Searching the Gamma-ray Sky for Counterparts to Gravitational Wave Sources: Fermi GBM and LAT Observations of LVT151012 and GW151226

J Racusin 1, 2 E Burns 3 A. Goldstein 4 V. Connaughton 4 C.A. Wilson-Hodge 5 P. Jenke 3 L. Blackburn 6 M Briggs 7 J Broida 8 J Camp 9 N. Christensen 10 C M Hui 5 L Littenberg 4 P Shawhan 11 L. Singer 2 J Veitch 12 P Bhat 3 W. Cleveland 3 G Fitzpatrick 13 M Gibby 14 A von Kienlin 15 S Mcbreen 16 B. Mailyan 3 C.A. Meegan 3 W.S. Paciesas 4 R.D. Preece 3 O.J. Roberts 17 M Stanbro 7 P Veres 7 B.-B Zhang 3 M. Ackermann 17 A. Albert 18 William B. Atwood 19 Magnus Axelsson 20 L. Baldini 21 Jean Ballet 22 G. Barbiellini 23 Matthew G. Baring 24 D. Bastieri 25 R. Bellazzini 26 E. Bissaldi 21 R.D. Blandford 27 E.D. Bloom 28 R. Bonino 29 J. Bregeon 30 Pascal Bruel 31 S. Buson 2 G.A. Caliandro 27 R. A. Cameron 27 R. Caputo 19 M. Caragiulo 32 P. A. Caraveo 33 E. Cavazzuti 34 E. Charles 27 J. Chiang 27 S. Ciprini 34 F. Costanza 21 A. Cuoco 35 S. Cutini 34 F. d'Ammando 36 F. de Palma 21 R. Desiante 29 S. W. Digel 27 N. Di Lalla 37 M. Di Mauro 28 L. Di Venere 32 P S. Drell 27 C. Favuzzi 32 E.C. Ferrara 38 W.B. Focke 27 Y. Fukazawa 39 S Funk 40 P. Fusco 41 F. Gargano 21 D. Gasparrini 34 N. Giglietto 26 G. Gill 42 M. Giroletti 43 T. Glanzmann 28 J. Granot 44 D. Green 2 J.E Grove 45 Lucas Guillemot 38 S. Guiriec 2 A.K. Harding 2 T. Jogler 46 G. Jóhannesson 47 T. Kamae 48 S. Kensei 39 D. Kocevski 2 M. Kuss 41 S. Larsson 20 L. Latronico 29 J. Li 49 F. Longo 26 F. Loparco 30 P. Lubrano 50 J. D. Magill 11 S. Maldera 29 D. Malyshev 51 J. E. Mcenery 2 P.F. Michelson 27 T. Mizuno 52 A. Morselli 53 I. V. Moskalenko 28 M. Negro 29 E. Nuss 54 N. Omodei 28 M. Orienti 55 E. Orlando 27 J. F. Ormes 56 D. Paneque 57 S. Perkins 2 M. Pesce-Rollins 32 Frédéric Piron 58 G. Pivato 21 T.A. Porter 27 G. Principe 51 S. Rainò 26 R. Rando 25 M. Razzano 59 S. Razzaque 60 A. Reimer 61 O. Reimer 61 P.M. Saz Parkinson 19 J.D. Scargle 62 C Sgrò 21 D Simone 63 E. J. Siskind 64 D Smith 65 F Spada 21 P Spinelli 41 D.J. Suson 66 H Tajima 67 J.B Thayer 28 D.F Torres 49 E Troja 2 Y Uchiyama 68 G Vianello 45 K.S. Wood 45 M. Wood 22
60 PPM Group [University of Johannesburg]
Department of Geology [University of Johannesburg]
Abstract : We present the Fermi Gamma-ray Burst Monitor (GBM) and Large Area Telescope (LAT) observations of the LIGO binary black hole merger event GW151226 and candidate LVT151012. At the time of the LIGO triggers on LVT151012 and GW151226, GBM was observing 68% and 83% of the localization regions, and LAT was observing 47% and 32%, respectively. No candidate electromagnetic counterparts were detected by either the GBM or LAT. We present a detailed analysis of the GBM and LAT data over a range of timescales from seconds to years, using automated pipelines and new techniques for characterizing the flux upper bounds across large areas of the sky. Due to the partial GBM and LAT coverage of the large LIGO localization regions at the trigger times for both events, differences in source distances and masses, as well as the uncertain degree to which emission from these sources could be beamed, these non-detections cannot be used to constrain the variety of theoretical models recently applied to explain the candidate GBM counterpart to GW150914.
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J Racusin, E Burns, A. Goldstein, V. Connaughton, C.A. Wilson-Hodge, et al.. Searching the Gamma-ray Sky for Counterparts to Gravitational Wave Sources: Fermi GBM and LAT Observations of LVT151012 and GW151226. The Astrophysical Journal, American Astronomical Society, 2017, 835 (1), 82 - 27 p. ⟨10.3847/1538-4357/835/1/82⟩. ⟨insu-01492674⟩

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