Low-Frequency Radio Transients in the Galactic Center

Details Low-Frequency Radio Transients in the Galactic Center Low-Frequency Radio Transients in the Galactic Center

2001-10-05

arxiv.org/abs/astro-ph/0110151v1

Astronomy and Astrophysics

Astrophysics

Scientific paper

10.1086/338905

We report the detection of a new radio transient source, GCRT J1746-2757, located only 1.1 degrees north of the Galactic center. Consistent with other radio transients toward the Galactic center, this source brightened and faded on a time scale of a few months. No X-ray counterpart was detected. We also report new 0.33 GHz measurements of the radio counterpart to the X-ray transient source, XTE J1748-288, previously detected and monitored at higher radio frequencies. We show that the spectrum of XTE J1748-288 steepened considerably during a period of a few months after its peak. We also discuss the need for a more efficient means of finding additional radio transients.

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