Abstract
view Abstract Citations (16) References (37) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Low-Temperature Transonic Cooling Flows in Galaxy Clusters Sulkanen, Martin E. ; Burns, Jack O. ; Norman, Michael L. Abstract Cooling flows involving the gas of a galaxy cluster can become supersonic for high mass accretion rates and low cluster gas temperatures. Such cooling flows may alter the structure of a radio source associated with the central dominant galaxy of the cluster. Specifically, a number of wide-angle tailed radio sources may be caused by the disruption of a radio jet by propagation through a transonic cooling flow with a sonic radius of 10-20 kpc. In this paper we present calculations for transonic cooling flows with such large sonic radii. We find that plausible cluster parameters and cooling flow mass accretion rates can produce sonic radii of 10-20 kpc for the low sonic point temperatures of 1-3 x 10^6^ K. The cooling flow models do match the observed X-ray surface brightness of galaxy clusters in which cooling flows were heretofore considered absent. The X-ray luminosities and effective gas temperatures for these "cool" cooling flows deviate from the observed values; however, we suggest that uncertainties in the gas X-ray emissivity and the mass associated with the central galaxy of the clusters may allow this model to be consistent with the observed luminosities and gas temperatures of these clusters. These results may expand the range of physical parameters of galaxy clusters in which cooling flows exist. Publication: The Astrophysical Journal Pub Date: September 1989 DOI: 10.1086/167829 Bibcode: 1989ApJ...344..604S Keywords: Cooling Flows (Astrophysics); Galactic Clusters; Gas Flow; Low Temperature Environments; Transonic Flow; Intergalactic Media; X Ray Astronomy; Astrophysics; GALAXIES: CLUSTERING; GALAXIES: INTERGALACTIC MEDIUM; GALAXIES: X-RAYS full text sources ADS | data products SIMBAD (3) NED (3)
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