Journal Article

Core emission in classical conal double pulsars

Stephanie A. E. Young and Joanna M. Rankin

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 424, issue 4, pages 2477-2485
Published in print August 2012 | ISSN: 0035-8711
Published online August 2012 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2012.21077.x
Core emission in classical conal double pulsars

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Abstract

A focus on single-pulse methods has identified what appears to be core emission in pulsars B0525+21, B0301+19 and B1133+16. Such core emission has been suspected in several ‘;classical’ double conal pulsars; however, previous methods of analysis have restricted our ability to look further into this possibility. While average profiles of pulsars inform about the typical behaviours of these stars, single-pulse observations shed light on the atypical behaviours and weak features of a pulsar's emission. Emission in the ‘;intrapulse region’ is not detectable in the average profiles but becomes clear in low-intensity and single-pulse observations. Through a process of suppressing the outer conal emission and averaging non-consecutive pulses that exhibit peaks in a central search region, reliable partial profiles of these putative core features have been obtained. In each case, the widths of the central features squared well with the expected polar cap geometry, further strengthening their identification with core emission components.

Keywords: pulsars: general; pulsars: individual: B0301+19; pulsars: individual: B0525+21; pulsars: individual: B1133+16

Journal Article.  4243 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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