Updated Search for Spectral Lines from Galactic Dark Matter Interactions with Pass 8 Data from the Fermi Large Area Telescope

Ackermann, M.; Ajello, M.; Albert, A.; Anderson, B.; Atwood, W. B. B.; Baldini, L.; Barbiellini, G.; Bastieri, D.; Bellazzini, R.; Bissaldi, E.; Blandford, R. D. D.; Bloom, E. D. D.; Bonino, R.; Bottacini, E.; Brandt, T. J. J.; Bregeon, J.; Bruel, P.; Buehler, R.; Buson, S.; Caliandro, G. A. A.; Cameron, R. A. A.; Caputo, R.; D'Ammando, F.; Caragiulo, M.; Caraveo, P. A. A.; Cecchi, C.; Charles, E.; de Angelis, A.; Chekhtman, A.; Chiang, J.; de Palma, F.; Chiaro, G.; Ciprini, S.; Claus, R.; Cohen Tanugi, J.; Conrad, J.; Cuoco, A.; Cutini, S.; D’Ammando, F.; Desiante, R.; Digel, S. W. W.; Di Venere, L.; Drell, P. S. S.; Drlica Wagner, A.; Favuzzi, C.; Fegan, S. J. J.; Franckowiak, A.; Fukazawa, Y.; Funk, S.; Fusco, P.; Gargano, F.; Gasparrini, D.; Giglietto, N.; Giordano, F.; Giroletti, M.; Godfrey, G.; Gomez Vargas, G. A. A.; Grenier, I. A. A.; Grove, J. E. E.; Guiriec, S.; Gustafsson, M.; Hewitt, J. W. W.; Hill, A. B. B.; Horan, D.; Jóhannesson, G.; Johnson, R. P. P.; Kuss, M.; Larsson, S.; Latronico, L.; Li, J.; Li, L.; Longo, F.; Loparco, F.; Lovellette, M. N. N.; Lubrano, P.; Malyshev, D.; Mayer, M.; Mazziotta, M. N. N.; McEnery, J. E. E.; Michelson, P. F. F.; Mizuno, T.; Moiseev, A. A. A.; Monzani, M. E. E.; Morselli, A.; Murgia, S.; Nuss, E.; Ohsugi, T.; Orienti, M.; Orlando, E.; Ormes, J. F. F.; Paneque, D.; Pesce Rollins, M.; Piron, F.; Pivato, G.; Rainò, S.; Rando, R.; Razzano, M.; Reimer, A.; Reposeur, T.; Ritz, S.; Sánchez Conde, M.; Schulz, A.; Sgrò, C.; Siskind, E. J. J.; Spada, F.; Spandre, G.; Spinelli, P.; Tajima, H.; Takahashi, H.; Thayer, J. B. B.; Tibaldo, L.; Torres, D. F. F.; Tosti, G.; Troja, E.; Vianello, G.; Werner, M.; Winer, B. L. L.; Wood, K. S. S.; Wood, M.; Zaharijas, G.; Zimmer, S.; Collaboration, Fermi-Lat

Published in

American Physical Society, Physical Review D, 12(91)

DOI: 10.1103/physrevd.91.122002

Tools

Export citation

Search in Google Scholar

Updated Search for Spectral Lines from Galactic Dark Matter Interactions with Pass 8 Data from the Fermi Large Area Telescope

Journal article published in 2015 by M. Ackermann

, M. Ajello

, A. Albert, B. Anderson, W. B. B. Atwood, L. Baldini

, G. Barbiellini, D. Bastieri, R. Bellazzini, E. Bissaldi

, R. D. D. Blandford, E. D. D. Bloom, R. Bonino

, E. Bottacini, T. J. J. Brandt and other authors.

This paper is made freely available by the publisher.

Full text: Download

Preprint: archiving allowed

Upload

Postprint: archiving allowed

Upload

Published version: archiving allowed

Upload

Policy details

Data provided by

Abstract

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.

Published in

Links

Tools

Updated Search for Spectral Lines from Galactic Dark Matter Interactions with Pass 8 Data from the Fermi Large Area Telescope

Abstract