A Search for Single Radio Pulses and Bursts from Southern AXPs

Details A Search for Single Radio Pulses and Bursts from Southern AXPs A Search for Single Radio Pulses and Bursts from Southern AXPs

2007-10-13

arxiv.org/abs/0710.2628v1

AIPConf.Proc.983:259-261,2008

Astronomy and Astrophysics

Astrophysics

3 pages, including 1 table. To appear in the proceedings of "40 Years of Pulsars: Millisecond Pulsars, Magnetars, and More", A

Scientific paper

10.1063/1.2900156

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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