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Dark matter implications of Fermi-LAT measurement of anisotropies in the diffuse gamma-ray background

Gómez-Vargas, G. A. and Cuoco, A. and Linden, T. and Sánchez-Conde, M. A. and Siegal-Gaskins, J. M. and Delahaye, T. and Fornasa, M. and Komatsu, E. and Prada, F. and Zavala, J. (2014) Dark matter implications of Fermi-LAT measurement of anisotropies in the diffuse gamma-ray background. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 742 . pp. 149-153. ISSN 0168-9002. https://resolver.caltech.edu/CaltechAUTHORS:20140501-152843431

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Abstract

The detailed origin of the diffuse gamma-ray background is still unknown. However, the contribution of unresolved sources is expected to induce small-scale anisotropies in this emission, which may provide a way to identify and constrain the properties of its contributors. Recent studies have predicted the contributions to the angular power spectrum (APS) from extragalactic and galactic dark matter (DM) annihilation or decay. The Fermi-LAT collaboration reported detection of angular power with a significance larger than 3σ3σ in the energy range from 1 GeV to 10 GeV on 22 months of data (Ackermann et al., 2012 [2]). For these preliminary results the already published Fermi-LAT APS measurements (Ackermann et al., 2012 [2]) are compared to the accurate predictions for DM anisotropies from state-of-the-art cosmological simulations as presented in Fornasa et al. (2013) [1] to derive constraints on different DM candidates.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/j.nima.2013.11.009DOIArticle
http://www.sciencedirect.com/science/article/pii/S016890021301509XPublisherArticle
http://arxiv.org/abs/1303.2154arXivWorking Paper
ORCID:
AuthorORCID
Komatsu, E.0000-0002-0136-2404
Zavala, J.0000-0002-7051-1100
Additional Information:© 2013 Elsevier B.V. Available online 16 November 2013. This work was partially supported by the Spanish MINECO's Consolider-Ingenio 2010 Programme under Grant MultiDark CSD2009-00064. The work of GAGV was supported in part by MINECO under Grants FPA2009-08958, FPA2009-09017 and FPA2012-34694, and under the ‘Centro de Excelencia Severo Ochoa’ Programme SEV-2012-0249, by the Comunidad de Madrid under Grant HEPHACOS S2009/ESP-1473, and by the European Union under the Marie Curie-ITN program PITN-GA-2009-237920. GAGV thanks Caltech for hospitality during the completion of this work. The work of TD was supported in part by the ANR project DMAstroLHC, ANR-12-BS05-0006-01. JZ is supported by the University of Waterloo and the Perimeter Institute for Theoretical Physics. Research at Perimeter Institute is supported by the Government of Canada through Industry Canada and by the Province of Ontario through the Ministry of Research & Innovation. JZ acknowledges financial support by a CITA National Fellowship. The Fermi LAT Collaboration acknowledges support from a number of agencies and institutes for both development and the operation of the LAT as well as scientific data analysis. These include NASA and DOE in the United States, CEA/Irfu and IN2P3/CNRS in France, ASI and INFN in Italy, MEXT, KEK, and JAXA in Japan, and the K.A. Wallenberg Foundation, the Swedish Research Council and the National Space Board in Sweden. Additional support from INAF in Italy and CNES in France for science analysis during the operations phase is also gratefully acknowledged.
Funders:
Funding AgencyGrant Number
Ministerio de Economía, Industria y Competitividad (MINECO)MultiDark CSD2009-00064
Ministerio de Economía, Industria y Competitividad (MINECO)FPA2009-08958
Ministerio de Economía, Industria y Competitividad (MINECO)FPA2009-09017
Ministerio de Economía, Industria y Competitividad (MINECO)FPA2012-34694
Centro de Excelencia Severo Ochoa’ ProgrammeSEV-2012-0249
Comunidad de MadridHEPHACOS S2009/ESP-1473
Marie Curie FellowshipPITN-GA-2009-237920
Agence Nationale de la Recherche (ANR)ANR-12-BS05-0006-01
University of WaterlooUNSPECIFIED
Perimeter Institute for Theoretical PhysicsUNSPECIFIED
Industry CanadaUNSPECIFIED
Ontario Ministry of Research & InnovationUNSPECIFIED
Canadian Institute for Theoretical AstrophysicsUNSPECIFIED
NASAUNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
Commissariat à l’Energie Atomique (CEA)UNSPECIFIED
Institut National de Physique Nucléaire et de Physique des Particules (IN2P3)UNSPECIFIED
Agenzia Spaziale Italiana (ASI)UNSPECIFIED
Ministry of Education, Culture, Sports, Science and Technology (MEXT)UNSPECIFIED
High Energy Accelerator Research Organization (KEK)UNSPECIFIED
Japan Aerospace Exploration Agency (JAXA)UNSPECIFIED
Knut and Alice Wallenberg FoundationUNSPECIFIED
Swedish Research CouncilUNSPECIFIED
Swedish National Space Board (SNSB)UNSPECIFIED
Istituto Nazionale di Astrofisica (INAF)UNSPECIFIED
Centre National d'Études Spatiales (CNES)UNSPECIFIED
Institut de recherche sur les lois fondamentales de l'Univers (Irfu)UNSPECIFIED
Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Subject Keywords:Astroparticle physics; Extragalactic gamma-ray background; Dark matter; Anisotropies
Record Number:CaltechAUTHORS:20140501-152843431
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140501-152843431
Official Citation:G.A. Gómez-Vargas, A. Cuoco, T. Linden, M.A. Sánchez-Conde, J.M. Siegal-Gaskins, T. Delahaye, M. Fornasa, E. Komatsu, F. Prada, J. Zavala, on behalf of the Fermi-LAT Collaboration, Dark matter implications of Fermi-LAT measurement of anisotropies in the diffuse gamma-ray background, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Volume 742, 1 April 2014, Pages 149-153, ISSN 0168-9002, http://dx.doi.org/10.1016/j.nima.2013.11.009. (http://www.sciencedirect.com/science/article/pii/S016890021301509X)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:45447
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:02 May 2014 16:37
Last Modified:09 Mar 2020 13:19

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