The Deep X-ray Radio Blazar Survey (DXRBS)

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dc.creatorPadovani, Paolo
dc.creatorPerlman, Eric
dc.creatorGiommi, Paolo
dc.creatorSambruna, Rita
dc.creatorJones, Laurence R.
dc.creatorTzioumis, Anastasios
dc.creatorReynolds, John
dc.date1998-03-25
dc.date.accessioned2026-07-07T02:26:27Z
dc.date.available2026-07-07T02:26:27Z
dc.descriptionWe have undertaken a survey for blazars by correlating the ROSAT WGACAT database with publicly available radio catalogs, restricting our candidate list to serendipitous flat-spectrum sources (alpha_r <= 0.7). We discuss here our survey methods, identification procedure and first results. Our survey is found to be ~ 95% efficient at finding blazars, a figure which is comparable to or greater than that achieved by other radio and X-ray survey techniques. DXRBS provides a much more uniform coverage of the parameter space occupied by blazars than any previous survey. Particularly important is the identification of a large population of flat-spectrum radio quasars with ratios of X-ray to radio luminosity >~ 10^-6 (alpha_rx <~ 0.78) and of many low-luminosity flat-spectrum radio quasars. Moreover, DXRBS fills in the region of parameter space between X-ray selected and radio-selected samples of BL Lacs.
dc.description6 pages, 2 figures. Invited talk at the ESO/ATNF Workshop "Looking Deep in the Southern Sky", Sydney, Australia, December 1997, to appear in the proceedings
dc.identifierhttps://arxiv.org/abs/astro-ph/9803298
dc.identifierhttp://arxiv.org/abs/astro-ph/9803298
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/12281
dc.subjectAstrophysics
dc.titleThe Deep X-ray Radio Blazar Survey (DXRBS)
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