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arXiv · 1803.10277

A Long-term study of three rotating radio transients

B. Bhattacharyya·A. G. Lyne·B. W. Stappers·P. Weltevrede·E. F. Keane·M. A. McLaughlin·M. Kramer·C. Jordan·C. Bassa
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Abstract

We present the longest-term timing study so far of three Rotating Radio Transients (RRATs) - J1819-1458, J1840-1419 and J1913+1330 - performed using the Lovell, Parkes and Green Bank telescopes over the past decade. We study long-term and short- term variations of the pulse emission rate from these RRATs and report a marginal indication of a long-term increase in pulse detection rate over time for PSR J1819-1458 and J1913+1330. For PSR J1913+1330, we also observe a two orders of magnitude variation in the observed pulse detection rates across individual epochs, which may constrain the models explaining the origin of RRAT pulses. PSR J1913+1330 is also observed to exhibit a weak persistent emission mode. We investigate the post-glitch timing properties of J1819-1458 (the only RRAT for which glitches are observed) and discuss the implications for possible glitch models. Its post-glitch over-recovery of the frequency derivative is magnetar-like and similar behaviour is only observed for two other pulsars, both of which have relatively high magnetic field strengths. Following the over-recovery we also observe that some fraction of the pre-glitch frequency derivative is gradually recovered.

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B. Bhattacharyya, A. G. Lyne, B. W. Stappers, P. Weltevrede, E. F. Keane, M. A. McLaughlin, M. Kramer, C. Jordan, C. Bassa. 2018-04-11. A Long-term study of three rotating radio transients. https://doi.org/10.1093/mnras%2Fsty923

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