The Ultraviolet Spectrum of the Crab Pulsar

Details The Ultraviolet Spectrum of the Crab Pulsar The Ultraviolet Spectrum of the Crab Pulsar

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995hst..prop.6290b&link_type=abstract

HST Proposal ID #6290

Physics

Hst Proposal Id #6290 Hot Stars, Neutron St

Scientific paper

The time-averaged ultraviolet spectrum of the Crab pulsar will be measured with the FOS using the G160L grating in the ACCUM mode. The grating covers from 1150 A to 2510 A at a dispersion of 6.87 A/diode. The 0.3 arcsec diameter aperture will be used in order to exclude as much as possible of the surrounding nebula. The observed spectrum will be corrected for interstellar extinction; It will be necessary to investigate whether a standard interstellar extinction curve is appropriate for the pulsar. The expected results are: 1) A measurement of the ultraviolet spectrum from the Crab pulsar. 2) A measurement of the interstellar extinction to the Crab pulsar, and a measurement of -- or a limit on -- any difference between the extinction of the pulsar and the extinction of the surrounding nebula. This will allow some estimates of the internal extinction in the nebula. 3) A measurement of the de-extincted ultraviolet spectrum from the pulsar and thus a measurement of the slope of the spectrum.

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