Soft gamma-ray constraints on a bright flare from the Galactic Center supermassive black hole

被引：14

作者：

Trap, G. ^{[1
,2
]}

Goldwurm, A. ^{[2
]}

Terrier, R. ^{[2
]}

Dodds-Eden, K. ^{[3
]}

Gillessen, S. ^{[3
]}

Genzel, R. ^{[3
]}

Pantin, E. ^{[4
]}

Lagage, P. O. ^{[4
]}

Ferrando, P. ^{[2
]}

Belanger, G. ^{[5
]}

Porquet, D. ^{[6
]}

Grosso, N. ^{[6
]}

Yusef-Zadeh, F. ^{[7
]}

Melia, F. ^{[8
,9
]}

机构：

[1] Univ Paris 07, CNRS, CEA Saclay, IRFU,DSM,SAp, F-91191 Gif Sur Yvette, France

[2] Univ Paris 07, CNRS, CEA, Observ Paris, F-75205 Paris 13, France

[3] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany

[4] Univ Paris 07, CNRS, CEA, F-91191 Gif Sur Yvette, France

[5] ESAC, ESA, Madrid 28691, Spain

[6] Univ Strasbourg, CNRS, Observ Astron Strasbourg, F-67000 Strasbourg, France

[7] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA

[8] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA

[9] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA

来源：

ADVANCES IN SPACE RESEARCH | 2010年 / 45卷 / 04期

关键词：

Black hole physics; Radiation mechanisms: non-thermal; Galaxy: center; Gamma rays: observations; Infrared: general; X-rays: general; SAGITTARIUS-A-ASTERISK; VARIABLE INFRARED-EMISSION; PHOTON IMAGING CAMERA; X-RAY; XMM-NEWTON; MULTIWAVELENGTH OBSERVATIONS; ELECTRON ACCELERATION; CENTRAL PARSEC; 1ST; VARIABILITY;

D O I：

10.1016/j.asr.2009.09.025

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Sagittarius A* (SgrA*) is the supermassive black hole residing at the center of the Milky Way. It has been the main target of an extensive multiwavelength campaign we carried out in April 2007. Herein, we report the detection of a bright flare from the vicinity of the horizon, observed simultaneously in X-rays (XMM-Newton/EPIC) and near infrared (VLT/NACO) on April 4th for 1-2 h. For the first time, such an event also benefitted from a soft gamma-rays (INTEGRAL/ISGRI) and mid infrared (VLT/VISIR) coverage, which enabled us to derive upper limits at both ends of the flare spectral energy distribution (SED). We discuss the physical implications of the contemporaneous light curves as well as the SED, in terms of synchrotron, synchrotron self-Compton and external Compton emission processes. (C) 2009 COSPAR. Published by Elsevier Ltd. All rights reserved.

引用

页码：507 / 520

页数：14

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