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Title:
A Search for Single Radio Pulses and Bursts from Southern AXPs
Authors:
Crawford, F.; Hessels, J. W. T.; Kaspi, V. M.
Publication:
40 YEARS OF PULSARS: Millisecond Pulsars, Magnetars and More. AIP Conference Proceedings, Volume 983, pp. 259-261 (2008). (AIPC Homepage)
Publication Date:
02/2008
Origin:
AIP
Keywords:
pulsars, neutron stars, radiotelescopes, X-ray sources (astronomical)
Abstract Copyright:
(c) 2008: American Institute of Physics
DOI:
10.1063/1.2900156
Bibliographic Code:
2008AIPC..983..259C

Abstract

We observed four southern AXPs in 1999 near 1400 MHz with the Parkes 64-m radio telescope to search for periodic radio emission. No Fourier candidates were discovered in the initial analysis, but the recent radio activity observed for the AXP XTE J1810-197 has prompted us to revisit these data to search for single radio pulses and bursts. The data were searched for both persistent and bursting radio emission at a wide range of dispersion measures, but no detections of either kind were made. These results further weaken the proposed link between rotating radio transient sources and magnetars. However, continued radio searches of these and other AXPs at different epochs are warranted given the transient nature of the radio emission seen from XTE J1810-197, which until very recently was the only known radio-emitting AXP.
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