Confirmation of glitch event detected in PSR J1740-3015 using the upgraded Giant Metrewave Radio Telescope (uGMRT)
ATel #15851; Himanshu Grover (IIT Roorkee, India), Jaikhomba Singha (IIT Roorkee, India), Bhal Chandra Joshi (NCRA-TIFR, India), Paramasivan Arumugam (IIT Roorkee, India), Erbil Gugercinoglu (Sabanci University, Istanbul, Turkey), Debades Bandyopadhyay (SINP, India), Shantanu Desai (IITH, India), Sarmistha Banik (BITS-Hyd, India), Innocent Eya (UNN, Nigeria), James Chibueze (NW University, South Africa), Johnson Urama (UNN, Nigeria), Anu Kundu (NW University, South Africa)
on 8 Jan 2023; 16:56 UT
Credential Certification: Jaikhomba Singha (mjaikhomba@gmail.com)
Our monitoring program observes several high glitch rate pulsars using the upgraded Giant Metrewave Radio Telescope (uGMRT) and the Ooty radio telescope (ORT) in India.
We confirm the presence of a glitch in PSR J1740-3015, reported by Zubieta et al. (ATel #15838) and Dunn et al. (ATel #15839). The glitch has been detected using the uGMRT. The observations are carried out in band 4 of the uGMRT with a central frequency of 750 MHz and a bandwidth of 400 MHz. Our preliminary analysis reveals that the fractional spin-up in the rotational frequency, DeltaF0/F0 is 335 (6) E-9, and the glitch epoch is MJD 59935.12+/-0.04.
PSR J1740-3015 is a middle-aged pulsar known to show recovery of timescales ranging from a few days to a few weeks, and a high-cadence observation would be helpful to understand the glitch mechanism. We will continue to monitor this pulsar and encourage other monitoring programs to continue follow-up observations.
We thank the staff of the GMRT who made our observations possible. GMRT is run by the National Centre for Radio Astrophysics of the Tata Institute of Fundamental Research.
Residual plot for a glitch in PSR J1740-3015
