Discovery of 27 new Rotating Radio Transients by MeerTRAP

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ID: 324828
2026
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Abstract
Abstract We present the discovery of 27 new Galactic transients made by the commensal MeerTRAP single pulse search programme at the MeerKAT telescope. We determine the location of 14 of these discoveries with arcsecond accuracy by imaging the data captured in the dedicated transient buffer. A preliminary estimate of the period was made for 8 sources using the arrival times of several pulses detected by MeerTRAP. The periods of these transients range between 0.78 s and 4 s. For the previously published MeerTRAP source MTP0040 (PSR J1357−6507), we are able to provide the position and period using new pulses detected since it was reported. We also estimate the radio fluences and discuss the burst rates derived from the commensal search detections. The accurate image-domain localizations were used to conduct follow-up observations and timing analysis. Furthermore, some follow-up observations revealed ordinary pulsar-like pulsed behavior for four of the new sources, illustrating the blurred separation between rotating radio transients and canonical pulsars. We also present coherent timing solutions for 4 sources, providing insight into their rotational properties and their place within the Galactic neutron star population.
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Authors S Singh, J Tian, B. W. Stappers, K Shaji, Kaustubh Rajwade, L Levin, John D. Turner, M C Bezuidenhout, M Caleb, I Pastor-Marazuela, F. Jankowski, R Karuppusamy, E D Barr, M. Kramer, R. P. Breton, C. J. Clark, T Thongmeearkom, M. Burgay
Journal monthly notices of the royal astronomical society
Year 2026
DOI
10.1093/mnras/stag1538
URL
https://doi.org/10.1093/mnras/stag1538
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