A radio survey of supersoft, persistent and transient X-ray sources in the Magellanic Clouds

Abstract

We 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.

5 pages, LaTeX. Accepted for publication in MNRAS

Cited by in corpus (12)

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• The radio luminosity of persistent X-ray binaries
• Discovery of Recurring Soft to Hard State Transitions in LMC X-3
• A Photoionized Nebula Surrounding and Variable Optical Continuum Emission from the Ultraluminous X-Ray Source in NGC 5408
• X-Ray Emission from Multi-Phase Shock in the Large Magellanic Cloud Supernova Remnant N49
• A ULX microquasar in NGC 5408?
• Supernova Remnants in the Large Magellanic Clouds IX: Multiwavelength Analysis of the Physical Structure of N49
• First X-ray polarization measurement confirms the low black-hole spin in LMC X-3
• Revealing the Supernova Remnant Population of M33 with Chandra
• Prototyping non-equilibrium viscous-timescale accretion theory using LMC X-3
• A search for radio emission from Galactic supersoft X-ray sources
• Supersoft X-Ray Nebulae in the Large Magellanic Cloud