BeppoSAX observations of three distant, highly luminous clusters of galaxies: RXJ1347-1145, Z3146 and A2390

Details BeppoSAX observations of three distant, highly luminous clusters of galaxies: RXJ1347-1145, Z3146 and A2390 BeppoSAX observations of three distant, highly luminous clusters of galaxies: RXJ1347-1145, Z3146 and A2390

2000-10-09

arxiv.org/abs/astro-ph/0010162v2

Mon.Not.Roy.Astron.Soc.322:187,2001

Astronomy and Astrophysics

Astrophysics

8 pages. MNRAS in press. Minor changes in the text, figure 5 and references to match the version in press

Scientific paper

10.1046/j.1365-8711.2001.04089.x

We present an analysis of BeppoSAX observations of three clusters of galaxies which are amongst the most luminous in the Universe: RXJ1347-1145, Zwicky 3146 and Abell 2390. Using data from both the Low Energy (LECS) and Medium Energy (MECS) Concentrator Spectrometers, and a joint analysis with the Phoswich Detection System (PDS) data above 10 keV, we constrain, with a relative uncertainty of between 7 and 42 per cent (90 per cent confidence level), the mean gas temperature in the three clusters. These measurements are checked against any possible non-thermal contribution to the plasma emission and are shown to be robust. We confirm that RXJ1347-1145 has a gas temperature that lies in the range between 13.2 and 22.3 keV at the 90 per cent confidence level, and is larger than 12.1 keV at 3 sigma level. The existence of such a hot galaxy cluster at redshift of about 0.45 implies an upper limit on the mean mass density in the Universe, Omega_m, of 0.5. Combining the BeppoSAX estimates for gas temperature and luminosity of the three clusters presented in this work with ASCA measurements available in the literature, we obtain a slope of 2.7 in the L-T relation once the physical properties are corrected from the contamination from the central cooling flows.

Affiliated with

Also associated with

No associations

Rating

BeppoSAX observations of three distant, highly luminous clusters of galaxies: RXJ1347-1145, Z3146 and A2390 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 BeppoSAX observations of three distant, highly luminous clusters of galaxies: RXJ1347-1145, Z3146 and A2390, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and BeppoSAX observations of three distant, highly luminous clusters of galaxies: RXJ1347-1145, Z3146 and A2390 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-77737