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| Paper: |
15 Years Going Steady - Timing the Magnetar 1E 1841-045 |
| Volume: |
271, Neutron Stars in Supernova Remnants |
| Page: |
309 |
| Authors: |
Gotthelf, E. V.; Gavriil, F. P.; Kaspi, V. M.; Vasisht, G.; Chakrabarty, D. |
| Abstract: |
We report on long-term monitoring of 1E 1841-045, the 12 s anomalous X-ray pulsar (AXP) 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 (XTE) 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. |
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