The discovery of proper motion of Geminga's optical counterpart.

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

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ncimc..16..651m&link_type=abstract

Nuovo Cimento C, Vol. 16, N. 5, p. 651 - 654

Physics

Pulsars: Proper Motions, Pulsars: Gamma-Ray Sources, Optical Counterparts: Gamma-Ray Sources

Scientific paper

After reviewing the evidence that the X/γ-ray source 1E0630+178/Geminga is a relatively young, isolated neutron star similar to the Vela pulsar, the authors present their recent discovery of the proper motion of its faint optical counterpart. This measurement confirms the proposed optical identification, and suggests a distance of the order of 100 pc, consistent with the upper limits derived from the Geminga high-energy emission. The hypothetical nearby supernova event which originated Geminga about 350000 years ago is also briefly discussed.

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