Continued Radio Observations of GW170817 3.5 yr Post-merger

  title={Continued Radio Observations of GW170817 3.5 yr Post-merger},
  author={Arvind Balasubramanian and Alessandra Corsi and Kunal P. Mooley and Murray Brightman and Gregg Hallinan and Kenta Hotokezaka and David L. Kaplan and Davide Lazzati and Eric J. Murphy},
  journal={The Astrophysical Journal Letters},
We present new radio observations of the binary neutron star merger GW170817 carried out with the Karl G. Jansky Very large Array (VLA) more than 3 yr after the merger. Our combined data set is derived by coadding more than ≈32 hr of VLA time on-source, and as such provides the deepest combined observation (rms sensitivity ≈0.99 μJy) of the GW170817 field obtained to date at 3 GHz. We find no evidence for a late-time radio rebrightening at a mean epoch of t ≈ 1200 days since merger, in contrast… Expand
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