Optical pulsations from 4U 1626-67 discovered with the ESO 3.6 m telescope.

Details Optical pulsations from 4U 1626-67 discovered with the ESO 3.6 m telescope. Optical pulsations from 4U 1626-67 discovered with the ESO 3.6 m telescope.

Sep 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978msngr..14...17i&link_type=abstract

The Messenger, vol. 14, p. 17-18

Other

Magellanic Clouds:X-Ray Sources, Optical Pulsations:X-Ray Sources

Scientific paper

A little over a year ago, Drs. Claude Chevalier and Sergio Il0vaisky reported the optical identification of the X-ray source LMC X-4 (cf. Messenger No. 9, p. 4). Now, together with Dr. Christian Motch, also from Observatoire de Meudon, France, they have succeeded in measuring optical pulses in a 19m star with the same 'period as the southern X-ray source 4U 1626-67, and therefore identical with this source. To obtain a high time-resolution, O~8, it was necessary to use the 3.6 m telescope. Contrary to other X-ray sourees, no Doppler shift has yet been detected in 4U 1626-67.

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