Are the pulses of the Crab pulsar modulated?

Details Are the pulses of the Crab pulsar modulated? Are the pulses of the Crab pulsar modulated?

Feb 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...306..443c&link_type=abstract

Astronomy and Astrophysics, v.306, p.443

Astronomy and Astrophysics

Astrophysics

14

Pulsars: Individual (Crab Pulsar), Stars: Neutron, Stars: Rotation

Scientific paper

We present the results of optical Crab pulsar observations which were designed to search for short-time variations in pulsar's light-curve. Hubble Space Telescope (High Speed Photometer) data and photometric data obtained at the Asiago 1.82m telescope using a specially designed stroboscopic chopper have been analysed and compared. We find a very weak common modulation with the period of 60 seconds which is consistent with all data sets. Such periodic variations in Crab pulsar's light-curve might reflect the pertained free precession of the young Crab pulsar.

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