Computer Science
Scientific paper
Jul 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994hst..prop.5377c&link_type=abstract
HST Proposal ID #5377
Computer Science
Hst Proposal Id #5377 Hot Stars Neutron Stars
Scientific paper
We propose to make UV observations of three nearby pulsars - PSR 0656+14, PSR 0950+08 and PSR 1929+10. The former one is a relatively young soft X-ray pulsar which shows the highest intensity of the soft X-ray flux and has a thermal-like spectrum. The latter two are the nearest old radio and soft X-ray pulsars. None of these objects have been imaged in the UV. Preliminary estimates of their surface temperatures, made with the aid of X-ray observations and theoretical cooling scenarios, indicate they should be sufficiently hot objects, and their thermal-like UV radiation should be observable with the HST Faint Object Camera. The UV spectra, together with the soft X-ray spectra, will be fitted with a new generation of neutron star atmosphere models that we are developing. This will allow us to determine parameters of the atmospheres (effective temperature, magnetic field, chemical composition), to study the thermal evolution of neutron stars and to investigate properties of the super-high-density matter in their interiors.
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