NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-04-19 T19:43:19 PDT
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For refcode 2016ApJ...828L..16D:
Retrieve 14 NED objects in this reference.
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2016ApJ...828L..16D GW150914: First Search for the Electromagnetic Counterpart of a Gravitational-wave Event by the TOROS Collaboration Diaz, Mario C.; Beroiz, Martin; Penuela, Tania; Macri, Lucas M.; Oelkers, Ryan J.; Yuan, Wenlong; Garcia Lambas, Diego; Cabral, Juan; Colazo, Carlos; Dominguez, Mariano; Sanchez, Bruno; Gurovich, Sebastian; Lares, Marcelo; Schneiter, Matias; Grana, Dario; Renzi, Victor; Rodriguez, Horacio; Starck, Manuel; Vrech, Ruben; Artola, Rodolfo; Chiavassa Ferreyra, Antonio; Girardini, Carla; Quinones, Cecilia; Tapia, Luis; Tornatore, Marina; Marshall, Jennifer L.; DePoy, Darren L.; Branchesi, Marica; Brocato, Enzo; Padilla, Nelson; Pereyra, Nicolas A.; Mukherjee, Soma; Benacquista, Matthew; Key, Joey Abstract. We present the results of the optical follow-up conducted by the TOROS collaboration of the first gravitational-wave event GW150914. We conducted unfiltered CCD observations (0.35--1 micron) with the 1.5 m telescope at Bosque Alegre starting ~2.5 days after the alarm. Given our limited field of view (~100 arcmin^2^), we targeted 14 nearby galaxies that were observable from the site and were located within the area of higher localization probability. We analyzed the observations using two independent implementations of difference-imaging algorithms, followed by a Random-Forest-based algorithm to discriminate between real and bogus transients. We did not find any bona fide transient event in the surveyed area down to a 5sigma limiting magnitude of r = 21.7 mag (AB). Our result is consistent with the LIGO detection of a binary black hole merger, for which no electromagnetic counterparts are expected, and with the expected rates of other astrophysical transients. Key words: gravitational waves, techniques: image processing
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