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

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

2009-10-02

arxiv.org/abs/0910.0399v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

30 pages, 5 figures, accepted for publication in ASR

Scientific paper

Sagittarius A* (Sgr A*) 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/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.

Affiliated with

Also associated with

No associations

Rating

Soft gamma-ray constraints on a bright flare from the Galactic Center supermassive black hole does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Soft gamma-ray constraints on a bright flare from the Galactic Center supermassive black hole, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Soft gamma-ray constraints on a bright flare from the Galactic Center supermassive black hole will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-26340