Stability of Burst Oscillations in 4u 1702-429

Details Stability of Burst Oscillations in 4u 1702-429 Stability of Burst Oscillations in 4u 1702-429

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002nmgm.meet.2224s&link_type=abstract

"THE NINTH MARCEL GROSSMANN MEETING On Recent Developments in Theoretical and Experimental General Relativity, Gravitation and R

Physics

Scientific paper

High amplitude X-ray brightness oscillations during thermonuclear X-ray bursts were discovered with the Rossi X-ray Timing Explorer (RXTE) in early 1996. Spectral and timing evidence strongly support the conclusion that these oscillations are caused by rotational modulation of the burst emission. If rotation sets the observed frequency the oscillations should be stable over long timescales (years). Here I present a comparison of oscillations in a pair of bursts from the LMXB 4U 1702-429 which ocurred ~ 4 years apart. The time vs frequency tracks, as well as the highest frequency along the track are nearly identical. This further supports the need for a highly stable frequency such as rotation for the burst oscillations.

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