The Nearest Neutron Stars

Details The Nearest Neutron Stars The Nearest Neutron Stars

Apr 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996cuny.reptq....h&link_type=abstract

Technical Report, Columbia Univ. New York, NY United States Dept. of Astronomy.

Astronomy and Astrophysics

Astronomy

Extreme Ultraviolet Explorer Satellite, Seyfert Galaxies, Pulsars, X Ray Spectra, X Ray Sources, Spaceborne Astronomy, X Ray Astronomy, Light Curve, Sky Surveys (Astronomy)

Scientific paper

Extreme Ultraviolet Explorer (EUVE) satellite observations of the Pulsar PSR J0437-4715, the Seyfert Galaxy RX J0437.4-4711, and the Geminga Pulsar are reported on. The main purpose of the PSR J0437-4715 investigation was to examine its soft X-ray flux. The 20 day EUVE observation of RX J0437.4-4711 constitutes a uniformly sampled soft X-ray light curve of a highly variable Seyfert galaxy whose power spectrum can be examined on timescales from 3 hrs. to several days. A unique aspect of the EUVE observation of RX J0437.4-4711 is its long light curve which we have used to measure the power spectrum of soft X-ray variability at low frequencies. Approximately 2100 counts were detected for the Geminga pulsar in a period of 251,000 s by the EUVE Deep Survey instrument. Geminga presents an unusually difficult problem because its multicomponent X-ray spectrum and pulse profile are indicative of a complex distribution of surface emission, and possibly a contribution from nonthermal emission as well.

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