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Published in

Oxford University Press, Monthly Notices of the Royal Astronomical Society, 4(517), p. 5406-5412, 2022

DOI: 10.1093/mnras/stac2883

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TRAPUM upper limits on pulsed radio emission for SMC X-ray pulsar J0058−7218

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Postprint: archiving allowed
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Data provided by SHERPA/RoMEO

Abstract

ABSTRACT The TRAPUM collaboration has used the MeerKAT telescope to conduct a search for pulsed radio emission from the young Small Magellanic Cloud pulsar J0058−7218 located in the supernova remnant IKT 16, following its discovery in X-rays with XMM–Newton. We report no significant detection of dispersed, pulsed radio emission from this source in three 2-h L-band observations using the core dishes of MeerKAT, setting an upper limit of 7.0 $μ$Jy on its mean flux density at 1284 MHz. This is nearly seven times deeper than previous radio searches for this pulsar in Parkes L-band observations. This suggests that the radio emission of PSR J0058−7218 is not beamed towards Earth or that PSR J0058−7218 is similar to a handful of Pulsar Wind Nebulae systems that have a very low radio efficiency, such as PSR B0540−6919, the Large Magellanic Cloud Crab pulsar analogue. We have also searched for bright, dispersed, single radio pulses and found no candidates above a fluence of 93 mJy ms at 1284 MHz.