Confirmation of glitch event observed in the Vela pulsar (PSR J0835-4510)
ATel #14807; L. Dunn (University of Melbourne, "UMelb"), D. Campbell-Wilson (Woodchester Observatory), C. Flynn (SUT), G. Howitt (UMelb), Y. S. C. Lee (UMelb), A. Melatos (UMelb), P. Meyers (UMelb), M. Bailes (Swinburne University of Technology, "SUT"), T. Bateman (SUT), C. Day (SUT), A. Deller (SUT), A. J. Green (University of Sydney), V. Gupta (SUT), A. Jameson (SUT), M. E. Lower (SUT), A. Mandlik (SUT), D. C. Price (SUT), R. Sekhri (Alphington Grammar School), A. Sutherland (SUT), G. Torr (SUT), G. Urquhart (SUT)
on 24 Jul 2021; 06:41 UT
Credential Certification: Vivek Gupta (vivekgupta@swin.edu.au)
At Molonglo Observatory Synthesis Radio Telescope (MOST) near Canberra, Australia, we carry out a pulsar timing programme in which we observe a large number of pulsars with near-daily cadence, as part of the UTMOST project (Bailes et al. 2017). Observations are at a central frequency of 831 MHz and with a bandwidth of 45 MHz.
We confirm the detection of a glitch in PSR J0835-4510, recently reported by Sosa-Fiscella et al. (ATel #14806). Our first post-glitch observation was taken at MJD 59418.11 (2021-07-23 UTC). Our preliminary analysis shows a change in its rotation frequency on MJD 59417.628 +/- 0.002 (2021-07-22 UTC) by delta F0/F0 = (1.26 +/- 0.03) E-6.
The glitch was also confirmed at Woodchester Observatory's 6-meter radio telescope (located near Adelaide, Australia), operating at 820 MHz with a bandwidth of 7 MHz. Observations before and after the glitch were made at MJD 59417.14 and MJD 59418.13.
We will continue to monitor the pulsar and we encourage other observers to help resolve the pulsar's glitch recovery.
References:
Bailes, M, et al., 2017, PASA, 34 e045.
UTMOST research webpage
