Timing, glitches and braking index of PSR B0540-69

Details Timing, glitches and braking index of PSR B0540-69 Timing, glitches and braking index of PSR B0540-69

2003-02-07

arxiv.org/abs/astro-ph/0302142v1

Astron.Astrophys. 402 (2003) 647-652

Astronomy and Astrophysics

Astrophysics

9 pages 5 figures, accepted by A&A, main journal

Scientific paper

10.1051/0004-6361:20030270

We report a pulse-time history of PSR B0540$-$69 based on the analysis of an extended Data set including ASCA, BeppoSAX and RXTE observations spanning a time interval of about 8 years. This interval includes also the epoch of the glitch episode reported by Zhang et al. (2001). Our analysis shows the presence of a relevant timing noise and does not give a clear evidence of the glitch occurrence. We performed an accurate evaluation of the main timing parameters, $\nu$, $\dot{\nu}$ and $\ddot{\nu}$ and derived a mean braking index of $n=2.125\pm0.001$ quite different from the lower value found by Zhang et al. (2001), but in rather good agreement with other several values reported in the literature.

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