Infrared Radiation from Middle-Aged Pulsars

Details Infrared Radiation from Middle-Aged Pulsars Infrared Radiation from Middle-Aged Pulsars

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997hst..prop.7836p&link_type=abstract

HST Proposal ID #7836

Computer Science

Hst Proposal Id #7836 Hot Stars High-Mass Stars

Scientific paper

We have studied several middle-aged pulsars in detail at optical and ultraviolet wavelengths. Their spectral distributions indicate that both surface thermal emission and nonthermal magnetospheric processes are present. These components need to be resolved before reliable tests of theories of neutron-star cooling and nonthermal evolution can be made. The nonthermal component was unexpected theoretically, and it is clear that it will dominate in the near infrared. We propose to measure the IR fluxes of two middle-aged pulsars, 0656+14 and Geminga, with three broad- band filters. This will enable us to determine the slope of the nonthermal components of their radiation, to pin down the intensity of the thermal component, and to understand the origin of certain spectral features which have apparently been observed in their optical spectra and attributed to ion- cyclotron resonances.

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