http://arxiv.org/abs/1511.03615
The distances of Fast Radio Burst (FRB) sources are currently unknown. We show that the 21-cm absorption line of hydrogen can be used to infer the redshifts of FRB sources, and determine whether they are Galactic or extragalactic. We calculate a probability of $\sim 10\%$ for detecting a 21-cm equivalent width $\gtrsim 4 ~\mathrm{km}~\mathrm{s}^{-1}$. The forthcoming SKA observatory provides ideal prospects for detecting our predicted signal.
B. Margalit and A. Loeb
Thu, 12 Nov 15
12/61
Comments: 6 pages, 2 figures
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