The Faint Radio Sky
نویسنده
چکیده
منابع مشابه
Faint Radio Sources in the Noao Boötes Field: Vlba Imaging and Optical Identifications
As a step toward investigating the parsec-scale properties of faint extragalactic radio sources, the Very Long Baseline Array (VLBA) was used at 5.0 GHz to obtain phase-referenced images of 76 sources in the NOAOBoötes field. These 76 sources were selected from the Faint Images of the Radio Sky at Twenty cm (FIRST) catalog to have peak flux densities above 10 mJy at 500 resolution and deconvolv...
متن کاملVLA survey of the CDFS: the nature of faint radio sources
We present the multiwavelength properties of 266 cataloged radio sources identified with 20 and 6 cm VLA deep observations of the CDFS at a flux density limit of 42 μJy at the field centre at 1.4 GHz. These new observations probe the faint end of both the star formation and radio galaxy/AGN population. X–ray data, including upper limits, turn out to be a key factor in establishing the nature of...
متن کاملDeep low-frequency observations with the Giant Metrewave Radio Telescope: a search for relic radio emission
We present deep multifrequency observations using the Giant Metrewave Radio Telescope at 153, 244, 610 and 1260 MHz of a field centered on J0916+6348, to search for evidence of fossil radio lobes which could be due to an earlier cycle of episodic activity of the parent galaxy, as well as halos and relics in clusters of galaxies. We do not find any unambiguous evidence of episodic activity in a ...
متن کاملOptical morphology of distant RATAN-600 radio galaxies from subarcsecond resolution NOT images
We present direct imaging data of 22 ultra steep spectrum radio sources obtained at (or near) a subarcsecond seeing. The basic sample of 40 double radio sources was selected from the RATAN-600 catalogue. The FRII-structure has been confirmed with VLA and preliminary optical identifications which come from the 6 mtelescope. As the RATAN-600 flux limit at 3.9 GHz (≈ 10mJy) is fainter than that of...
متن کاملNew blazars from the cross-match of recent multi-frequency catalogs
Blazars are radio-loud active galactic nuclei well known for their non thermal emission spanning a wide range of frequencies. The Roma-BZCAT is, to date, the most comprehensive list of these sources. We performed the cross-match of several catalogs obtained from recent surveys at different frequencies to search for new blazars. We cross-matched the 1 Swift XRT Point Source catalog with the spec...
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تاریخ انتشار 2002