Characteristics of the Oscillations during Type-I X-Ray Bursts

Details Characteristics of the Oscillations during Type-I X-Ray Bursts Characteristics of the Oscillations during Type-I X-Ray Bursts

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...19110007z&link_type=abstract

American Astronomical Society, 191st AAS Meeting, #100.07; Bulletin of the American Astronomical Society, Vol. 29, p.1370

Astronomy and Astrophysics

Astronomy

Scientific paper

Photon flux intensity oscillations with frequencies in the range of 300 to 600 Hz have been observed during the Type-I bursts of at least 5 low mass X-ray binaries. These oscillations have two distinct characteristics: (1) they are highly coherent with Q-values on the order of 10(2) to 10(3) ; and (2) their frequencies remain constant from burst to burst for a given source. These characteristics strongly support the interpretation that these oscillations reflect the spin rates of the neutron stars in these systems. These oscillations are most likely due to non-uniform nuclear burning on the stellar surface. Therefore they can be appropriately called nuclear powered X-Ray pulsars. In this paper we will present details of oscillations of several bursts observed from 4U 1728-34 and 4U 1636-53.

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