Isothermal shocks in Abell 2199 and 2A 0335+096?
نویسندگان
چکیده
منابع مشابه
Isothermal shocks in Abell 2199 and 2 A 0335 + 096 ?
We report on a partially circular X-ray surface brightness discontinuity found at about 55 kpc from the centre of Abell 2199 with Chandra X-ray observatory observations. Unlike cold fronts found in other clusters, the feature shows no significant temperature change across it but has an apparent density jump. We therefore identify it as a weak isothermal shock associated with the central AGN and...
متن کاملChandra observations of Abell 2199
We present results from an analysis of two Chandra observations of the rich, nearby galaxy cluster Abell 2199. We find evidence (having corrected for projection effects) for radial gradients in temperature and metallicity in the X-ray emitting gas: the temperature drops from kT ∼ 4.2 keV at R=200 kpc to 1.6 keV within R=5 kpc of the centre. The metallicity rises from ∼ 0.3 solar at R=200 kpc to...
متن کامل1 v 1 2 N ov 1 99 9 EUV EMISSION IN ABELL 1795 , ABELL 2199 , AND THE COMA CLUSTER
We report new EUV data on the cluster of galaxies Abell 1795. These data were taken well away from a detector defect which could have compromised earlier results on this cluster. Our new observations confirm the validity of the original data set. However, we find our results are strongly influenced by the variation of the telescope sensitivity over the field of view and upon the details of the ...
متن کاملRadial Variation of Optical and Near - Infrared Colours in Luminous Early - Type Galaxies in ABELL 2199
We performed K band surface photometry for luminous early-type galaxies in a nearby rich cluster ABELL 2199. Combining it with B and R band surface photometry, radial variations of B − R and R −K colours in the galaxies were investigated. It is found that the inner regions of the galaxies are redder in both of B − R and R −K colours. Comparing the radial variations of both of the colours with p...
متن کاملLimits on the Diffuse Radio and Hard X - Ray Emission of Abell 2199
The Westerbork Northern Sky Survey (WENSS) and the NRAO/VLA Sky Survey (NVSS) were used to determine an upper limit to the diffuse radio flux from the nearby cluster Abell 2199. For the entire cluster, this limit is <3.25 Jy at 327 MHz from WENSS; for the inner 15 radius, the limit is <168 mJy at 1.4 GHz. These limits are used to constrain the cluster magnetic field by requiring that the radio ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society: Letters
سال: 2006
ISSN: 1745-3925,1745-3933
DOI: 10.1111/j.1745-3933.2006.00209.x