Fermi Observations of the LIGO Event GW170104

Goldstein, A.; Veres, P.; Burns, E.; Blackburn, L.; Briggs, M. S.; Christensen, N.; Cleveland, W. H.; Connaughton, V.; Canton, T. Dal; Hamburg, R.; Hui, C. M.; Jenke, P. A.; Kocevski, D.; Preece, R. D.; Siellez, K.; Veitch, J.; Wilson hodge, C. A.; Bhat, N.; Bissaldi, Elisabetta; Gibby, M. H.; Giles, M. M.; Von Kienlin, A.; Mailyan, B.; Meegan, C. A.; Paciesas, W. S.; Roberts, O. J.; Stanbro, M.; Ackermann, M.; Ajello, M.; Atwood, W. B.; Baldini, L.; Barbiellini, G.; Bastieri, D.; Bellazzini, R.; Blandford, R. D.; Bloom, E. D.; Bonino, R.; Bottacini, E.; Brandt, T. J.; Bregeon, J.; Bruel, P.; Buehler, R.; Burnett, T. H.; Buson, S.; Cameron, R. A.; Caraveo, P. A.; Cavazzuti, E.; Cecchi, C.; Charles, E.; Chekhtman, A.; Chiang, J.; Chiaro, G.; Ciprini, S.; Cominsky, L. R.; Costantin, D.; Cutini, S.; D'Ammando, F.; Palma, F. De; Desiante, R.; Digel, S. W.; Lalla, N. Di; Mauro, M. Di; Venere, L. Di; Favuzzi, Cecilia; Ferrara, E. C.; Franckowiak, A.; Fukazawa, Y.; Funk, S.; Fusco, P.; Gargano, Fabio; Gasparrini, D.; Giglietto, Nicola; Giomi, M.; Giordano, Francesco; Giroletti, M.; Glanzman, T.; Green, D.; Grenier, I. A.; Grove, J. E.; Guillemot, L.; Guiriec, S.; Harding, A. K.; Hays, E.; Horan, D.; Jã³hannesson, G.; Kamae, T.; Kensei, S.; Kuss, M.; Mura, G. La; Larsson, S.; Latronico, L.; Li, J.; Longo, F.; Loparco, Francesco; Lovellette, M. N.; Lubrano, P.; Magill, J. D.; Maldera, S.; Manfreda, A.; Mazziotta, M. N.; Mcenery, J. E.; Meyer, M.; Michelson, P. F.; Mizuno, T.; Moiseev, A. A.; Monzani, M. E.; Moretti, E.; Morselli, A.; Moskalenko, I. V.; Negro, M.; Nuss, E.; Ohsugi, T.; Omodei, N.; Orienti, M.; Orlando, E.; Ormes, J. F.; Palatiello, M.; Paliya, V. S.; Paneque, D.; Perkins, J. S.; Persic, M.; Pesce rollins, M.; Petrosian, V.; Piron, F.; Porter, T. A.; Principe, G.; Racusin, J. L.; Raino', Silvia; Rando, R.; Razzano, M.; Razzaque, S.; Reimer, A.; Reimer, O.; Reposeur, T.; Parkinson, P. M. Saz; Sgro, C.; Siskind, E. J.; Spada, F.; Spandre, G.; Spinelli, P.; Suson, D. J.; Thayer, J. G.; Thayer, J. B.; Torres, D. F.; Troja, E.; Vianello, G.; Wood, K.; Wood, M.

doi:10.3847/2041-8213/aa8319

We present the Fermi Gamma-ray Burst Monitor (GBM) and Large Area Telescope (LAT) observations of the LIGO binary black hole merger (BBH) event GW170104. No candidate electromagnetic counterpart was detected by either GBM or LAT. A detailed analysis of the GBM and LAT data over timescales from seconds to days covering the Laser Interferometer Gravitational-wave Observatory (LIGO) localization region is presented. The resulting flux upper bound from the GBM is (5.2-9.4) Ã10-7erg cm-2s-1in the 10-1000 keV range and from the LAT is (0.2-90) Ã10-9erg cm-2s-1in the 0.1-1 GeV range. We also describe the improvements to our automated pipelines and analysis techniques for searching for and characterizing the potential electromagnetic counterparts for future gravitational-wave events from Advanced LIGO/Virgo.