Discovery of burst oscillations in the intermittent accretion-powered millisecond pulsar HETE J1900.1-2455

Details Discovery of burst oscillations in the intermittent accretion-powered millisecond pulsar HETE J1900.1-2455 Discovery of burst oscillations in the intermittent accretion-powered millisecond pulsar HETE J1900.1-2455

2009-04-15

arxiv.org/abs/0904.2383v1

Astrophys.J.698:L174-L177,2009

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

4 pages, 4 figures, submitted to ApJ Letters

Scientific paper

10.1088/0004-637X/698/2/L174

We report the discovery of burst oscillations from the intermittent accretion-powered millisecond pulsar (AMP) HETE J1900.1-2455, with a frequency approximately 1 Hz below the known spin frequency. The burst oscillation properties are far more similar to those of the non-AMPs and Aql X-1 (an intermittent AMP with a far lower duty cycle), than those of the AMPs SAX J1808.4-3658 and XTE J1814-338. We discuss the implications for models of the burst oscillation and intermittency mechanisms.

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