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

Journal article

Publication Details

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, Johannesson 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, Raino S, Rando R, Razzano M, Reimer A, Reposeur T, Ritz S, Sanchez-Conde M, Schulz A, Sgro C, Siskind EJ, Spada F, Spandre G, Spinelli P, Tajima H, Takahashi H, Thayer JB, Tibaldo L, Torres DF, Tosti G, Troja E, Vianello G, Werner M, Winer BL, Wood KS, Wood M, Zaharijas G, Zimmer S
Journal: Physical Review D - Particles, Fields, Gravitation and Cosmology
Publisher: American Physical Society
Publication year: 2015
Volume: 91
ISSN: 1550-7998


Dark matter in the Milky Way may annihilate directly into. 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.

FAU Authors / FAU Editors

Funk, Stefan Prof. Dr.
Lehrstuhl für Physik

External institutions with authors

AlbaNova University Centre / Kungliga Tekniska Högskolan AlbaNova Universitetscentrum
Clemson University
Commissariat à l'énergie atomique
Deutsches Elektronen-Synchrotron DESY
École Polytechnique - Université Paris-Saclay
Fermi National Accelerator Laboratory (Fermilab)
Georg-August-Universität Göttingen
Hiroshima University
Leopold-Franzens-Universität Innsbruck / University of Innsbruck
National Aeronautics and Space Administration (NASA)
National Institute for Astrophysics / Istituto Nazionale Astrofisica (INAF)
National Institute for Nuclear Physics / Istituto Nazionale di Fisica Nucleare (INFN)
NYCB Real-Time Computing, Inc.
Ohio State University
Politecnico di Bari
Spanish National Research Council / Consejo Superior de Investigaciones Científicas (CSIC)
Stanford University
Stockholm University / Stockholms universitet
Université Bordeaux 1, Sciences et Technologies
University of California Irvine
University of California Santa Cruz
University of Denver
University of Iceland (UI)
University of Maryland
University of Maryland, Baltimore County
University of Montpellier / Université Montpellier
University of Padua
University of Udine / Università degli Studi di Udine
U.S. Naval Research Laboratory

How to cite

Ackermann, M., Ajello, M., Albert, A., Anderson, B., Atwood, W.B., Baldini, L.,... Zimmer, S. (2015). Updated search for spectral lines from Galactic dark matter interactions with pass 8 data from the Fermi Large Area Telescope. Physical Review D - Particles, Fields, Gravitation and Cosmology, 91. https://dx.doi.org/10.1103/PhysRevD.91.122002

Ackermann, M., et al. "Updated search for spectral lines from Galactic dark matter interactions with pass 8 data from the Fermi Large Area Telescope." Physical Review D - Particles, Fields, Gravitation and Cosmology 91 (2015).


Last updated on 2019-20-03 at 15:53