J/MNRAS/298/692ivo://CDS.VizieR/J/MNRAS/298/692doi:10.26093/cds/vizier.72980692CDSFender R.P.Southwell K.A.Tzioumis A.K.2024-06-25T20:18:06Z1998-07-20T15:22:16ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsradio-astronomyx-ray-sourcesWe present a radio survey of X-ray sources in the Large and Small Magellanic clouds with the Australia Telescope Compact Array at 6.3 and 3.5 cm. Specifically, we have observed the fields of five LMC and two SMC supersoft X-ray sources, the X-ray binaries LMC X-1, X-2, X-3 & X-4, the X-ray transient Nova SMC 1992, and the soft gamma-ray repeater SGR 0525-66. None of the targets are detected as point sources at their catalogued positions. In particular, the proposed supersoft jet source RXJ 0513-69 is not detected, placing constraints on its radio luminosity compared to Galactic jet sources. Limits on emission from the black hole candidate systems LMC X-1 and X-3 are consistent with the radio behaviour of persistent Galactic black hole X-ray binaries, and a previous possible radio detection of LMC X-1 is found to almost certainly be due to nearby field sources. The SNR N49 in the field of SGR 0525-66 is mapped at higher resolution than previously, but there is still no evidence for any enhanced emission or disruption of the SNR at the location of the X-ray source. No radio point sources were detected at any wavelength at the catalogued locations of the target sources. In most cases a noise level of 50 microJy or so was achieved, making the 3-sigma upper limits very stringent indeed. The noise levels for LMC X-1 and SGR 0525-66 are considerably worse, due to their locations in radio-bright regions.1998MNRAS.298..692Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/298/692CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/298/692https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/298/692http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/298/692https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/298/692https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/298/692http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/298/692GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/298/692/list (List of images with main characteristics)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/298/692/list?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/298/692/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/298/692/list?GETtext/xml+votable180.050000true78.4616667-69.86305560.0055555555555555566/33049 33055 33088 33094 33096 33106 33113 33115 33298 33318 33328 33801https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/298/692?format=asciiX-rayRadiodefaultJ/MNRAS/298/692/listList of images with main characteristicsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFITSfile*Name of FITS file (in subdirectory "fits")meta.id;meta.filecharFrequencyObserved frequencyGHzem.freqfloatRAJ2000Right Ascension J2000 pointing centre (hours)pos.eq.ra;meta.mainDEJ2000Declination J2000 pointing centre (sign)pos.eq.dec;meta.mainNpix*Image sizepixinstr.fov;instr.pixelintpixsize*Pixel sizearcsecphys.angSize;instr.pixelfloatTarget*Name of targetmeta.id;meta.mainchar