Millisecond Oscillations in Thermonuclear X-ray Bursts

Details Millisecond Oscillations in Thermonuclear X-ray Bursts Millisecond Oscillations in Thermonuclear X-ray Bursts

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..aprn17096m&link_type=abstract

American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As

Astronomy and Astrophysics

Astrophysics

Scientific paper

The RXTE/PCA has observed millisecond oscillations during thermonuclear bursts from 9 different low mass X-ray binaries. In contrast to previous work, we present here for the first time a comprehensive study of the full sample of more than 60 oscillations. We first describe the frequency evolution of the oscillations using a phase-connection method common to pulser timing studies, in order to establish how coherent the oscillations are, and whether they evolve to a stable frequency. We then report how the amplitude of the oscillations evolves with time, and search for Doppler and time-delay effects that have previously been reported in the energy-resolved waveforms. We compare the data to theoretical models in which the oscillations originate from a hot spot on the surface of a rotating neutron star.

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