Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-11-29
Mon.Not.Roy.Astron.Soc.321:L33,2001
Astronomy and Astrophysics
Astrophysics
5 pages, 5 figures, accepted by MNRAS, high resolution version available at http://www-xray.ast.cam.ac.uk/papers/a1795_chandra
Scientific paper
10.1046/j.1365-8711.2001.04243.x
We report the discovery of a 40 arcsec long X-ray filament in the core of the cluster of galaxies A1795. The feature coincides with an Halpha+NII filament found by Cowie et al in the early 1980s and resolved into at least 2 U-band filaments by McNamara et al in the mid 1990s. The (emission-weighted) temperature of the X-ray emitting gas along the filament is 2.5-3 keV, as revealed by X-ray colour ratios. The deprojected temperature will be less. A detailed temperature map of the core of the cluster presented. The cD galaxy at the head of the filament is probably moving through or oscillating in the cluster core. The radiative cooling time of the X-ray emitting gas in the filament is about 3x10^8 yr which is similar to the age of the filament obtained from its length and velocity. This suggests that the filament is produced by cooling of the gas from the intracluster medium. The filament, much of which is well separated from the body of the cD galaxy and its radio source, is potentially of great importance in helping to understand the energy and ionization source of the optical nebulosity common in cooling flows.
Allen Steven W.
Crawford Carolin S.
Ettori Stefano
Fabian Andrea C.
Iwasawa Kashuzi
No associations
LandOfFree
Chandra imaging of the X-ray core of Abell 1795 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 Chandra imaging of the X-ray core of Abell 1795, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chandra imaging of the X-ray core of Abell 1795 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-399175