Swift-XRT Follow-up of Gravitational-wave Triggers in the Second Advanced LIGO/Virgo Observing Run

@article{Klingler2019SwiftXRTFO,
  title={Swift-XRT Follow-up of Gravitational-wave Triggers in the Second Advanced LIGO/Virgo Observing Run},
  author={N. J. Klingler and Jamie A. Kennea and P. A. Evans and Aaron Tohuvavohu and S. B. Cenko and Scott Douglas Barthelmy and Andrew P. Beardmore and Alice A. Breeveld and Peter. J. Brown and David N. Burrows and Simone Campana and G Cusumano and A. D’A{\`i} and Paolo D’Avanzo and Valerio D’Elia and Massimiliano de Pasquale and S. W. K. Emery and J. Garcia and Paolo Giommi and Caryl Gronwall and Dieter H. Hartmann and Hans A. Krimm and N. P. M. Kuin and A. Y. Lien and Daniele B. Malesani and F. E. Marshall and A. Melandri and J A Nousek and Samantha R. Oates and P. T. O’Brien and Julian P. Osborne and Kim L. Page and David M. Palmer and Matteo Perri and Judith L. Racusin and Michael H. Siegel and Takanori Sakamoto and B. Sbarufatti and Gianpiero Tagliaferri and Eleonora Troja},
  journal={The Astrophysical Journal Supplement Series},
  year={2019},
  volume={245}
}
The Neil Gehrels Swift Observatory carried out prompt searches for gravitational-wave (GW) events detected by the LIGO/Virgo Collaboration (LVC) during the second observing run (“O2”). Swift performed extensive tiling of eight LVC triggers, two of which had very low false-alarm rates (GW170814 and the epochal GW170817), indicating a high confidence of being astrophysical in origin; the latter was the first GW event to have an electromagnetic counterpart detected. In this paper we describe the… 

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