Low - Frequency Radio Transients in the Galactic Center
نویسندگان
چکیده
We report the detection of a new radio transient source, GCRT J1746−2757, located only 1. 1 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. Subject headings: Galaxy: center — radio continuum — stars: variable: other
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