Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998tx19.confe.229b&link_type=abstract
Abstracts of the 19th Texas Symposium on Relativistic Astrophysics and Cosmology, held in Paris, France, Dec. 14-18, 1998. Eds.:
Astronomy and Astrophysics
Astrophysics
Scientific paper
We present results of the Crab pulsar observations at the 6m telescope in UBVR bands using the photometrical comlex MANIA (Multichannel Analysis of Nanosecond Intensity Alterations). All data are folded with the calculated values of the pulsar rotation parameters. The time resolution of resulting light curves is 3.3 microns. The detailed analysis of the pulse profiles gives shapes of the peaks, which are plateaus (with the duration less than 50 microns for the main pulse), estimations of the bridge intensity, limits for an amplitude of fine temporal (stochastic and regular) structure of the pulses. We define both phase-averaged and phase-resolved colour indices of the pulsar emission and find that colour characteristics are phase-dependent for the both pulses. This behavior is not predicted by current models of pulsar optical emission. The comparative analisys of the light curve shape over the high frequency range is undertaken.
Beskin Gregory M.
Komarova Viktoria N.
Plokhotnichenko V. L.
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