Hard X‐Ray Observation of Abell 496
نویسندگان
چکیده
منابع مشابه
Chandra Analysis of Abell 496
We present preliminary results of imaging and spectral analysis of the cluster A496 with the S3 chip on-board the Chandra satellite. We confirm the presence of a cooling flow and radial gradients in elemental abundances. The cluster’s core has clear signs of substructures (sharp edges, cavities), similar to those recently found in other cooling flow clusters. The O/Fe ratio distribution indicat...
متن کاملMetallicity Gradients in the Intracluster Gas of Abell 496
Analysis of spatially resolved ASCA spectra of the intracluster gas in Abell 496 confirms there are mild metal abundance enhancements near the center, as previously found by White et al. (1994) in a joint analysis of Ginga LAC and Einstein SSS spectra. Simultaneous analysis of spectra from all ASCA instruments (SIS + GIS) shows that the iron abundance is 0.36 ± 0.03 solar 3− 12′ from the center...
متن کاملROSAT HRI IMAGES OF ABELL 85 and ABELL 496 - EVIDENCE FOR INHOMOGENEITIES IN COOLING FLOWS
We present ROSAT HRI images of two clusters of galaxies with cooling flows, Abell 496 and Abell 85. In these clusters, X-ray emission on small scales above the general cluster emission is significant at the 3 a level. There is no evidence for optical counterparts. The enhancements'may be associated with lumps of gas -at a lower temperature and higher density than the ambient medium, or hotter, ...
متن کاملA photometric catalogue of galaxies in the cluster Abell 496 . ⋆ ⋆ ⋆
We present two catalogues of galaxies in the direction of the rich cluster ABCG 496. The first one includes 3,879 galaxies located in a region of roughly ± 1.3◦ from the cluster centre. It has been obtained from a list of more than 35,000 galaxy candidates detected by scanning part of a Schmidt photographic plate taken in the bJ band. Positions are very accurate in this catalogue but magnitudes...
متن کاملChandra Analysis of Abell 496 - No Chemical Gradients Across Cold
We present the results of a spatially-resolved spectroscopic analysis of the galaxy cluster Abell 496 with the S3 chip on-board the Chandra satellite. We confirm the presence of a central positive temperature gradient consistent with a cooling flow, but with a minimum gas temperature of ∼0.5–0.9 keV. The cluster also exhibits sharp edges in gas density and temperature which are consistent with ...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2000
ISSN: 0004-637X,1538-4357
DOI: 10.1086/309490