Variability in Millisecond Pulsar Burst Oscillations

Details Variability in Millisecond Pulsar Burst Oscillations Variability in Millisecond Pulsar Burst Oscillations

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...206.4303w&link_type=abstract

American Astronomical Society Meeting 206, #43.03; Bulletin of the American Astronomical Society, Vol. 37, p.497

Astronomy and Astrophysics

Astronomy

Scientific paper

The accreting millisecond pulsar XTE J1814-338 exhibits oscillations at the known spin frequency during Type I X-ray bursts. The properties of the burst oscillations reflect the nature of the thermal asymmetry. We present an analysis of the variability of the burst oscillations of this source. We focus on three characteristics: fractional amplitude, harmonic content and frequency. Fractional amplitude and harmonic content constrain the size, shape and position of the emitting region, whilst variations in frequency indicate motion of the emitting region on the neutron star surface. We examine both long-term variability over the course of the outburst, and short-term variability during the bursts.

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