Timing the New 120-S X-Ray Pulsar Igr J18246-1425
Abstract
Recently, a new 120-s X-ray pulsar was detected in the PCA bulge scans as well as in monitoring observations of the source LS5039. This new pulsar (XTE J1824-141; ATel #1679) has been identified with a cataloged INTEGRAL source IGR J18246-1425 (ATel #1680). Swift observations have refined the position determination to an accuracy of 4.3 arcsec and find that the source is 0.6 deg from LS 5039. The monitoring observations of LS 5039 continue to detect pulsations from this source, but are too sparse to determine the spin and orbital parameters. We propose RXTE observations designed to measure the orbit of the pulsar. Once this is known, we will be able to measure the spin evolution of the pulsar and search for evidence of an X-ray eclipse.
- Publication:
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RXTE Proposal
- Pub Date:
- 2008
- Bibcode:
- 2008rxte.prop94327R