Document Type

Article

Publication Date

2011

Abstract

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.

Source Citation

Palliyaguru, N. T., Mclaughlin, M. A., Keane, E. F., Kramer, M., Lyne, A. G., Lorimer, D. R.,… Stairs, I. H. (2011). Radio Properties Of Rotating Radio Transients - I. Searches For Periodicities And Randomness In Pulse Arrival Times. Monthly Notices Of The Royal Astronomical Society, 417(3), 1871-1880. http://doi.org/10.1111/J.1365-2966.2011.19388.X

Share

COinS
 
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.