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Article overview
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Pulse Profile Change Possibly Associated with a Glitch in an Anomalous X-Ray Pulsar 4U 0142+61 | Mikio Morii
; Nobuyuki Kawai
; Noriaki Shibazaki
; | Date: |
4 Dec 2004 | Journal: | Astrophys.J. 622 (2005) 544-548 | Subject: | astro-ph | Abstract: | We report a glitch-like pulse frequency deviation from the simple spin-down law in an anomalous X-ray pulsar (AXP) 4U 0142+61 detected by ASCA observations. We also found a significant pulse profile change after the putative glitch. The glitch parameters resemble those found in another AXP 1RXS J170849.0$-$400910, in the Vela pulsar, and in other radio pulsars. This suggests that the radio pulsars and AXPs have the same internal structure and glitch mechanism. It must be noted, however, that the pulse frequency anomaly can also be explained by a gradual change of the spin-down rate ($dot{P}$) without invoking a glitch. | Source: | arXiv, astro-ph/0412106 | Services: | Forum | Review | PDF | Favorites |
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