Discovery of 245 Hz burst oscillations from the accreting millisecond pulsar IGR J17511-3057

Details Discovery of 245 Hz burst oscillations from the accreting millisecond pulsar IGR J17511-3057 Discovery of 245 Hz burst oscillations from the accreting millisecond pulsar IGR J17511-3057

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009atel.2199....1w&link_type=abstract

The Astronomer's Telegram, #2199

Astronomy and Astrophysics

Astronomy

12

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

Scientific paper

RXTE observations of the bursting accreting millisecond X-ray pulsar IGR J17511-3057 (ATEL #2196, #2197, #2198) showed a short Type I X-ray burst on September 14th 2009. We detect strong burst oscillations at 245 Hz, very close to the spin frequency. Maximum Leahy power is in the range 130-215 in 3 independent consecutive 4s bins during the burst (using all photons in the 2-60 keV band), putting the detection beyond doubt.

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