Astronomy and Astrophysics – Astronomy
Scientific paper
May 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.191..399c&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 191, May 1980, p. 399-410. Research supported by the Radcliffe Trust;
Astronomy and Astrophysics
Astronomy
129
Filaments, Galactic Clusters, Gas Temperature, Interstellar Gas, Radiant Cooling, X Ray Sources, Astronomical Catalogs, Astronomical Models, Gas Flow, Steady State, Thermal Stability
Scientific paper
The paper generalizes previous discussions of the steady-flow models by allowing for the effects of angular momentum, which may be important in the central cooled regions of rich clusters of galaxies. The thermal stability of the flow is studied in a general way by relaxing the assumption that the perturbations comove. It is found that they are only unstable for a restricted range of initial parameters. Situations in which cold filaments can form are considered, and the subsequent evolution and excitation of such filaments are discussed. An estimate of the mass-to-light ratio of NGC 1275 is obtained by comparing the obtained results with the low-velocity filamentation system surrounding NGC 1275 in the Perseus cluster. Finally, the various aspects of cooling accretion flows in clusters are summarized.
Cowie Lennox L.
Fabian Andrea C.
Nulsen Paul E. J.
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