Physics
Scientific paper
Jul 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000hst..prop.8710m&link_type=abstract
HST Proposal ID #8710
Physics
Hst Proposal Id #8710 Hot Stars
Scientific paper
PSR1929+10 is an old {Tau 10^6 yrs}, nearby { 170 pc} isolated neutron star detected as an X-ray pulsar. A possible optical counterpart has been detected by the FOC but the identification still awaits confirmation. Optical observations of neutron stars include both young { 10^3-10^4 yrs} and middle-aged { 10^5 yrs} objects for which different emission models {e.g. magnetospheric and thermal} have been proposed. However, the general picture is far from being clear. A firm optical identification of PSR1929+10 would thus be crucial to understand the long term evolution of the optical luminosity of pulsars and to investigate possible turnovers in the emission physics. Here we propose to use the STIS NUV-MAMA detector to perform time-resolved imaging of the proposed counterpart with the double aim of {i} searching for periodicity at the radio period and {ii} measuring its expected displacement { 500 mas} along the known proper motion direction of the radio pulsar. A single MAMA observation would thus provide two independent and complementary proofs to secure the optical identification of PSR1929+10.
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