Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...240..254j&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 240, no. 2, Dec. 1990, p. 254-258.
Astronomy and Astrophysics
Astrophysics
48
Absorption Spectra, Active Galaxies, Cooling Flows (Astrophysics), Radio Sources (Astronomy), Galactic Nuclei, Interacting Galaxies, Interstellar Gas, Red Shift, Very Large Array (Vla)
Scientific paper
With new high sensitivity and dynamic range 21 cm observations of neutral hydrogen absorption in front of the radio source 3 C 84 in the Perseus Cluster, absorption in the low velocity (5000 km/s) system has been detected at three positions near the central galaxy NGC 1275. The inferred neutral hydrogen mass is large, about 10 to the 10th solar masses. The gas is highly turbulent but shows no significant rotation. Its mass and kinetic energy imply that it must be considered a major component of the dynamics of the cooling flow near the galaxy. Some interaction between the warm gas components and the radio emitting regions seems likely.
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