WIBRALS ivo://nasa.heasarc/wibrals NASA/GSFC HEASARC DAbrusco et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source This table contains a catalog of radio-loud candidate gamma-ray emitting blazars with WISE mid-infrared colors similar to the colors of confirmed gamma-ray blazars. The catalog is assembled from WISE sources detected in all four WISE filters, with colors that are compatible with the three-dimensional locus of the WISE gamma-ray emitting blazars, and which can be spatially cross-matched with radio sources from one of the three radio surveys: NVSS, FIRST, and/or SUMSS. The authors' initial WISE selection uses a slightly modified version of previously successful algorithms. They then select only the radio-loud sources using a measure of the radio-to-IR flux, the q<sub>22</sub> parameter, which is analogous to the q<sub>24</sub> parameter known in the literature but which instead uses the WISE band-four flux at 22 micron (µm). Their final catalog contains 7,855 sources classified as BL Lacs, FSRQs, or mixed candidate blazars; 1,295 of these sources can be spatially re-associated as confirmed blazars. In their paper, the authors describe the properties of the final catalog of WISE blazar-like radio-loud sources and consider possible contaminants. Finally, they discuss why this large catalog of candidate gamma-ray emitting blazars represents a new and useful resource to address the problem of finding low-energy counterparts to currently unidentified high-energy sources. The WISE magnitudes in the [3.4], [4.6], [12] and [22] um nominal filters are in the Vega system. The values of three WISE magnitudes, namely [3.4], [4.6], and [12], and of the colors derived using those magnitudes, have been corrected for galactic extinction according to the extinction law presented by Draine (2003, ARA&A, 41, 241). In their study, the authors adopt the nomenclature proposed in the Multi-wavelength Blazar Catalog (BZCat) that labels BL Lac objects as 'BZBs' and flat-spectrum radio quasars (FSRQs) as 'BZQs'. This table was created by the HEASARC in December 2014 based on a machine-readable version of Table 4 from the reference paper that was obtained from the ApJS web site. This is a service provided by NASA HEASARC . 2014ApJS..215...14D https://heasarc.gsfc.nasa.gov/W3Browse/all/wibrals.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=wibrals& GET text/xml 180 99999 true 298.91837 -88.83039 0.0333333333333333 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=wibrals GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_wibrals&Action=More+Options&Action=Parameter+Search&ConeAdd=1 WISE 0.0333333333333333 Infrared Radio public wibrals WISE Blazar-like Radio-Loud Source (WIBRaLS) Catalog name WIBRaL Catalog Source Designation meta.id;meta.main char nullable wise_name WISE Identifier meta.id char nullable radio_name Radio Counterpart Identifier meta.id.cross;em.radio char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable w1w2_color WISE 3.4-4.6 Micron Band Color mag phot.color;em.IR.3-4um;em.IR.4-8um double nullable w1w2_color_error Uncertainty in WISE 3.4-4.6 Micron Band Color mag stat.error;phot.color;em.IR.3-4um;em.IR.4-8um double nullable blazar_type Spectral Type of Blazar src.class char nullable blazar_type_grade Flag [ABCD] Indicates Grade of Classification meta.code;src.class char nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable class Browse Object Classification src.class short nullable mixed_region_score Score for Mixed Region of the Locus meta.code;src.class double nullable bzb_region_score Score for BZB Region of the Locus meta.code;src.class double nullable q_22 Logarithm of Ratio of 22-Micron to 1.4-GHz Flux Densities phot.flux;arith.ratio;em.IR.15-30um;em.radio.750-1500MHz double nullable bzq_region_score Score for BZQ Region of the Locus meta.code;src.class double nullable w3w4_color WISE 12-22 Micron Band Color mag phot.color;em.IR.8-15um;em.IR.15-30um double nullable w2w3_color WISE 4.6-12 Micron Band Color mag phot.color;em.IR.4-8um;em.IR.8-15um double nullable w3w4_color_error Uncertainty in WISE 12-22 Micron Band Color mag stat.error;phot.color;em.IR.8-15um;em.IR.15-30um double nullable w2w3_color_error Uncertainty in WISE 4.6-12 Micron Band Color mag stat.error;phot.color;em.IR.4-8um;em.IR.8-15um double nullable lii Galactic Longitude degree pos.galactic.lon double nullable bii Galactic Latitude degree pos.galactic.lat double nullable