Abstract
The distances of fast radio burst (FRB) sources are currently unknown.We showthat the 21-cmabsorption line of hydrogen can be used to infer the redshifts of FRB sources, and determinewhether they are Galactic or extragalactic. We calculate a probability of 10 per cent for thehost galaxy of an FRB to exhibit a 21-cm absorption feature of equivalent width ≲10 km s-1.Arecibo, along with several future radio observatories, should be capable of detecting suchassociated 21-cm absorption signals for strong bursts of ≲several Jy peak flux densities.
| Original language | English (US) |
|---|---|
| Pages (from-to) | L25-L29 |
| Journal | Monthly Notices of the Royal Astronomical Society: Letters |
| Volume | 460 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jul 21 2016 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2016 The Authors.
Keywords
- Galaxies: distances and redshifts
- Quasars: absorption lines
- Radio lines: general
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