X-Ray and Optical Observations of the New X-ray Transient XTE J2123-058

Details X-Ray and Optical Observations of the New X-ray Transient XTE J2123-058 X-Ray and Optical Observations of the New X-ray Transient XTE J2123-058

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998tx19.confe.316t&link_type=abstract

Abstracts of the 19th Texas Symposium on Relativistic Astrophysics and Cosmology, held in Paris, France, Dec. 14-18, 1998. Eds.:

Astronomy and Astrophysics

Astrophysics

Scientific paper

We report on optical and RXTE observations of a new high-latitude bursting X-ray transient, XTE J2123-058. Our results include the identification of the optical counterpart and the discovery of a 5.9568 hr periodic optical modulation, which was subsequently shown to be the same as the spectroscopic orbital period. We report on spectral and timing analysis of the X-ray data, including the observation of X-ray bursts with photospheric radius expansion, from which we estimate the source distance. The X-ray variability has been studied on time scales from 0.008 to 4096 Hz, and high frequency Quasi-Periodic Oscillations (QPOs) have been detected. We also study the relationship between the optical and X-ray flux during the decline from outburst to quiescence.

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