The drifting subpulse phenomenon observed in three pulsars with triple profiles

Details The drifting subpulse phenomenon observed in three pulsars with triple profiles The drifting subpulse phenomenon observed in three pulsars with triple profiles

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...318..410h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 318, July 1, 1987, p. 410-420.

Astronomy and Astrophysics

Astronomy

24

Pulsars, Radio Astronomy, Astrometry, Stellar Cores, Stellar Radiation

Scientific paper

Three pulsars (PSRs 1632+24, 1845-01, and 1918+19) with triple average profile shapes have been found which have subpulses that drift across the full profile window. These are the first known triple-profile objects to show clear drifting. The emission details can be understood in the context of Rankin's core-conal model if two concentric conal emission regions are postulated with the inner cone producing stronger emission than the outer cone. Unlike all previously known pulsars with triple profiles, these objects show no evidence of core emission. PSR 1918+19 is shown to have at least four drifting modes which, as for PSR 2319+60, succeed each other in definite sequences punctuated by nulls.

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