Journal Article

Radio properties of rotating radio transients – I. Searches for periodicities and randomness in pulse arrival times

N. T. Palliyaguru, M. A. McLaughlin, E. F. Keane, M. Kramer, A. G. Lyne, D. R. Lorimer, R. N. Manchester, F. Camilo and I. H. Stairs

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 417, issue 3, pages 1871-1880
Published in print November 2011 | ISSN: 0035-8711
Published online October 2011 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2011.19388.x
Radio properties of rotating radio transients – I. Searches for periodicities and randomness in pulse arrival times

More Like This

Show all results sharing this subject:

  • Astronomy and Astrophysics

GO

Show Summary Details

Preview

We have analysed the long- and short-term time dependence of the pulse arrival times and the pulse detection rates for eight rotating radio transient (RRAT) sources from the Parkes Multibeam Pulsar Survey. We find significant periodicities in the individual pulse arrival times from six RRATs. These periodicities range from ∼30 min to 2100 d, and from one to 16 independent (i.e. non-harmonically related) periodicities are detected for each RRAT. In addition, we find that pulse emission is a random (i.e. Poisson) process on short (hour-long) time-scales but that most of the objects exhibit longer term (months to years) non-random behaviour. We find that PSR J1819−1458 and PSR J1317−5759 emit more doublets (two consecutive pulses) and triplets (three consecutive pulses) than is expected in random pulse distributions. No evidence for such an excess is found for the other RRATs. There are several different models for RRAT emission depending on both extrinsic and intrinsic factors which are consistent with these properties.

Keywords: stars: neutron; pulsars: general; Galaxy: stellar content

Journal Article.  6005 words.  Illustrated.

Subjects: Astronomy and Astrophysics

Full text: subscription required

How to subscribe Recommend to my Librarian

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.