Detection of a glitch event in PSR J0742-2822 observed using the Automated Glitch Detection Pipeline implemented at the Ooty Radio Telescope (ORT)
ATel #15629; Himanshu Grover (IIT Roorkee, India), Jaikhomba Singha (IIT Roorkee, India), Bhal Chandra Joshi (India), Paramasivan Arumugam (IIT Roorkee, India)
on 25 Sep 2022; 02:45 UT
Distributed as an Instant Email Notice Transients
Credential Certification: Bhal Chandra Joshi (bcj@ncra.tifr.res.in)
Subjects: Radio, Neutron Star, Transient, Pulsar
We confirm the detection of a large glitch in pulsar J0742-2822/B0740-28, recently reported by Shaw et al. (ATel #15622). Our preliminary analysis shows that the glitch epoch is MJD 59839.4+/-0.2, and the fractional spin up in the rotational frequency, DeltaF0/F0 is 4312 (9) E-9.
The presence of a glitch is alerted by the real-time Automated Glitch Detection Pipeline (Singha et al., 2021) implemented at the Ooty Radio Telescope (ORT). We will continue to monitor the pulsar as the follow-up observations would be very useful for understanding the glitch recovery and other radiative changes in the pulsar. We encourage other motoring programs to do the same.
[1] Singha, J., Basu, A., Krishnakumar, M. A., Joshi, B. C., and Arumugam, P. (2021). A real-time automated glitch detection pipeline at Ooty Radio Telescope. Monthly Notices of the Royal Astronomical Society, 505(4):5488-5496.
Residual plot for a large glitch in PSR J0742-2822
