Far-UV Spectrum and Pulsations of PSR 0656+14: Thermal vs. Nonthermal

Details Far-UV Spectrum and Pulsations of PSR 0656+14: Thermal vs. Nonthermal Far-UV Spectrum and Pulsations of PSR 0656+14: Thermal vs. Nonthermal

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003hst..prop.9797p&link_type=abstract

HST Proposal ID #9797

Computer Science

Hst Proposal Id #9797 Hot Stars

Scientific paper

The brightest middle-aged pulsar PSR 0656+14 has been studied at near-IR/optical/near-UV and X-ray wavelengths. Its multiwavelength spectral distribution indicates that both surface thermal emission and nonthermal magnetospheric processes are contributing to the observed radiation. To separate the thermal and nonthermal components and investigate their properties, we propose to study the spectrum and pulsations of the pulsar with the STIS/FUV-MAMA detector in the wavelength range 1150--1700 AA, where it has never been observed. Combined with the previous HST and X-ray measurements of this pulsar, this study will go a long way toward quantifying thermal evolution of neutron stars, constraining the composition and equation of state of the superdense matter in the neutron star interiors, and understanding the acceleration and radiation mechanisms in pulsar magnetospheres.

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