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15 Years Going Steady - Timing the Magnetar 1E 1841-045 | E. V. Gotthelf
; F. P. Gavriil
; V. M. Kaspi
; G. Vasisht
; Deepto Chakrabarty
; | Date: |
2 Dec 2001 | Subject: | astro-ph | Affiliation: | Columbia), F. P. Gavriil, V. M. Kaspi (McGill), G. Vasisht (JPL), Deepto Chakrabarty (MIT | Abstract: | We report on a long-term monitoring campaign of 1E 1841-045, the 12-s anomalous X-ray pulsar and magnetar candidate at the center of the supernova remnant Kes 73. We have obtained approximately monthly observations of the pulsar with the Rossi X-ray Timing Explorer spanning over two years, during which time 1E 1841-045 is found to be rotating with sufficient stability to derive a phase-connected timing solution. A linear ephemeris is consistent with observations of the pulse period made over the last 15 yrs with the Ginga, ASCA, XTE, & SAX observatories. Phase residuals suggest the presence of "timing noise", as is typically observed from young radio pulsars. These results confirm a rapid, constant spin-down for the pulsar, which continues to maintain a steady flux; this is inconsistent with most accretion scenarios. | Source: | arXiv, astro-ph/0112019 | Services: | Forum | Review | PDF | Favorites |
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