302877⟩
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