- Newton look at the most X - ray - luminous galaxy cluster RX J 1347 . 5 − 1145
نویسنده
چکیده
We present the first results from an XMM-Newton observation of RX J1347.5−1145 (z=0.451), the most luminous X-ray cluster of galaxies currently known, with a luminosity LX = 6.0±0.1×10 45 erg s in the [2-10] keV energy band. The cluster has an overall temperature of kT = 10.0 ± 0.3 keV and is not isothermal: the temperature profile shows a decline in the outer regions and a drop in the centre, indicating the presence of a cooling core. The spectral analysis identifies a hot region at radii 50-200 kpc to south-east of the main X-ray peak, at a position consistent with the subclump seen in the X-ray image. Excluding the data of the south-east quadrant, the cluster appears relatively relaxed and we estimate a total mass within 1 Mpc of 1.0 ± 0.2× 10M⊙.
منابع مشابه
XMM - Newton observation of the most X - ray - luminous galaxy cluster RX J 1347 . 5 − 1145
We report on an XMM-Newton observation of RX J1347.5−1145 (z=0.451), the most luminous X-ray cluster of galaxies currently known, with a luminosity LX = 6.0 ± 0.1 × 10 erg/s in the [2-10] keV energy band. We present the first temperature map of this cluster, which shows a complex structure. It identifies the cool core and a hot region at radii 50-200 kpc to south-east of the main X-ray peak, at...
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Context. We present the results from the analysis of long Suzaku observations (149 ks and 122 ks for XIS and HXD, respectively) of the most X-ray luminous galaxy cluster, RX J1347.5–1145, at z = 0.451. Aims. In order to understand the gas physics of a violent cluster merger, we study physical properties of the hot (∼ 20 keV) gas clump in the southeast (SE) region discovered previously by the Su...
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We present a sample of 47 spectroscopically confirmed members of RX J1347−1145, the most luminous X-ray cluster of galaxies discovered to date. With two exceptions, all the galaxies in this sample have red B−R colors and red spectral indices, with spectra similar to old local ellipticals. Using all 47 cluster members, we derive a mean redshift of z̄ = 0.4509± 0.003, and a velocity dispersion of ...
متن کاملStrong and weak lensing united II : the cluster mass distribution of the most X - ray luminous cluster RX J 1347 . 5 − 1145 ⋆
We have shown that the cluster-mass reconstruction method which combines strong and weak gravitational lensing data, developed in the first paper in the series, successfully reconstruct the cluster mass distribution. In this paper we apply the method to the ground-based high-quality multi-colour data of RX J1347.5−1145, the most X-ray luminous cluster to date. The very deep multi-colour data an...
متن کاملExploring Cluster Physics with High-resolution Sunyaev-Zel’dovich Effect Images and X-ray Data: A Case of the Most X-ray Luminous Galaxy Cluster RX J1347-1145
Foreseeing the era of high spatial resolution measurements of the Sunyaev-Zel’dovich effect (SZE) in clusters of galaxies, we present a prototype analysis of this sort combined with Chandra X-ray data. It is applied specifically to RX J1347-1145 at z = 0.451, the most X-ray luminous galaxy cluster known, for which the highest resolution SZE and X-ray images are currently available. We demonstra...
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تاریخ انتشار 2004