X-ray and radio timing of the pulsar in 3C 58

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Title: X-ray and radio timing of the pulsar in 3C 58
Author(s): Livingstone, Margaret A.; Ransom, Scott M.; Camilo, Fernando; Kaspi, Victoria M.; Lyne, Andrew G.; Kramer, Michael; Stairs, Ingrid H.
Abstract: We present timing data spanning 6.4 yr for the young and energetic PSR J0205+6449, in the supernova remnant 3C 58. Data were obtained with the Rossi X-ray Timing Explorer, the Jodrell Bank Observatory, and the Robert C. Byrd Green Bank Telescope. We present phase-coherent timing analyses showing timing noise and two spin-up glitches with fractional frequency increases of ~3.4 × 10–7 near MJD 52555 and ~3.8 × 10–6 between MJDs 52777 and 53062. These glitches are unusually large if the pulsar was created in the historical supernova in 1181, as has been suggested. For the X-ray timing, we developed a new unbinned maximum likelihood method for determining pulse arrival times, which performs significantly better than the traditional binned techniques. In addition, we present an X-ray pulse profile analysis of four years of RXTE data showing that the pulsar is detected up to ~40 keV. We also present the first measurement of the phase offset between the radio and X-ray pulse for this source, showing that the radio pulse leads the X-ray pulse by phi = 0.10 ± 0.01 in phase. We compile all known measurements of the phase offsets between radio and X-ray and radio and γ-ray pulses for X-ray and γ-ray pulsars. We show that there is no relationship between pulse period and phase offset, supported by our measurement of the phase offset for PSR J0205+6449.
Publication type: Journal article
Source: The Astrophysical Journal, Vol. 706, no. 2 (Dec 2009), pp. 1163-1173
Publication year: 2009
Keyword(s): Crab pulsars; Emissions; Gamma-rays; Large-area telescope; Neutron stars; PSR J0205+6449; PSR J0538+2817; Supernova remnant; Vela pulsars; X-rays
Publisher: Institute of Physics Publishing
ISSN: 0004-637X
Publisher URL: http://dx.doi.org/10.1088/0004-637X/706/2/1163
Peer reviewed