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4th of June 2018
A Turnover in the Radio Light Curve of GW170817
by Dobie et al.
The Gravitational Wave event GW170817 was the result of a neutron star--neutron star merger. Dobie et al. have presented a series of 2–9 GHz radio observations of GW170817 covering the period 125–200 days post-merger, taken with the Australia Telescope Compact Array and the Karl G. Jansky Very Large Array. The observations demonstrate that the radio afterglow peaked at 149 +/- 2 days post-merger and is now declining in flux density. No evidence was seen for evolution in the radio-only spectral index, which remains consistent with optically-thin synchrotron emission connecting the radio, optical, and X-ray regimes. Full details are given in the paper published in the Astrophysical Journal.

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