Photometric Observations of Small-Amplitude Variations in Crab Pulsar Light-Curve on Short Time-Scales

Details Photometric Observations of Small-Amplitude Variations in Crab Pulsar Light-Curve on Short Time-Scales Photometric Observations of Small-Amplitude Variations in Crab Pulsar Light-Curve on Short Time-Scales

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997cokon.100..425g&link_type=abstract

Communications of the Konkoly Observatory, No. 100 (Vol. XII, 2), p. 425-429 (1997)

Physics

Scientific paper

During the last three years, we developed an optical stroboscopic observing device which enables us to precisely measure the possible variations in Crab pulsar optical light-curve. We observed Crab with our apparatus and Asiago 1.82m telescope twice (in December 1994 and 1995), and analysed the Hubble Space Telescope High Speed Photometer Crab pulsar data (obtained in October 1991). Results show a 0:006Sigma 0:002 magnitude periodic modulation at the period of 60 seconds. Further observations are needed to confirm the periodicity which may be explained by the free precession of a neutron star.

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