Time-dependent absorption of very high-energy gamma-rays from the Galactic center by pair-production

Details Time-dependent absorption of very high-energy gamma-rays from the Galactic center by pair-production Time-dependent absorption of very high-energy gamma-rays from the Galactic center by pair-production

2009-03-10

arxiv.org/abs/0903.1784v2

AIP Conf.Proc.1085:368-371,2008

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

4 pages, 6 figures, Published in Proceedings of the 4th International Meeting on High Energy Gamma-Ray Astronomy (Gamma 08), H

Scientific paper

10.1063/1.3076683

Very high energy (VHE) gamma-rays have been detected from the direction of the Galactic center. The H.E.S.S. Cherenkov telescopes have located this gamma-ray source with a preliminary position uncertainty of 8.5" per axis (6" statistic + 6" sytematic per axis). Within the uncertainty region several possible counterpart candidates exist: the Super Massive Black Hole Sgr A*, the Pulsar Wind Nebula candidate G359.95-0.04, the Low Mass X-Ray Binary-system J174540.0-290031, the stellar cluster IRS 13, as well as self-annihilating dark matter. It is experimentally very challenging to further improve the positional accuracy in this energy range and therefore, it may not be possible to clearly associate one of the counterpart candidates with the VHE-source. Here, we present a new method to investigate a possible link of the VHE-source with the near environment of Sgr A* (within approximately 1000 Schwarzschild radii). This method uses the time- and energy-dependent effect of absorption of gamma-rays by pair-production (in the following named pair-eclipse) with low-energy photons of stars closely orbiting the SMBH Sgr A*.

Affiliated with

Also associated with

No associations

Rating

Time-dependent absorption of very high-energy gamma-rays from the Galactic center by pair-production 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 Time-dependent absorption of very high-energy gamma-rays from the Galactic center by pair-production, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time-dependent absorption of very high-energy gamma-rays from the Galactic center by pair-production will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-187349