Discovery of kilohertz quasi-periodic oscillations from EXO 1745-248

Details Discovery of kilohertz quasi-periodic oscillations from EXO 1745-248 Discovery of kilohertz quasi-periodic oscillations from EXO 1745-248

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010atel.2935....1m&link_type=abstract

The Astronomer's Telegram, #2935

Astronomy and Astrophysics

Astronomy

1

X-Ray, Request For Observations, Binary, Globular Cluster, Neutron Star, Transient, Pulsar

Scientific paper

The current outburst (ATEL #2919) of a transient X-ray source in Terzan 5, which is plausibly EXO 1745-248 (ATEL #2920; but see ATEL #2933), provides motivation for archival data analysis of EXO 1745-248. In the archival RXTE PCA data of 2000-09-30 (T15:29:24 to T16:24:09; ObsId 50054-06-11-00), an extremely strong kHz QPO at ~690+-23 Hz with a fractional rms amplitude of ~0.08 has been detected. To the best of our knowledge, this is the first high frequency feature detected from EXO 1745-248.

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