The continuing search for the optical counterpart of the enigmatic X-ray pulsar 1E2259+586

Details The continuing search for the optical counterpart of the enigmatic X-ray pulsar 1E2259+586 The continuing search for the optical counterpart of the enigmatic X-ray pulsar 1E2259+586

Nov 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.259..191c&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 259, no. 1, p. 191-202.

Astronomy and Astrophysics

Astronomy

18

Astronomical Spectroscopy, Pulsars, Supernova Remnants, X Ray Binaries, Image Processing, Stellar Luminosity, X Ray Imagery

Scientific paper

We present a reanalysis of the Einstein X-ray images and new optical spectroscopy of the candidates for the X-ray pulsar 1E2259+586. Although we are not able to identify conclusively the optical counterpart, the very faint limit found for its brightness implies that the secondary star in a low-mass X-ray binary system cannot be brighter than a main-sequence K star. We identify faint diffuse knots of X-ray emission aligned with the pulsar in the Einstein HRI image, again raising the possibility of a jet, and strengthening the association of the pulsar with the supernova remnant. Further implications of our results are discussed.

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