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Swope Supernova Survey 2017a (SSS17a), the optical counterpart to a gravitational wave source

D. A. CoulterDepartment of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USAR. J. FoleyDepartment of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USAC. D. KilpatrickDepartment of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USAM. R. DroutObservatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USAA. L. PiroObservatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USAB. J. ShappeeInstitute for Astronomy, University of Hawai’i, 2680 Woodlawn Drive, Honolulu, HI 96822, USAM. R. SiebertDepartment of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USAJ. D. SimonObservatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USANatalie UlloaDepartamento de Física y Astronomía, Universidad de La Serena, La Serena, ChileD. KasenDepartments of Physics and Astronomy, University of California, Berkeley, CA 94720, USABarry F. MadoreDepartment of Astronomy and Astrophysics, The University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USAA. Murguia-BerthierDepartment of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USAY. C. PanDepartment of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USAJ. X. ProchaskaDepartment of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USAE. Ramírez-RuizDark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, 2100 Copenhagen, DenmarkA. RestDepartment of Physics and Astronomy, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USAC. Rojas-BravoDepartment of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA

2017en

ABI

Annotatsiya

Photons from a gravitational wave event Two neutron stars merging together generate a gravitational wave signal and have also been predicted to emit electromagnetic radiation. When the gravitational wave event GW170817 was detected, astronomers rushed to search for the source using conventional telescopes (see the Introduction by Smith). Coulter et al. describe how the One-Meter Two-Hemispheres (1M2H) collaboration was the first to locate the electromagnetic source. Drout et al. present the 1M2H measurements of its optical and infrared brightness, and Shappee et al. report their spectroscopy of the event, which is unlike previously detected astronomical transient sources. Kilpatrick et al. show how these observations can be explained by an explosion known as a kilonova, which produces large quantities of heavy elements in nuclear reactions. Science , this issue p. 1556 , p. 1570 , p. 1574 , p. 1583 ; see also p. 1554

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DOI: 10.1126/science.aap9811

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