NASA NTRS · 19770061312
A1540-53, an eclipsing X-ray binary pulsator
Abstract
An eclipsing X-ray binary pulsator consistent with the location of A1540-53 has been observed. The source pulse period was 528.93 + or - 0.10 s. The binary nature is confirmed by a Doppler curve for the pulsation period. The eclipse angle of 30.5 + or - 3 deg and the 4-hour transition to and from eclipse suggest an early-type giant or supergiant primary star.
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Becker, R. H., Swank, J. H., Boldt, E. A., Holt, S. S., Serlemitsos, P. J., Pravdo, S. H., Saba, J. R.. 1977-08-15. A1540-53, an eclipsing X-ray binary pulsator. https://ntrs.nasa.gov/citations/19770061312
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