Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-06-06
Astrophys.J.664:L39-L42,2007
Astronomy and Astrophysics
Astrophysics
4 pages, 3 figures. Accepted for publication in ApJ Letters
Scientific paper
10.1086/520674
We present a 50 ks observation of the gamma-ray binary LSI+61303 carried out with the ACIS-I array aboard the Chandra X-ray Observatory. This is the highest resolution X-ray observation of the source conducted so far. Possible evidence of an extended structure at a distance between 5 and 12 arcsec towards the North of LSI+61303 have been found at a significance level of 3.2 sigma. The asymmetry of the extended emission excludes an interpretation in the context of a dust-scattered halo, suggesting an intrinsic nature. On the other hand, while the obtained source flux, of F_{0.3-10 keV}=7.1^{+1.8}_{-1.4} x 10^{-12} ergs/cm^2/s, and hydrogen column density, N_{H}=0.70+/-0.06 x 10^{22} cm^{-2}, are compatible with previous results, the photon index Gamma=1.25+/-0.09 is the hardest ever found. In light of these new results, we briefly discuss the physics behind the X-ray emission, the location of the emitter, and the possible origin of the extended emission ~0.1 pc away from LSI+61303.
Bosch-Ramon Valenti
Butt Yousaf M.
Marti James
Paredes Javier M.
Ribó Marc
No associations
LandOfFree
Chandra Observations of the Gamma-ray Binary LSI+61303: Extended X-ray Structure? 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 Chandra Observations of the Gamma-ray Binary LSI+61303: Extended X-ray Structure?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chandra Observations of the Gamma-ray Binary LSI+61303: Extended X-ray Structure? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-357330