J/MNRAS/482/2502ivo://CDS.VizieR/J/MNRAS/482/2502doi:10.26093/cds/vizier.74822502CDSKuiack M.Huizinga F.Molenaar G.Prasad P.Rowlinson A.,Wijers R.A.M.J.2024-08-19T20:14:47Z2022-08-02T08:34:11ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frsurveysradio-continuum-emissionWe present a method for calibrating the flux density scale for images generated by the Amsterdam ASTRON Radio Transient Facility And Analysis Centre (AARTFAAC). AARTFAAC produces a stream of all-sky images at a rate of 1s in order to survey the Northern hemisphere for short duration, low-frequency transients, such as the prompt electromagnetic counterpart to gravitational wave events, magnetar flares, blazars, and other as of yet unobserved phenomena. Therefore, an independent flux density scaling solution per image is calculated via bootstrapping, comparing the measured apparent brightness of sources in the field to a reference catalogue. However, the lack of accurate flux density measurements of bright sources below 74MHz necessitated the creation of the AARTFAAC source catalogue, at 60MHz, which contains 167 sources across the Northern hemisphere. Using this as a reference results in a sufficiently high number of detected sources in each image to calculate a stable and accurate flux scale per 1s snapshot, in real-time.2019MNRAS.482.2502Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/482/2502CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/482/2502https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/482/2502http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/482/2502https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/482/2502https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/482/2502http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/482/2502GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/482/2502/tablea1 (AARTFAAC Northern hemisphere catalogue at 60MHz)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/482/2502/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/482/2502/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/482/2502/tablea1?GETtext/xml+votable180.050000true176.8449.650.0055555555555555566/51 416 686 946 958 1129 1263 1338 1466 1470 1521 1648 1701 1852 2016 2136 2230 2249 2256 2402 2412 2951 3063 3126 3184 3299 3396 3507 3558 3651 3743 3818 3917 4083 4324 4352 4367 4377 4476 4643 4838 4924 5025 5087 5262 5311 5413 5439 5598 5669 5756 5804 5820 5973 6075 6170 6446 6536 6549 6617 6747 6797 6889 7061 7376 7392 7508 7606 7682 7708 7763 7814 7882 7888 7903 7959 8001 8017 8044 8056 8085 8116 8152 8265 8268 8675 8809 8990 9468 9698 9992 10052 10353 10374 10379 10432 10485 10498 10527 10529 10601 10664 10731 10743 10936 11048 11171 11365 11408 11512 11652 11670 11831 12010 12047 12094 12127 12241 12778 12796 13007 13206 13224 13707 13855 14454 14690 14789 14858 15056 15067 15407 15580 15909 16189 16301 18365 19935 20358 21982 22365 22452 23454 23469 23688 23995 24003 24023 24282 24300 24506 26100 27382 27442 27514 27526 27714 27873 27934 27955 28061 28249 28277 28391 28540 28574 315523.975641653322288e-26 3.975641653322288e-26https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/482/2502?format=asciiRadiodefaultJ/MNRAS/482/2502/tablea1AARTFAAC Northern hemisphere catalogue at 60MHzSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNmeasNumber of images used to generate light curvemeta.numberintIDID derived from the positions measured as in the VLSSr (JHHMM+DDd)meta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.maine_RAJ2000Error on RAdegdegstat.error;pos.eq.rafloatDEJ2000Declination (J2000)degpos.eq.dec;meta.maine_DEJ2000Error on DEdegdegstat.error;pos.eq.decfloatFintFlux density at 60MHz (1)Jyphot.flux.density;em.radio.20-100MHzfloate_FintError on Fint (1)Jystat.errorfloatLocSkew normal distribution location parameter ({xi}) (2)stat.fit.paramfloate_LocError on Loc (2)stat.errorfloatScaleSkew normal distribution scale parameter ({omega}) (2)stat.fit.paramfloate_ScaleError on Scale (2)stat.error;instr.scalefloatShapeSkew normal distribution shape parameter ({alpha}) (2)stat.fit.paramfloate_ShapeError on Shape (2)stat.errorfloatONameMatching common name or 3C label, where availablemeta.idchar