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In the frame of indirect dark matter searches we investigate the flux of high-energy $\gamma$-ray photons produced by annihilation of dark matter in caustics within our Galaxy under the hypothesis that the bulk of dark matter is composed of…

Astrophysics · Physics 2009-11-11 Lidia Pieri , Enzo Branchini

Dark matter particles gravitationally trapped inside the Sun may annihilate into Standard Model particles, producing a flux of neutrinos. The prospects of detecting these neutrinos in future multi-\kton{} neutrino detectors designed for…

High Energy Physics - Phenomenology · Physics 2015-03-19 Sanjib K. Agarwalla , Mattias Blennow , Enrique Fernandez Martinez , Olga Mena

Under the assumption that dark matter is made of new particles, annihilations of those are required to reproduce the correct dark matter abundance in the Universe. This process can occur in dense regions of our Galaxy such as the Galactic…

High Energy Astrophysical Phenomena · Physics 2015-05-27 Pierre Brun

It is possible that the strongest interactions between dark matter and the Standard Model occur via the neutrino sector. Unlike gamma rays and charged particles, neutrinos provide a unique avenue to probe for astrophysical sources of dark…

High Energy Physics - Phenomenology · Physics 2023-11-07 Carlos A. Argüelles , Diyaselis Delgado , Avi Friedlander , Ali Kheirandish , Ibrahim Safa , Aaron C. Vincent , Henry White

High energy gamma-rays and neutrinos can be produced both by the annihilation and by the possible slow decay of dark matter particles. We discuss the fluxes and spectra of such secondaries produced by dark matter particles in the universe…

Astrophysics · Physics 2009-10-28 F. W. Stecker

We consider dark matter models in which the mass splitting between the dark matter particles and their annihilation products is tiny. Compared to the previously proposed Forbidden Dark Matter scenario, the mass splittings we consider are…

High Energy Physics - Phenomenology · Physics 2019-07-09 Joachim Kopp , Jia Liu , Tracy R. Slatyer , Xiao-Ping Wang , Wei Xue

Dark Matter can form bound states upon the emission of quanta of energy equal to the binding energy. The rate of this process is large for strongly-interacting Dark Matter, and further enhanced by long distance effects. The resulting…

High Energy Physics - Phenomenology · Physics 2020-07-15 Rakhi Mahbubani , Michele Redi , Andrea Tesi

If dark matter (DM) annihilation accounts for the tantalizing excess of cosmic ray electron/positrons, as reported by the PAMELA, ATIC, HESS and FERMI observatories, then the implied annihilation cross section must be relatively large. This…

High Energy Physics - Phenomenology · Physics 2012-03-15 A. A. El-Zant , S. Khalil , H. Okada

Dark matter and neutrinos provide the two most compelling pieces of evidence for new physics beyond the Standard Model of Particle Physics but they are often treated as two different sectors. In this paper, we consider how neutrino…

High Energy Physics - Phenomenology · Physics 2018-05-28 Andres Olivares-Del Campo , Sergio Palomares-Ruiz , Silvia Pascoli

A search for muon neutrinos originating from dark matter annihilations in the Sun is performed using the data recorded by the ANTARES neutrino telescope from 2007 to 2012. In order to obtain the best possible sensitivities to dark matter…

High Energy Astrophysical Phenomena · Physics 2016-06-13 ANTARES collaboration , S. Adrián-Martínez , A. Albert , M. André , G. Anton , M. Ardid , J. -J. Aubert , T. Avgitas , B. Baret , J. Barrios-Martí , S. Basa , V. Bertin , S. Biagi , R. Bormuth , M. C. Bouwhuis , R. Bruijn , J. Brunner , J. Busto , A. Capone , L. Caramete , J. Carr , S. Celli , T. Chiarusi , M. Circella , A. Coleiro , R. Coniglione , H. Costantini , P. Coyle , A. Creusot , A. Deschamps , G. De Bonis , C. Distefano , C. Donzaud , D. Dornic , D. Drouhin , T. Eberl , I. El Bojaddaini , D. Elsässer , A. Enzenhöfer , K. Fehn , I. Felis , L. A. Fusco , S. Galatà , P. Gay , S. Geißelsöder , K. Geyer , V. Giordano , A. Gleixner , H. Glotin , R. Gracia-Ruiz , K. Graf , S. Hallmann , H. van Haren , A. J. Heijboer , Y. Hello , J. J. Hernández-Rey , J. Hößl , J. Hofestädt , C. Hugon , G. Illuminati , C. W James , M. de Jong , M. Jongen , M. Kadler , O. Kalekin , U. Katz , D. Kießling , A. Kouchner , M. Kreter , I. Kreykenbohm , V. Kulikovskiy , C. Lachaud , R. Lahmann , D. Lefèver , E. Leonora , S. Loucatos , M. Marcelin , A. Margiotta , A. Marinelli , J. A. Martínez-Mora , A. Mathieu , K. Melis , T. Michael , P. Migliozzi , A. Moussa , C. Mueller , E. Nezri , G. E. Păvălaş , C. Pellegrino , C. Perrina , P. Piattelli , V. Popa , T. Pradier , C. Racca , G. Riccobene , K. Roensch , M. Saldana , D. F. E. Samtleben , A. Sánchez-Losa , M. Sanguineti , P. Sapienza , J. Schnabel , F. Schüssler , T. Seitz , C. Sieger , M. Spurio , Th. Stolarczyk , M. Taiuti , C. Tönnis , A. Trovato , M. Tselengidou , D. Turpin , B. Vallage , C. Vallée , V. Van Elewyck , D. Vivolo , S. Wagner , J. Wilms , J. D. Zornoza , J. Zúñiga

Current cosmological models and data suggest the existence of a Cold Dark Matter (DM) component, however the nature of DM particles remains unknown. A favored candidate for DM is a Weakly Interacting Massive Particle (WIMP) in the mass…

High Energy Astrophysical Phenomena · Physics 2019-08-13 Jeffrey Grube

Cosmic-ray antiprotons represent an important channel for dark matter indirect-detection studies. Current measurements of the antiproton flux at the top of the atmosphere and theoretical determinations of the secondary antiproton production…

High Energy Physics - Phenomenology · Physics 2015-02-02 N. Fornengo , L. Maccione , A. Vittino

We study the evolution of heavy stars ($M\ge40{\rm M}_\odot$) undergoing pair-instability in the presence of annihilating dark matter. Focusing on the scenario where the dark matter is in capture-annihilation equilibrium, we model the…

High Energy Astrophysical Phenomena · Physics 2024-07-30 Djuna Croon , Jeremy Sakstein

The $\gamma$-ray and neutrino emissions from dark matter (DM) annihilation in galaxy clusters are studied. After about one year operation of Fermi-LAT, several nearby clusters are reported with stringent upper limits of GeV $\gamma$-ray…

High Energy Astrophysical Phenomena · Physics 2015-03-13 Qiang Yuan , Peng-Fei Yin , Xiao-Jun Bi , Xin-Min Zhang , Shou-Hua Zhu

We examine observational signatures of dark matter annihilation in the Milky Way arising from electroweak bremsstrahlung contributions to the annihilation cross section. It has been known for some time that photon bremsstrahlung may…

High Energy Physics - Phenomenology · Physics 2012-05-24 Nicole F. Bell , James B. Dent , Thomas D. Jacques , Thomas J. Weiler

The cosmic-ray excess observed by PAMELA in the positron fraction and by FERMI and HESS in the electron + positron flux can be interpreted in terms of DM annihilations or decays into leptonic final states. Final states into tau's or 4mu…

High Energy Physics - Phenomenology · Physics 2010-02-24 Patrick Meade , Michele Papucci , Alessandro Strumia , Tomer Volansky

High energy neutrinos are produced by the annihilation of dark matter particles in our galaxy. These are presently searched for with large area, deep underground neutrino telescopes. Cold dark matter particles, trapped inside the sun, are…

High Energy Physics - Phenomenology · Physics 2009-09-25 F. Halzen , J. E. Jacobsen

Some direct detection experiments have recently collected excess events that could be interpreted as a dark matter (DM) signal, pointing to particles in the $\sim$10 GeV mass range. We show that scenarios in which DM can self-annihilate…

High Energy Astrophysical Phenomena · Physics 2015-06-03 Julien Lavalle

We use six, high-resolution $\Lambda$CDM simulations of galaxy formation to study how emission from dark matter annihilation is affected by baryonic processes. These simulations produce isolated, disc-dominated galaxies with structure,…

Astrophysics of Galaxies · Physics 2021-01-06 Robert J J Grand , Simon D M White

We derive robust model-independent bounds on DM annihilations and decays from the first year of FERMI gamma-ray observations of the whole sky. These bounds only have a mild dependence on the DM density profile and allow the following DM…

High Energy Physics - Phenomenology · Physics 2014-11-20 Michele Papucci , Alessandro Strumia
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