Periodic nulls in the pulsar B1133+16

Jeffrey L. Herfindal, Joanna M. Rankin

Research output: Contribution to journalArticlepeer-review

72 Scopus citations

Abstract

ABSTRACT 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 per cent 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. A subbeam carousel model with a sparse and irregular 'beamlet' population appears to be compatible with these characteristics.

Original languageEnglish
Pages (from-to)430-436
Number of pages7
JournalMonthly Notices of the Royal Astronomical Society
Volume380
Issue number2
DOIs
StatePublished - Sep 2007
Externally publishedYes

Keywords

  • Methods: data analysis
  • Miscellaneous
  • Pulsars: general
  • Pulsars: individual: B1133+16

Fingerprint

Dive into the research topics of 'Periodic nulls in the pulsar B1133+16'. Together they form a unique fingerprint.

Cite this