SIMBAD references

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 timescale of a few months. No X-ray counterpart was detected. This suggests that either there was only very faint X-ray emission, compared with highly Doppler boosted radio emission, or that GCRT J1746-2757 is a member of a class of radio transients with no associated X-ray emission. 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.