RXTE Discovery of the Spin Period of Swift J1834.9-0846

Details RXTE Discovery of the Spin Period of Swift J1834.9-0846 RXTE Discovery of the Spin Period of Swift J1834.9-0846

Aug 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011atel.3542....1g&link_type=abstract

The Astronomer's Telegram, #3542

Astronomy and Astrophysics

Astronomy

1

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

Scientific paper

RXTE/PCA observed the new source, Swift J1834.9-0846 (D'Elia et al. GCN Circ. 12253, Guiriec et al. 12255) on 2011 August 9-10, for a net exposure time of 9.7 ks. We performed a timing analysis using the barycentered photon arrival times in the 2-10 keV band and detected a coherent pulsation at 0.402853(2) Hz which corresponds to a spin period of 2.482295 s. Note that an earlier PCA observation on 2011 August 9 of the same field with a 3.4 ks exposure did not reveal the pulsed signal clearly but it does confirm the signal at a consistent frequency.

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