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arXiv · 0808.1899

A Bursting Radio Transient in the Direction of the Galactic Center

Paul S. Ray·Scott D. Hyman·T. Joseph Lazio·Namir E. Kassim·Subhashis Roy·David L. Kaplan·Deepto Chakrabarty
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Abstract

The radio sky is poorly sampled for rapidly varying transients because of the narrow field-of-view of most imaging radio telescopes at cm and shorter wavelengths. The emergence of sensitive long wavelength observations with intrinsically larger fields-of-view are changing this situation, as partly illustrated by our ongoing meter-wavelength monitoring observations and archival studies of the Galactic Center. In this search, we discovered a transient, bursting, radio source in the direction of the Galactic Center, GCRT J1745-3009, with extremely unusual properties. Its flux and rapid variability imply a brightness temperature >10^12 K if it is at a distance >70 pc, implying that it is a coherent emitter. I will discuss the discovery of the source and the subsequent re-detections, as well as searches for counterparts at other wavelengths, and several proposed models.

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Paul S. Ray, Scott D. Hyman, T. Joseph Lazio, Namir E. Kassim, Subhashis Roy, David L. Kaplan, Deepto Chakrabarty. 2008-08-13. A Bursting Radio Transient in the Direction of the Galactic Center. https://arxiv.org/abs/0808.1899

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