Swift and RXTE observations of the on-going outburst of the accreting ms pulsar SAX J1808.4-3658

Details Swift and RXTE observations of the on-going outburst of the accreting ms pulsar SAX J1808.4-3658 Swift and RXTE observations of the on-going outburst of the accreting ms pulsar SAX J1808.4-3658

Nov 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011atel.3736....1p&link_type=abstract

The Astronomer's Telegram, #3736

Astronomy and Astrophysics

Astronomy

1

X-Ray, Binary, Neutron Star, Transient, Pulsar

Scientific paper

After the announcement of a new outburst of the 401 Hz accreting ms pulsar SAX J1808.4-3658 (Markwardt et al. 2011, ATel #3733), follow-up observations were performed by Swift and RXTE. A Swift observation performed in WT mode started on 2011 November 4.660 for an exposure of 1.0 ks. The 1.0-10 keV spectrum (only grade 0 photons) is dominated by a power law with photon index of 2.27(8) absorbed by a medium with nH=0.20(2)E22 cm**-2, a value compatible with that observed during past outbursts of the source (e.g., Papitto et al.

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