Search for Early Gamma-ray Production in Supernovae Located in a Dense Circumstellar Medium with the Fermi LAT
- Ackermann, M.
- Arcavi, I.
- Baldini, L.
- Ballet, J.
- Barbiellini, G.
- Bastieri, D.
- Bellazzini, R.
- Bissaldi, E.
- Blandford, R. D.
- Bonino, R.
- Bottacini, E.
- Spinelli, P.
- Suson, D. J.
- Takahashi, H.
- Thayer, J. B.
- Tibaldo, L.
- Torres, D. F.
- Troja, E.
- Vianello, G.
- Werner, M.
- Wood, K. S.
- Brandt, T. J.
- Wood, M.
- Bregeon, J.
- Bruel, P.
- Buehler, R.
- Buson, S.
- Caliandro, G. A.
- Cameron, R. A.
- Caragiulo, M.
- CARAVEO, PATRIZIA
- Cavazzuti, E.
- Cecchi, C.
- Charles, E.
- Chekhtman, A.
- Chiang, J.
- Chiaro, G.
- Ciprini, S.
- Claus, R.
- Cohen-Tanugi, J.
- Cutini, S.
- D'Ammando, F.
- de Angelis, A.
- de Palma, F.
- Desiante, R.
- Di Venere, L.
- Drell, P. S.
- Favuzzi, C.
- Fegan, S. J.
- Franckowiak, A.
- Funk, S.
- Fusco, P.
- Gal-Yam, A.
- Gargano, F.
- Gasparrini, D.
- Giglietto, N.
- Giordano, F.
- GIROLETTI, MARCELLO
- Glanzman, T.
- Godfrey, G.
- Grenier, I. A.
- Grove, J. E.
- Guiriec, S.
- Harding, A. K.
- Hayashi, K.
- Hewitt, J. W.
- Hill, A. B.
- Horan, D.
- Jogler, T.
- Jóhannesson, G.
- Kocevski, D.
- Kuss, M.
- Larsson, S.
- Lashner, J.
- Latronico, L.
- Li, J.
- Li, L.
- Longo, F.
- Loparco, F.
- Lovellette, M. N.
- Lubrano, P.
- Malyshev, D.
- Mayer, M.
- Mazziotta, M. N.
- McEnery, J. E.
- Michelson, P. F.
- Mizuno, T.
- Monzani, M. E.
- Morselli, A.
- Murase, K.
- Nugent, P.
- Nuss, E.
- Ofek, E.
- Ohsugi, T.
- Orienti, M.
- Orlando, E.
- Ormes, J. F.
- Paneque, D.
- Pesce-Rollins, M.
- Piron, F.
- Pivato, G.
- Rainò, S.
- Rando, R.
- Razzano, M.
- Reimer, A.
- Reimer, O.
- Schulz, A.
- Sgrò, C.
- Siskind, E. J.
- Spada, F.
- Spandre, G.
DOIAbstract
Supernovae (SNe) exploding in a dense circumstellar medium (CSM) are hypothesized to accelerate cosmic rays in collisionless shocks and emit GeV γ-rays and TeV neutrinos on a timescale of several months. We perform the first systematic search for γ-ray emission in Fermi Large Area Telescope data in the energy range from 100 {MeV} to 300 {GeV} from the ensemble of 147 SNe Type IIn exploding in a dense CSM. We search for a γ-ray excess at each SNe location in a one-year time window. In order to enhance a possible weak signal, we simultaneously study the closest and optically brightest sources of our sample in a joint-likelihood analysis in three different time windows (1 year, 6 months, and 3 months). For the most promising source of the samp...
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