SGR 1822-1606 (Swift 1822.3-1606): Spin-down rate and inferred dipole field strength

Details SGR 1822-1606 (Swift 1822.3-1606): Spin-down rate and inferred dipole field strength SGR 1822-1606 (Swift 1822.3-1606): Spin-down rate and inferred dipole field strength

Jul 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011atel.3503....1g&link_type=abstract

The Astronomer's Telegram, #3503

Astronomy and Astrophysics

Astronomy

2

X-Ray, Neutron Star, Soft Gamma-Ray Repeater

Scientific paper

We have been monitoring the new source Swift 1822.3-1606 (Cummings et al. GCN 12159) with RXTE. We acquired a total exposure of 20.6 ks in 5 pointings, spanning a time baseline of 5 days. We clearly detect the 8.44 s pulsations reported earlier (Pagani et al. ATel #3489, Gogus et al ATel #3491, Rea et al Atel #3501). We employed an epoch folding technique to determine the spin ephemeris. Our preliminary analysis reveal the spin period, P = 8.4377158(9) s and the spin-down rate, Pdot = 2.2(5) x 10-11 s/s (Epoch: 55758.5 MJD).

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