Crab pulsar optical photometry and spectroscopy with microsecond temporal resolution

Details Crab pulsar optical photometry and spectroscopy with microsecond temporal resolution Crab pulsar optical photometry and spectroscopy with microsecond temporal resolution

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd...2e..16b&link_type=abstract

On the Present and Future of Pulsar Astronomy, 26th meeting of the IAU, Joint Discussion 2, 16-17 August, 2006, Prague, Czech Re

Astronomy and Astrophysics

Astronomy

Scientific paper

The results of fast photometry and spectroscopy of the Crab pulsar with microsecond temporal resolution are presented. The observations have been performed on William Hershel 4-m and BTA 6-m telescopes using APD avalanche photon counter and PSD panoramic photon imager. The stability of the optical pulse is analysed and the search for the variations of the pulse shape along with its arrival time stability is performed. Upper limits on the possible short time scale free precession of the pulsar and the stochastic variable optical emission component are placed. The results of the low resolution (~300 angstrom) phase-resolved spectroscopy of the pulsar emission are discussed, first of all - the distinction of the spectra of pulses and off-pulse phase intervals.

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