An r-process Kilonova Associated with the Short-hard GRB 130603B

@article{Berger2013AnRK,
  title={An r-process Kilonova Associated with the Short-hard GRB 130603B},
  author={E. Berger and W. Fong and R. Chornock},
  journal={The Astrophysical Journal},
  year={2013},
  volume={774}
}
We present ground-based optical and Hubble Space Telescopeoptical and near-IR observations of the shorthard GRB 130603B at z = 0.356, which demonstrate the presence of excess near-IR emission matching the expected brightness and color of an r-process powered trans ient (a “kilonova”). The early afterglow fades rapidly with � . -2.6 at t � 8 - 32 hr post-burst and has a spectral index of � � -1.5 (F� / t � � � ), leading to an expected near-IR brightness at the time of the first HST observation… Expand

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