Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982sciam.246..124b&link_type=abstract
Scientific American, vol. 246, May 1982, p. 124-132, 134, 137, 138, 142.
Astronomy and Astrophysics
Astrophysics
10
Astrophysics, Cosmic Gases, Extragalactic Radio Sources, Plasma Jets, Radio Galaxies, Gas Expansion, Interstellar Magnetic Fields, Interstellar Matter, Radio Emission, Relativistic Plasmas, Synchrotron Radiation, Very Long Base Interferometry
Scientific paper
Characteristics and models for the production of high energy cosmic jets are examined. The jets have been observed to extend from sources as big as only a few suns to galactic clusters, to at times bend in several directions, to extend outwards from the source for hundreds of thousands of light years, and to emit in both radio and X ray ranges. Increased ranging and loss of resolution with very long base interferometry viewing are reviewed, noting the success with the method in locating the sources of jets. Hot spots are thought to form in the jets when the outermost end is slowed by encounters with interstellar and intergalactic particles, causing a rearward pile-up. Gas reaching the hot spots gives up kinetic energy to produce synchrotron-induced relativistic electrons and a magnetic field, and the gas then flows back toward the core, and may be turned aside to form observed radio lobes around the jets.
Begelman Mitchell C.
Blandford Roger. D.
Rees Martin J.
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