Optical pulsations from 4U 0900-40 - Do they exist

Details Optical pulsations from 4U 0900-40 - Do they exist Optical pulsations from 4U 0900-40 - Do they exist

Apr 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...229..294n&link_type=abstract

Astrophysical Journal, Part 1, vol. 229, Apr. 1, 1979, p. 294, 295. Research supported by the U.S. Department of Energy and NSF

Astronomy and Astrophysics

Astrophysics

4

B Stars, Binary Stars, Pulsars, Supergiant Stars, Ariel 5 Satellite, Polynomials, X Ray Spectra

Scientific paper

A search for optical pulsations from 4U 0900-40 (HD 77581) was made in 1977-1978 using H-beta interference filters. No pulsations were detected above 0.001 of the observed flux. This contrasts with Steiner's detection of pulsations at the 2 percent level. Ariel 5 data covering both the present observations and Steiner's show that X-ray variability does not support this discrepancy.

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