Radio Galaxies and Relativistic Beaming
نویسندگان
چکیده
منابع مشابه
Relativistic beaming effects in the spectra of cores and hotspots in radio galaxies and quasars
We present the results of multi-wavelength observations of cores and hotspots at L, C, X and U bands with the Very Large Array, of a matched sample of radio galaxies and quasars selected from the Molonglo Reference Catalogue. We use these observations to determine the spectra of cores and hotspots, and test the unified scheme for radio galaxies and quasars. Radio cores have been detected at all...
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Relations between the observed quantities for a beamed radio jet, apparent transverse speed and apparent luminosity (βapp,L), and the intrinsic quantities, Lorentz factor and intrinsic luminosity (γ,Lo), are investigated. The inversion from measured to intrinsic values is not unique, but approximate limits to γ and Lo can be found using probability arguments. Roughly half the sources in a flux ...
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We discuss radio observations of a sample of radio-weak and radio-intermediate quasars which demonstrate that – just like their radio-loud counterparts – radioweak quasars too have relativistic jets in their nuclei. Moreover, a VLA survey of nearby LINER galaxies reveals a relatively large number of flat-spectrum radio cores. It is suggested that those cores are also best explained by moderatel...
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We calculate the broadband radio–X-ray spectra predicted by microblazar and microquasar models for Ultra-Luminous X-ray sources (ULXs), exploring the possibility that their dominant power-law component is produced by a relativistic jet, even at near-Eddington mass accretion rates. We do this by first constructing a generalized disk–jet theoretical framework in which some fraction of the total a...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1988
ISSN: 0074-1809
DOI: 10.1017/s0074180900134151