Research Article

Swift and NuSTAR observations of GW170817: Detection of a blue kilonova

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Science  16 Oct 2017:
DOI: 10.1126/science.aap9580

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  • Received for publication September 14, 2017
  • Accepted for publication October 4, 2017

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Author Information

  1. P. A. Evans1,*,
  2. S. B. Cenko2,3,
  3. J. A. Kennea4,
  4. S. W. K. Emery5,
  5. N. P. M. Kuin5,
  6. O. Korobkin6,
  7. R. T. Wollaeger6,
  8. C. L. Fryer6,
  9. K. K. Madsen7,
  10. F. A. Harrison7,
  11. Y. Xu7,
  12. E. Nakar8,
  13. K. Hotokezaka9,
  14. A. Lien10,11,
  15. S. Campana12,
  16. S. R. Oates13,
  17. E. Troja2,14,
  18. A. A. Breeveld5,
  19. F. E. Marshall2,
  20. S. D. Barthelmy2,
  21. A. P. Beardmore1,
  22. D. N. Burrows4,
  23. G. Cusumano15,
  24. A. D’Aì15,
  25. P. D’Avanzo12,
  26. V. D’Elia16,17,
  27. M. de Pasquale18,
  28. W. P. Even6,19,
  29. C. J. Fontes6,
  30. K. Forster7,
  31. J. Garcia7,
  32. P. Giommi17,
  33. B. Grefenstette7,
  34. C. Gronwall4,20,
  35. D. H. Hartmann21,
  36. M. Heida7,
  37. A. L. Hungerford6,
  38. M. M. Kasliwal22,
  39. H. A. Krimm23,24,
  40. A. J. Levan13,
  41. D. Malesani25,
  42. A. Melandri12,
  43. H. Miyasaka7,
  44. J. A. Nousek4,
  45. P. T. O’Brien1,
  46. J. P. Osborne1,
  47. C. Pagani1,
  48. K. L. Page1,
  49. D. M. Palmer26,
  50. M. Perri16,17,
  51. S. Pike7,
  52. J. L. Racusin2,
  53. S. Rosswog27,
  54. M. H. Siegel4,
  55. T. Sakamoto28,
  56. B. Sbarufatti4,
  57. G. Tagliaferri12,
  58. N. R. Tanvir1,
  59. A. Tohuvavohu4
  1. 1University of Leicester, X-ray and Observational Astronomy Research Group, Leicester Institute for Space and Earth Observation, Department of Physics and Astronomy, University Road, Leicester, LE1 7RH, UK.
  2. 2Astrophysics Science Division, NASA Goddard Space Flight Center, Greenbelt MD, 20771 USA.
  3. 3Joint Space-Science Institute, University of Maryland, College Park, MD 20742, USA.
  4. 4Department of Astronomy and Astrophysics, The Pennsylvania State University, University Park, PA 16802, USA.
  5. 5University College London, Mullard Space Science Laboratory, Holmbury St. Mary, Dorking, RH5 6NT, UK.
  6. 6Center for Theoretical Astrophysics, Los Alamos National Laboratory, Los Alamos, NM 87545 USA.
  7. 7Cahill Center for Astronomy and Astrophysics, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA.
  8. 8The Raymond and Beverly Sackler School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978, Israel.
  9. 9Center for Computational Astrophysics, Simons Foundation, 162 5th Ave, New York, 10010, NY, USA.
  10. 10Center for Research and Exploration in Space Science and Technology (CRESST) and NASA Goddard Space Flight Center, Greenbelt MD, 20771 USA.
  11. 11Department of Physics, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, MD 21250, USA.
  12. 12INAF – Osservatorio Astronomico di Brera, Via Bianchi 46, I-23807 Merate, Italy.
  13. 13Department of Physics, University of Warwick, Coventry, CV4 7AL, UK.
  14. 14Department of Physics and Astronomy, University of Maryland, College Park, MD 20742-4111, USA.
  15. 15INAF–IASF Palermo, via Ugo La Malfa 153, I-90146, Palermo, Italy.
  16. 16INAF–Osservatorio Astronomico di Roma, via Frascati 33, I-00040 Monteporzio Catone, Italy.
  17. 17Space Science Data Center (SSDC) - Agenzia Spaziale Italiana (ASI), I-00133 Roma, Italy.
  18. 18Department of Astronomy and Space Sciences, University of Istanbul, Beyzt 34119, Istanbul, Turkey.
  19. 19Southern Utah University, Cedar City, UT 84720, USA.
  20. 20Institute for Gravitation and the Cosmos, The Pennsylvania State University, University Park, PA 16802, USA.
  21. 21Department of Physics and Astronomy, Clemson University, Kinard Lab of Physics, USA.
  22. 22Division of Physics, Mathematics and Astronomy, California Institute of Technology, Pasadena, CA 91125, USA.
  23. 23Universities Space Research Association, 7178 Columbia Gateway Dr, Columbia, MD 21046, USA.
  24. 24National Science Foundation, 2415 Eisenhower Avenue, Alexandria, VA 22314, USA.
  25. 25Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen Ø, Denmark.
  26. 26Los Alamos National Laboratory, B244, Los Alamos, NM, 87545, USA.
  27. 27The Oskar Klein Centre, Department of Astronomy, AlbaNova, Stockholm University, SE-106 91 Stockholm, Sweden.
  28. 28Department of Physics and Mathematics, Aoyama Gakuin University, Sagamihara, Kanagawa, 252-5258, Japan.
  1. *Corresponding author. Email: pae9{at}


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