Transient radio emisison from SAX J1808.4-3658
Abstract
We report on the detection of radio emission from the accretion-powered X-ray millisecond pulsar SAX J1808.4-3658, using the Australia Telescope Compact Array. We detected a ~0.8 mJy source at the position of SAX J1808.4-3658 on 1998 April 27, approximately one day after the onset of a rapid decline in the X-ray flux; no such source was seen on the previous day. We consider this emission to be related to the radio emission from other X-ray binaries, and is most likely associated with an ejection of material from the system. No radio emission was detected at later epochs, indicating that if SAX J1808.4-3658 is a radio pulsar during X-ray quiescence then its monochromatic luminosity must be less than L(1.4 GHz) ~6 mJy/kpc^2.
Cite
@article{arxiv.astro-ph/9907111,
title = {Transient radio emisison from SAX J1808.4-3658},
author = {B. M. Gaensler and B. W. Stappers and T. J. Getts},
journal= {arXiv preprint arXiv:astro-ph/9907111},
year = {2009}
}
Comments
6 pages, uses emulateapj.sty, one embedded PS figure. Accepted to ApJ Letters