Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...189...11m&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 189, no. 1-2, Jan. 1988, p. 11-26.
Astronomy and Astrophysics
Astronomy
89
Astronomical Spectroscopy, Cosmic Gases, Gas Pressure, Luminosity, Radio Galaxies, X Ray Spectra, Astronomical Maps, Pressure Effects, Radio Jets (Astronomy), Spectrum Analysis
Scientific paper
X-ray data from the Einstein Observatory have been collected for a number of low luminosity B2 radio galaxies, in order to study the effect of gas pressure on radio sources. Generally, the thermal pressure of the X-ray emitting gas is sufficient to confine most of the radio components. Various possibilities are given for sources where thermal pressure significantly exceeds the nonthermal pressure. For radio lobes, an inverse correlation is found between the central densities of the cluster gas and the size of the radio structures. For jets, a study of the pressure ratios is given for different distances from the radio core. In a few cases, pressure imbalance is found in the outer regions of the jets. However, from depolarization data, this is unlikely to be produced by a large thermal component inside the radio jets.
de Ruiter Hans
Fanti Roberto
Gioia Isabella Maria
Harris Daniel E.
Morganti Rafaella
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