Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21360817m&link_type=abstract
American Astronomical Society, AAS Meeting #213, #608.17
Astronomy and Astrophysics
Astronomy
Scientific paper
We present observations of the galaxy cluster Abell 1795 taken with the Suzaku X-ray observatory. These observations are the first to probe the state of the intracluster medium in this object beyond 1.3 Mpc, extending to nearly the virial radius ( 2 Mpc). We sample two disjoint sectors in the cluster outskirts (1.3 < r < 1.9 Mpc) and detect X-ray emission in only one of them to a limiting soft X-ray surface brightness of less than one-third the cosmic X-ray background. We model the 3-d temperature profile at r > 0.36 Mpc and find that it falls more steeply than previously thought (T α r-0.8), reaching a value less than one third of its peak at the largest radius we can measure it. Assuming the intracluster medium is in hydrostatic equilibrium, we estimate a mass of 3.8+0.5-0.3 x 1014 solar masses within 1.3 Mpc, somewhat lower than that reported by previous observers. Finally, we present an analysis of the effects of unresolved point sources on our results. Understanding this contamination is vital to properly study faint, extended emission with Suzaku. This work was supported in part by funding from NASA grant NNG05GM92G.
Arnaud Keith
Bautz Mark W.
Hayashida Kiyoshi
Henry Patrick
Hughes Jacob
No associations
LandOfFree
Probing Abell 1795 to the Virial Radius with Suzaku 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 Probing Abell 1795 to the Virial Radius with Suzaku, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Probing Abell 1795 to the Virial Radius with Suzaku will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1765646