Skip to main content
eScholarship
Open Access Publications from the University of California

Updated search for spectral lines from Galactic dark matter interactions with pass 8 data from the Fermi Large Area Telescope

  • Author(s): Ackermann, M
  • Ajello, M
  • Albert, A
  • Anderson, B
  • Atwood, WB
  • Baldini, L
  • Barbiellini, G
  • Bastieri, D
  • Bellazzini, R
  • Bissaldi, E
  • Blandford, RD
  • Bloom, ED
  • Bonino, R
  • Bottacini, E
  • Brandt, TJ
  • Bregeon, J
  • Bruel, P
  • Buehler, R
  • Buson, S
  • Caliandro, GA
  • Cameron, RA
  • Caputo, R
  • Caragiulo, M
  • Caraveo, PA
  • Cecchi, C
  • Charles, E
  • Chekhtman, A
  • Chiang, J
  • Chiaro, G
  • Ciprini, S
  • Claus, R
  • Cohen-Tanugi, J
  • Conrad, J
  • Cuoco, A
  • Cutini, S
  • D'Ammando, F
  • De Angelis, A
  • De Palma, F
  • Desiante, R
  • Digel, SW
  • Di Venere, L
  • Drell, PS
  • Drlica-Wagner, A
  • Favuzzi, C
  • Fegan, SJ
  • Franckowiak, A
  • Fukazawa, Y
  • Funk, S
  • Fusco, P
  • Gargano, F
  • Gasparrini, D
  • Giglietto, N
  • Giordano, F
  • Giroletti, M
  • Godfrey, G
  • Gomez-Vargas, GA
  • Grenier, IA
  • Grove, JE
  • Guiriec, S
  • Gustafsson, M
  • Hewitt, JW
  • Hill, AB
  • Horan, D
  • Jóhannesson, G
  • Johnson, RP
  • Kuss, M
  • Larsson, S
  • Latronico, L
  • Li, J
  • Li, L
  • Longo, F
  • Loparco, F
  • Lovellette, MN
  • Lubrano, P
  • Malyshev, D
  • Mayer, M
  • Mazziotta, MN
  • McEnery, JE
  • Michelson, PF
  • Mizuno, T
  • Moiseev, AA
  • Monzani, ME
  • Morselli, A
  • Murgia, S
  • Nuss, E
  • Ohsugi, T
  • Orienti, M
  • Orlando, E
  • Ormes, JF
  • Paneque, D
  • Pesce-Rollins, M
  • Piron, F
  • Pivato, G
  • Rainò, S
  • Rando, R
  • Razzano, M
  • Reimer, A
  • Reposeur, T
  • Ritz, S
  • Sánchez-Conde, M
  • et al.

Published Web Location

https://arxiv.org/abs/1506.00013
No data is associated with this publication.
Abstract

© 2015 American Physical Society. Dark matter in the Milky Way may annihilate directly into γ rays, producing a monoenergetic spectral line. Therefore, detecting such a signature would be strong evidence for dark matter annihilation or decay. We search for spectral lines in the Fermi Large Area Telescope observations of the Milky Way halo in the energy range 200 MeV-500 GeV using analysis methods from our most recent line searches. The main improvements relative to previous works are our use of 5.8 years of data reprocessed with the Pass 8 event-level analysis and the additional data resulting from the modified observing strategy designed to increase exposure of the Galactic center region. We search in five sky regions selected to optimize sensitivity to different theoretically motivated dark matter scenarios and find no significant detections. In addition to presenting the results from our search for lines, we also investigate the previously reported tentative detection of a line at 133 GeV using the new Pass 8 data.

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Item not freely available? Link broken?
Report a problem accessing this item