1452 4799

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Discrete steps in dispersion measures of Fast Radio Bursts
by Michael Hippke, Wilfried F. Domainko, John G. Learned
http://arxiv.org/pdf/1503.05245v2, 30 Mar 2015
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Fast Radios Bursts (FRBs) show large dispersion measures (DMs), suggesting an extragalactic location. We analyze the DMs of the 11 known FRBs in detail and identify steps as integer multiples of half the lowest DM found, 187.5cm-3pc, so that DMs occur in groups centered at 375, 562, 750, 937, 1125cm-3pc, with errors observed