Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-05-08
Astrophys.J. 610 (2004) 686-690
Astronomy and Astrophysics
Astrophysics
Accepted for publication in ApJ. 17 pages, 5 figures. Minor changes to text
Scientific paper
10.1086/421863
Gravitational lenses that produce multiple images of background quasars can be an invaluable cosmological tool. Deriving cosmological parameters, however, requires modeling the potential of the lens itself. It has been estimated that up to a quarter of lensing galaxies are associated with a group or cluster which perturbs the gravitational potential. Detection of X-ray emission from the group or cluster can be used to better model the lens. We report on the first detection in X-rays of the group associated with the lensing system PG 1115+080 and the first X-ray image of the group associated with the system B1422+231. We find a temperature and rest-frame luminosity of 0.8 +/- 0.1 keV and 7 +/- 2 x 10^{42} ergs/s for PG 1115+080 and 1.0 +infty/-0.3 keV and 8 +/- 3 x 10^{42} ergs/s for B1422+231. We compare the spatial and spectral characteristics of the X-ray emission to the properties of the group galaxies, to lens models, and to the general properties of groups at lower redshift.
Bautz Mark W.
Chartas George
Garmire Gordon P.
Grant Catherine E.
No associations
LandOfFree
Detection of x-rays from galaxy groups associated with the gravitationally lensed systems PG 1115+080 and B1422+231 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 Detection of x-rays from galaxy groups associated with the gravitationally lensed systems PG 1115+080 and B1422+231, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of x-rays from galaxy groups associated with the gravitationally lensed systems PG 1115+080 and B1422+231 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-22950