New outburst of SAX J1808.4-3658

Details New outburst of SAX J1808.4-3658 New outburst of SAX J1808.4-3658

Oct 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002atel..110....1m&link_type=abstract

The Astronomer's Telegram, #110

Astronomy and Astrophysics

Astronomy

X-Ray, Binaries, Neutron Stars, Pulsars, Transients

Scientific paper

The authors report the discovery of a new outburst of the first known millisecond accreting pulsar SAX J1808.4-3658. In RXTE PCA scans of the galactic center performed on Oct 13.279 (UT), an X-ray source whose position is consistent with SAX J1808.4-3658 was detected with a flux of 65 mCrab (2-10 keV). On Oct 9.5 the PCA flux was less than 0.5 mCrab. Two minutes of pointed data were obtained, in which X-ray pulsations were detected at the frequency 400.953 +/- 0.008 Hz (barycentered).

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