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Swift/XRT observations of the neutron-star X-ray transient SAX J1810.8-2609

Nathalie Degenaar, M. Klein Wolt, Rudy A. D. Wijnands

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Abstract

Following reports of renewed activity of the neutron-star X- ray transient SAX J1810.8-2609 (GCN 6706 and 6707), we triggered our Swift monitoring program on very-faint X-ray transients when in outburst. As part of this program, SAX J1810.8-2609 is currently observed on a daily basis with Swift using ~1 ksec exposures, starting August 6, 2007. In all our observations so far, the source X-ray spectrum can be fit using an absorbed powerlaw model with a hydrogen column density of Nh~0.5E22 cm2 and a powerlaw index of ~2.

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What this paper is about

Following reports of renewed activity of the neutron-star X- ray transient SAX J1810.8-2609 (GCN 6706 and 6707), we triggered our Swift monitoring program on very-faint X-ray transients when in outburst. As part of this program, SAX J1810.8-2609 is currently observed on a daily basis with Swift using ~1 ksec exposures, starting August 6, 2007. In all our observations so far, the source X-ray spectrum can be fit using an absorbed powerlaw model with a hydrogen column density of Nh~0.5E22 cm2 and a powerlaw index of ~2.

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Available abstract

Following reports of renewed activity of the neutron-star X- ray transient SAX J1810.8-2609 (GCN 6706 and 6707), we triggered our Swift monitoring program on very-faint X-ray transients when in outburst. As part of this program, SAX J1810.8-2609 is currently observed on a daily basis with Swift using ~1 ksec exposures, starting August 6, 2007. In all our observations so far, the source X-ray spectrum can be fit using an absorbed powerlaw model with a hydrogen column density of Nh~0.5E22 cm2 and a powerlaw index of ~2.

Key concepts: Swift, Neutron, X-ray, Neutron star, Physics, X-ray transient, Astrophysics, Nuclear physics

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