The proper motion of Geminga's optical counterpart

Details The proper motion of Geminga's optical counterpart The proper motion of Geminga's optical counterpart

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993natur.361..704b&link_type=abstract

Nature (ISSN 0028-0836), vol. 361, no. 6414, p. 704-706.

Astronomy and Astrophysics

Astronomy

75

Cos-B Satellite, Gamma Ray Astronomy, Neutron Stars, Pulsars, Sas-2, Stellar Motions, Faint Objects, Spaceborne Astronomy, Variable Stars, X Ray Sources

Scientific paper

The association of the gamma-ray source Geminga with the peculiar X-ray source 1E0630+178 has been confirmed through the discovery of a 237-msec periodicity in the latter's soft X-ray emission. A comparison is presently made between a 1992 image of Geminga's proposed optical counterpart, G-double-prime, with data obtained in 1984 and 1987; the proper motion is 0.17 arcsec/year, consistent with the identification of G-double-prime as a neutron star at a distance of about 100 pc and confirming it as Geminga's optical counterpart.

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