Results of 23 yr of Pulsar Timing of PSR J1453-6413

TL;DR

This study presents 23 years of pulsar timing data for PSR J1453-6413, revealing three glitches, exponential recovery after the first glitch, and changes in pulse profile components, contributing to understanding pulsar magnetosphere fluctuations.

Contribution

It provides the longest timing dataset for PSR J1453-6413, detects new glitches, and analyzes their recovery and pulse profile changes using advanced timing analysis methods.

Findings

Detected three glitches over 23 years.

Observed exponential recovery with a 200-day timescale after the first glitch.

Noted changes in pulse profile components post-second glitch.

Abstract

In this paper, we presented the 23.3 years of pulsar timing results of PSR J1456-6413 based on the observation of Parkes 64m radio telescope. We detected two new glitches at MJD 57093(3) and 59060(12) and confirmed its first glitch at MJD 54554(10). Using the "Cholesky" timing analysis method, we have determined its position, proper motion, and two-dimensional transverse velocities from the data segments before and after the second glitch, respectively. Furthermore, we detected exponential recovery behavior after the first glitch, with a recovery time scale of approximately 200 days and a corresponding exponential recovery factor Q of approximately 0.15(2), while no exponential recovery was detected for the other two glitches. More interestingly, we found that the leading component of the integral pulse profile after the second glitch became stronger, while the main component became weaker. Our results will expand the sample of pulsars with magnetosphere fluctuation triggered by the glitch event.