Prospects for indirect dark matter searches with the Cherenkov Telescope Array (CTA)

J. Carr, C. Balazs, T. Bringmann, T. Buanes, M. K. Daniel, M. Doro, C. Farnier, M. Fornasa, J. Gaskins, G. A. Gomez-Vargas, M. Hayashida, K. Kohri, V. Lefranc, A. Morselli, E. Moulin, N. Mirabal, J. Rico, T. Saito, M. A. Sánchez-Conde, M. WilkinsonM. Wood, G. Zaharijas, H. S. Zechlin

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearch

6 Citations (Scopus)

Abstract

The Cherenkov Telescope Array (CTA) will have a unique chance of discovery for a large range of masses in Weakly Interacting Massive Particles models of dark matter. The principal target for dark matter searches with CTA is the centre of the Galactic Halo. The best strategy is to perform CTA observations within a few degrees of the Galactic Centre, with the Galactic Centre itself and the most intense diffuse emission regions removed from the analysis. Assuming a cuspy dark matter density profile for the Milky Way, 500 hours of observations in this region provide sensitivities to and below the thermal cross-section of dark matter annihilations, for masses between a few hundred GeV and a few tens of TeV; therefore CTA will have a significant chance of discovery in some models. Since the dark matter density in the Milky Way is far from certain in the inner kpc region, other targets are also proposed for observation, like ultra-faint dwarf galaxies such as Segue 1 with 100 hours per year proposed. Beyond these two observational targets, further alternatives, such as Galactic dark clumps, will be considered closer to the actual date of CTA operations. Sensitivity predictions for dark matter searches are given on the various targets taking into account the latest instrument response functions expected for CTA together with a discussion on the systematic uncertainties from the backgrounds.

Original languageEnglish
Title of host publicationICRC
Subtitle of host publicationThe Astroparticle Physics Conference
EditorsAd Van Den Berg
PublisherScuola Internazionale Superiore di Studi Avanzati (S I S S A)
Number of pages8
Publication statusPublished - 2015
EventInternational Cosmic Ray Conference 2015 - World Forum, The Hague, Netherlands
Duration: 30 Jul 20156 Aug 2015
Conference number: 34
http://icrc2015.nl/

Publication series

NameProceedings of Science
PublisherScuola Internazionale Superiore di Studi Avanzati (S I S S A)
VolumeICRC2015
ISSN (Electronic)1824-8039

Conference

ConferenceInternational Cosmic Ray Conference 2015
Abbreviated titleICRC 2015
CountryNetherlands
CityThe Hague
Period30/07/156/08/15
Internet address

Cite this

Carr, J., Balazs, C., Bringmann, T., Buanes, T., Daniel, M. K., Doro, M., Farnier, C., Fornasa, M., Gaskins, J., Gomez-Vargas, G. A., Hayashida, M., Kohri, K., Lefranc, V., Morselli, A., Moulin, E., Mirabal, N., Rico, J., Saito, T., Sánchez-Conde, M. A., ... Zechlin, H. S. (2015). Prospects for indirect dark matter searches with the Cherenkov Telescope Array (CTA). In A. Van Den Berg (Ed.), ICRC: The Astroparticle Physics Conference [1203] (Proceedings of Science; Vol. ICRC2015). Scuola Internazionale Superiore di Studi Avanzati (S I S S A).