2003/07/31 by V. M. Kaspi, F. P. Gavriil · 9 citations
Earth and Planetary Sciences · Physics and Astronomy · #Astrophysical Phenomena and Observations #High-pressure geophysics and materials #Pulsars and Gravitational Waves Research #astro-ph
paper · pdf · doi:10.1086/379093
13 pages, 2 figures. Revised manuscript and Fig 1 following refereeing. Accepted for publication in ApJL Aug 15
arxiv created 2003/08/19 · openalex publication_date 2003/09/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
We report on 5.4 yr of phase-coherent timing, using the Rossi X-Ray Timing Explorer, of the X-ray pulsar 1RXS J170849.0-4000910 (1RXS J1708-4009), a member of the class known as "anomalous X-ray pulsars." This object exhibited a rotational glitch in 1999. Here we report a second, much larger rotational glitch that occurred ~1.5 yr after the first. We show that the recoveries from the two glitches are significantly different, with the first showing only a possible slow, approximately linear recovery, while the second showed a nearly complete recovery on a timescale of ~50 days. The approximately exponential recovery timescale of the second glitch is similar to that seen recently in 1E 2259+586 at the time of a major outburst. This suggests that 1RXS J1708-4009 undergoes similar bursting behavior, although with our sparse observations we have detected no other evidence of bursts from this source.