Relativistic flows at the hotspots of radio galaxies and quasars?
نویسندگان
چکیده
منابع مشابه
Relativistic Flows at the Hotspots of Radio Galaxies and Quasars?
We review the broad band properties of X-ray detected hotspots in radio galaxies and quasars. We show that their collective spectral properties can be unified in a framework involving frequency dependent relativistic beaming and varying orientations to the observer’s line of sight. The simplest dynamic model consistent with this picture is a slowing-down relativistic flow downstream from the ho...
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Pairs of radio emitting jets with lengths up to several hundred kiloparsecs emanate from the central region (the ‘core’) of radio loud active galaxies. In the most powerful of them, these jets terminate in the ‘hotspots’, compact high brightness regions, where the jet flow collides with the intergalactic medium (IGM). Although it has long been established that in their inner (∼parsec) regions t...
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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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ژورنال
عنوان ژورنال: New Astronomy Reviews
سال: 2003
ISSN: 1387-6473
DOI: 10.1016/s1387-6473(03)00117-9