Decelerating Blast Waves

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Summary Table
Category Progenitor Type Energy Mechanism Emission Mechanism Counterparts References Brief Comments
LF Radio HF Radio Microwave Terahertz Optical/IR X-rays Gamma-rays Gravitational Waves Neutrinos
Shock Interaction Magnetar Repeat Thin shell Synch. Maser Yes
(excl. self absorption)
Yes - - Prompt Prompt Prompt No No None

Definitions: LF Radio (3 MHz to 3 GHz); HF Radio (3 GHz to 30 GHz); Microwave (30 to 300 GHz)

Model Description

In this model, FRBs are generated from forward shocks of blast waves decelerating into the previously decelerated waves. An example of these blast waves are flare ejecta from young magnetars. The ejected material also produces a persistent radio source and a source of high local dispersion measure and high rotation measure. The flares are expected to produce prompt gamma-ray, X-ray and possibly optical flares.

Observational Constraints

Observation of a persistent radio source, location in a dwarf galaxy, measurement of high rotation measure for the CHIME/FRB repeater would be a good way to test the model.