A Deep Chandra X-Ray Study of Neutron Star Coalescence GW170817
Daryl HaggardCIFAR Azrieli Global Scholar, Gravity & the Extreme Universe Program, Canadian Institute for Advanced Research, 661 University Avenue, Suite 505, Toronto, ON M5G 1M1, CanadaMelania NynkaMcGill Space Institute and Department of Physics, McGill University, 3600 rue University, Montreal, QC, H3A 2T8, CanadaJohn J. RuanMcGill Space Institute and Department of Physics, McGill University, 3600 rue University, Montreal, QC, H3A 2T8, CanadaVicky KalogeraCenter for Interdisciplinary Exploration and Research in Astrophysics and Department of Physics and Astronomy, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3112, USAS. B. CenkoDeleted InstitutionN. GehrelsLeicester Institute for Space and Earth Observation and Department of Physics & Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UKJ. A. KenneaDepartment of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802, USA
2017en
ABI
Abstract
We report Chandra observations of GW170817, the first neutron star–neutron star merger discovered by the joint LIGO-Virgo Collaboration, and the first direct detection of gravitational radiation associated with an electromagnetic counterpart, Fermi short γ-ray burst GRB 170817A. The event occurred on 2017 August 17 and subsequent observations identified an optical counterpart, SSS17a, coincident with NGC 4993 (~10'' separation).
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