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arXiv · 1001.5394

Circularly polarized emission from the transient bursting radio source GCRT J1745-3009

Subhashis Roy·Scott D. Hyman·Sabyasachi Pal·T. Joseph W. Lazio·Paul S. Ray·Namir E. Kassim
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Abstract

We report detection of strong circularly polarized emission from the transient bursting source GCRT J1745-3009 based on new analysis of 325 MHz GMRT observations conducted on 28 September 2003. We place 8 Solar radius as the upper limit on the size of the emission region. The implied high brightness temperature required for an object beyond 1 pc and the high fraction of circular polarization firmly establish the emission as coherent. Electron cyclotron or plasma emission from a highly subsolar magnetically dominated dwarf located less than 4 kpc away could have given rise to the GCRT radio emission.

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Subhashis Roy, Scott D. Hyman, Sabyasachi Pal, T. Joseph W. Lazio, Paul S. Ray, Namir E. Kassim. 2010-01-29. Circularly polarized emission from the transient bursting radio source GCRT J1745-3009. https://doi.org/10.1088/2041-8205%2F712%2F1%2Fl5

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