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White dwarfs, the most abundant stellar remnants, provide a promising means of probing dark matter (DM) interactions, complimentary to terrestrial searches. The scattering of dark matter from stellar constituents leads to gravitational…

高能物理 - 唯象学 · 物理学 2021-11-01 Nicole F. Bell , Giorgio Busoni , Maura E. Ramirez-Quezada , Sandra Robles , Michael Virgato

Previous attempts at explaining the gamma-ray excess near the Galactic Centre have focussed on dark matter annihilation directly into Standard Model particles. This results in a preferred dark matter mass of 30-40 GeV (if the annihilation…

高能物理 - 唯象学 · 物理学 2014-07-30 Celine Boehm , Matthew J. Dolan , Christopher McCabe

Dark matter with MeV scale mass is difficult to detect with standard direct search detectors. However, they can be searched for by considering the up-scattering of kinetic energies by cosmic rays. Because the dark matter density is higher…

宇宙学与河外天体物理 · 物理学 2023-08-01 Keiko I. Nagao , Satoshi Higashino , Tatsuhiro Naka , Kentaro Miuchi

Dark matter particles populating our galactic halo could be directly detected by measuring their scattering off target nuclei or electrons in a suitable detector. As this interaction is expected to occur with very low probability and would…

仪器与探测器 · 物理学 2023-06-14 Susana Cebrián

Dark matter comprises the bulk of the matter in the universe but its particle nature and cosmological origin remain mysterious. Knowledge of the dark matter density distribution in the Milky Way Galaxy is crucial to both our understanding…

We probe the gravitational force perpendicular to the Galactic plane at the position of the Sun based on a sample of red giants, with measurements taken from the DR3 Gaia catalogue. Measurements far out of the Galactic plane up to 3.5 kpc…

星系天体物理 · 物理学 2024-07-02 O. Bienaymé , A. C. Robin , J. -B. Salomon , C. Reylé

In this article, I summarize and discuss the body of evidence which has accumulated in favor of dark matter in the form of approximately 10 GeV particles. This evidence includes the spectrum and angular distribution of gamma rays from the…

宇宙学与河外天体物理 · 物理学 2012-01-09 Dan Hooper

Dark matter may be discovered through its capture in stars and subsequent annihilation. It is usually assumed that dark matter is captured after a single scattering event in the star, however this assumption breaks down for heavy dark…

高能物理 - 唯象学 · 物理学 2020-06-22 Joseph Bramante , Antonio Delgado , Adam Martin

The EGRET telescope has identified a gamma-ray source at the Galactic center. We point out here that the spectral features of this source are compatible with the gamma-ray flux induced by pair annihilations of dark matter weakly interacting…

天体物理学 · 物理学 2010-04-06 Alessandro Cesarini , Francesco Fucito , Andrea Lionetto , Aldo Morselli , Piero Ullio

Atmospheric Cerenkov Telescopes, including HESS and MAGIC, have detected a spectrum of gamma-rays from the galactic center region which extends from $\sim$200 GeV or lower, to at least $\sim$10 TeV. Although the source of this radiation is…

天体物理学 · 物理学 2008-11-26 Gabrijela Zaharijas , Dan Hooper

The galactic center excess is a possible non-gravitational observation of dark matter; however, the canonical dark matter model (thermal freeze-out) is in conflict with other gamma-ray observations, in particular those made of the Milky…

宇宙学与河外天体物理 · 物理学 2024-06-21 Steven J. Clark

Dark matter direct detection experiments are designed to look for the scattering of dark matter particles that are assumed to move with virial velocities $\sim 10^{-3}$. At these velocities, the energy deposition in the detector is large…

高能物理 - 唯象学 · 物理学 2022-08-12 Julien Billard , Matt Pyle , Surjeet Rajendran , Harikrishnan Ramani

Gamma-ray observations of Milky Way dwarf galaxies have been used to place stringent constraints on the dark matter's annihilation cross section. In this paper, we evaluate the sensitivity of the proposed Advanced Particle-astrophysics…

高能天体物理现象 · 物理学 2023-08-31 Fei Xu , Dan Hooper

The presence of dark matter in the Universe is nowadays widely supported by a large body of astronomical and cosmological observations. The central region of the Milky Way is expected to harbor a large amount of dark matter.…

高能天体物理现象 · 物理学 2019-08-14 Lucia Rinchiuso , Emmanuel Moulin

We study the impact of the interaction between DM and the cosmic neutrino background on the evolution of galactic dark matter halos. The energy transfer from the neutrinos to the dark matter can heat the center of the galaxy and make it…

高能物理 - 唯象学 · 物理学 2023-07-12 Wonsub Cho , Ki-Young Choi , Hee Jung Kim

I discuss the prospects of detecting the smallest dark matter bound structures present in the Milky Way by searching for the proper motion of $\gamma$-ray sources in the upcoming GLAST all sky map. I show that for dark matter particle…

天体物理学 · 物理学 2008-11-26 Savvas M. Koushiappas

Stringent constraints from direct detection experiments and the Large Hadron Collider motivate us to consider models in which the dark matter does not directly couple to the Standard Model, but that instead annihilates into hidden sector…

高能物理 - 唯象学 · 物理学 2017-12-13 Miguel Escudero , Samuel J. Witte , Dan Hooper

The detection of exotic cosmic rays due to pair annihilation of dark matter particles in the Milky Way halo is a viable techniques to search for supersymmetric dark matter candidates. The study of the spectrum of gamma-rays, antiprotons and…

天体物理学 · 物理学 2008-11-26 Aldo Morselli , Andrea Lionetto , Alessandro Cesarini , Francesco Fucito , Piero Ullio

We test the luminosity function of Milky Way satellites as a constraint for the nature of Dark Matter particles. We perform dissipationless high-resolution N-body simulations of the evolution of Galaxy-sized halo in the standard Cold Dark…

宇宙学与河外天体物理 · 物理学 2015-05-14 Andrea V. Maccio' , Fabio Fontanot

Recent observations of high-energy neutrinos from active galactic nuclei (AGN), NGC 1068 and TXS 0506+056, suggest that cosmic rays (CRs) are accelerated in the vicinity of the central supermassive black hole and high-energy protons and…

高能物理 - 唯象学 · 物理学 2024-07-25 Gonzalo Herrera , Kohta Murase