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Dark matter candidates such as weakly-interacting massive particles are predicted to annihilate or decay into Standard Model particles leaving behind distinctive signatures in gamma rays, neutrinos, positrons, antiprotons, or even…

高能天体物理现象 · 物理学 2017-06-01 Jan Conrad , Olaf Reimer

For nearly 40 years, dark matter has been widely assumed to be cold and collisionless. Cold dark matter models make fundamental predictions for the behavior of dark matter on small (<10 kpc) scales. These predictions include cuspy density…

The indirect detection of dark matter particles with mass below the GeV scale has recently received significant attention. Future space-borne gamma-ray telescopes, including All-Sky-ASTROGAM, AMEGO, and GECCO, will probe the MeV gamma-ray…

高能物理 - 唯象学 · 物理学 2021-08-25 Adam Coogan , Logan Morrison , Stefano Profumo

Surveys open up unbiased discovery space and generate legacy datasets of long-lasting value. One of the goals of imaging arrays of Cherenkov telescopes like CTA is to survey areas of the sky for faint very high energy gamma-ray (VHE)…

高能天体物理现象 · 物理学 2019-08-14 G. Dubus , J. L. Contreras , S. Funk , Y. Gallant , T. Hassan , J. Hinton , Y. Inoue , J. Knödlseder , P. Martin , N. Mirabal , M. de Naurois , M. Renaud

Gamma-ray lines constitute a smoking gun signature for annihilating dark matter particles. Imaging Atmospheric Cherenkov Telescopes and satellites have searched for such signals but null results have been reported thus far. We take…

高能物理 - 唯象学 · 物理学 2025-09-11 Lucia Angel , Debasish Borah , Jacinto P. Neto , Farinaldo S. Queiroz , Vitor de Souza

Constraints on the indirect detection of dark matter are usually obtained from observations of astrophysical objects -- the Galactic Center, dwarf galaxies, M31, etc. Here we propose instead to look for the annihilation or decay of dark…

高能物理 - 唯象学 · 物理学 2021-10-27 Teresa Marrodán Undagoitia , Werner Rodejohann , Tim Wolf , Carlos E. Yaguna

We investigate the predictions of anomaly-free dark matter models for direct and indirect detection experiments. We focus on gauge theories where the existence of a fermionic dark matter candidate is predicted by anomaly cancellation, its…

高能物理 - 唯象学 · 物理学 2019-07-24 Pavel Fileviez Perez , Elliot Golias , Rui-Hao Li , Clara Murgui , Alexis D. Plascencia

When comparing constraints on the Weakly Interacting Massive Particle (WIMP) properties from direct and indirect detection experiments it is crucial that the assumptions made about the dark matter (DM) distribution are realistic and…

宇宙学与河外天体物理 · 物理学 2016-08-24 David G. Cerdeno , Mattia Fornasa , Anne M. Green , Miguel Peiro

For the first time, we use the Gamma-ray Burst Monitor (GBM) on-board the Fermi satellite to search for sterile neutrino decay lines in the energy range 10-25 keV corresponding to sterile neutrino mass range 20-50 keV. This energy range has…

高能天体物理现象 · 物理学 2015-02-12 Shunsaku Horiuchi , Kenny C. Y. Ng , Jennifer M. Gaskins , Miles Smith , Robert Preece

In many Dark Matter (DM) scenarios, the annihilation of DM particles can produce gamma rays with a continuum spectrum that extends up to very high energies of the order of the electroweak symmetry breaking scale (hundreds of GeV).…

Thermal relic dark matter below $\sim 10 \ \text{GeV}$ is excluded by cosmic microwave background data if its annihilation to visible particles is unsuppressed near the epoch of recombination. Usual model-building measures to avoid this…

高能物理 - 唯象学 · 物理学 2023-11-02 Asher Berlin , Gordan Krnjaic , Elena Pinetti

The next generation of ground-based Imaging Air Cherenkov Telescopes (IACTs) will play an important role in indirect dark matter searches. In this article, we consider two particularly promising candidate sources for dark matter…

天体物理学 · 物理学 2010-05-27 Torsten Bringmann , Michele Doro , Mattia Fornasa

Certain models of inert multiplets allow for semi-annihilation processes, in which two dark matter candidates annihilate to a dark matter particle and a non-dark matter particle. The existence of these processes can alleviate certain…

高能物理 - 唯象学 · 物理学 2024-07-02 Hugues Beauchesne , Cheng-Wei Chiang

Indirect searches for products of dark matter annihilation and decay face the challenge of identifying an uncertain and subdominant signal in the presence of uncertain backgrounds. Two valuable approaches to this problem are (1) using…

高能天体物理现象 · 物理学 2015-12-16 Jennifer M. Siegal-Gaskins

Indirect detection of particle dark matter relies upon pair annihilation of Weakly Interaction Massive Particles (WIMPs), which is complementary to the well known techniques of direct detection (WIMP-nucleus scattering) and collider…

天体物理学 · 物理学 2008-11-26 Lawrence Wai , GLAST LAT Collaboration

Dark matter is one of the most important open problems in particle physics and cosmology. Weakly interacting massive particles (WIMPs) appear as an appealing solution, providing the right relic density with a cross-section at the…

高能物理 - 唯象学 · 物理学 2021-10-04 C. Siqueira , Guilherme N. Fortes , Aion Viana , Farinaldo Queiroz

Indirect detection of dark matter particles, i.e. the detection of annihilation or decay products of Weakly Interacting Massive Particles, has entered a pivotal phase as experiments reach sensitivities that probe the most interesting…

高能物理 - 唯象学 · 物理学 2014-11-10 Jan Conrad

In the indirect dark matter (DM) detection framework, the DM particles would produce some signals by self-annihilating and creating standard model products such as gamma rays, which might be detected by ground-based telescopes. Dwarf…

高能天体物理现象 · 物理学 2019-10-22 Celine Armand , Emmanuel Moulin , Vincent Poireau , Lucia Rinchiuso

High-energetic gamma rays from astrophysical targets constitute a unique probe for annihilation or decay of heavy particle dark matter (DM). After several decades, diverse null detections have resulted in strong constraints for DM particle…

高能天体物理现象 · 物理学 2022-09-14 Moritz Hütten , Daniel Kerszberg