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Jets in Extragalactic Radio Sources
Science, 1984Observations now require that there be a continuous supply of energy to the giant extragalactic radio sources. These observations also suggest that this energy input may be in the form of streams or jets of gas emanating from the centers of galaxies and quasi-stellar objects. Current data indicate that the large-scale jet structures are not moving with
D S De Young
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Numerical Models of Extragalactic Radio Sources
Science, 1991Numerical simulations with supercomputers allow analysis of the wide range of nonlinear physics inherent in the hydrodynamic and magnetohydrodynamic equations. When applied to extragalactic radio sources, these numerical models have begun to reproduce many of the complex structures observed on telescopic images.
Jack O Burns +2 more
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Evolution of Extragalactic Radio Sources
EAS Publications Series, 2001 I review the current paradigm for extragalactic radio sources including their classification, relationship to their host galaxies, their environments, their propagation, and their lifetimes. I emphasize recent progress in our understanding of radio source evolution and I discuss the current open questions.
C.P. O'Dea
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Fast Radio Bursts: An Extragalactic Enigma [PDF]
Annual Review of Astronomy and Astrophysics, 2019 We summarize our understanding of millisecond radio bursts from an extragalactic population of sources. Fast radio bursts (FRBs) occur at an extraordinary rate, thousands per day over the entire sky with radiation energy densities at the source about ten
J M Cordes, S Chatterjee
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Proceedings of the IEEE, 1973
More than 10 000 individual discrete sources have been detected by radio surveys made at frequencies from 10 MHz to 5 GHz. Although only a few hundred of these are reliably identified with galaxies or quasars, it is widely believed that the overwhelming majority are extragalactic.
K.I. Kellermann, I.I.K. Pauliny-Toth
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More than 10 000 individual discrete sources have been detected by radio surveys made at frequencies from 10 MHz to 5 GHz. Although only a few hundred of these are reliably identified with galaxies or quasars, it is widely believed that the overwhelming majority are extragalactic.
K.I. Kellermann, I.I.K. Pauliny-Toth
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Models for Extragalactic Radio Sources
Symposium - International Astronomical Union, 1986Doubt is cast on the reality of the following four assumptions commonly made in the treatment of extragalactic radio sources: (1) The central engine is a black hole; (2) Electrons can be accelerated in situ in the knots and heads of the jets, to large Lorentz factors γ ≥ 102, with an efficiency exceeding 30%; (3) The (non-thermal) radiation emitted by ...
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New Interpretation of Extragalactic Radio Sources
Nature, 1971M J Rees, Rees M J
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Advances in Space Research, 1981
Abstract Some recent observational results on extended and compact extragalactic radio sources are described. Theoretical interpretations are critically examined.
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Abstract Some recent observational results on extended and compact extragalactic radio sources are described. Theoretical interpretations are critically examined.
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1995
Twelve years after the publication of the first results obtained by Jansky in 1932, which marked the beginning of radio astronomy, Reber observed a radio-emission maximum in the constellation Cygnus. It was the first detection of Cygnus A, one of the brightest of all extragalactic sources (that is, located outside our Galaxy) in the radio region. These
Françoise Combes +3 more
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Twelve years after the publication of the first results obtained by Jansky in 1932, which marked the beginning of radio astronomy, Reber observed a radio-emission maximum in the constellation Cygnus. It was the first detection of Cygnus A, one of the brightest of all extragalactic sources (that is, located outside our Galaxy) in the radio region. These
Françoise Combes +3 more
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The Structure of Extended Extragalactic Radio Sources
Annual Review of Astronomy and Astrophysics, 1980G. Miley
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