Periodic Nulls in Pulsar B1133+16

Details Periodic Nulls in Pulsar B1133+16 Periodic Nulls in Pulsar B1133+16

Feb 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc..983...82h&link_type=abstract

40 YEARS OF PULSARS: Millisecond Pulsars, Magnetars and More. AIP Conference Proceedings, Volume 983, pp. 82-84 (2008).

Physics

Pulsars, Neutron Stars, Radiation Mechanisms, Polarization

Scientific paper

Numerous studies of the brightest Cambridge pulsar, B1133+16, have revealed little order in its individual pulses, apart from a weak 30-odd-rotation-period fluctuation feature and that some 15% of the star's pulsars are ``nulls.'' New Arecibo observations confirm this fluctuation feature and that it modulates all the emission, not simply the ``saddle'' region. By replacing each pulse with a scaled version of the average profile we were able to quench all subpulse modulation and thereby demonstrate that the star's ``null'' pulses exhibit a similar periodicity. An unabridged analysis of periodic nulling (using the techniques in this paper) in pulsar B1133+16 is in Herfindal & Rankin (2007).

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