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Dark Matter (DM) annihilation in our Galaxy may produce a linearly polarized synchrotron signal. We use, for the first time, synchrotron polarization to constrain the DM annihilation cross section by comparing theoretical predictions with…

High Energy Astrophysical Phenomena · Physics 2022-09-13 Silvia Manconi , Alessandro Cuoco , Julien Lesgourgues

PAMELA's observation that the cosmic ray positron fraction increases rapidly with energy implies the presence of primary sources of energetic electron-positron pairs. Of particular interest is the possibility that dark matter annihilations…

High Energy Physics - Phenomenology · Physics 2014-11-20 Dan Hooper , Kathryn M. Zurek

Direct detection experiments utilizing electronic excitations are spearheading the search for light, sub-GeV, dark matter (DM). It is thus crucial to have accurate predictions for any DM-electron interaction rate in this regime. EXCEED-DM…

High Energy Physics - Phenomenology · Physics 2023-03-16 Tanner Trickle

Quantitative modeling of the spectro-spatial distributions of energetic electrons and protons in galactic halos is needed in order to determine their interactions with the local plasma and radiation fields, and also to estimate their…

High Energy Astrophysical Phenomena · Physics 2019-04-17 Yoel Rephaeli , Sharon Sadeh

MAGIC is a system of two Cherenkov telescopes located in the Canary island of La Palma. A key part of MAGIC Fundamental Physics program is the search for indirect signals of Dark Matter (DM) from different sources. In the Milky Way, DM…

We present a new technique for sub-GeV dark matter (DM) searches and a new use of neutrino observatories. DM-electron scattering in an observatory can excite or ionize target molecules, which then produce light that can be detected by the…

High Energy Physics - Phenomenology · Physics 2025-10-21 Rebecca K. Leane , John F. Beacom

In this work we characterize the distribution of Dark Matter (DM) in the Milky Way (MW), and its uncertainties, adopting the well known "Rotation Curve" method. We perform a full marginalization over the uncertainties of the Galactic…

Astrophysics of Galaxies · Physics 2019-06-12 Maria Benito , Alessandro Cuoco , Fabio Iocco

In addition to gamma-rays, dark matter annihilation products can include energetic electrons which inverse Compton scatter with the cosmic microwave background to produce a diffuse extragalactic background of gamma-rays and X-rays. In…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-13 Alexander V. Belikov , Dan Hooper

Particles with TeV mass and strong self-interactions generically have the right annihilation cross section to explain an observed excess of cosmic electrons and positrons if the end-product of the annihilation is charged leptons. We present…

High Energy Physics - Phenomenology · Physics 2010-08-12 Yi Cai , David E. Kaplan , Markus A. Luty

In recent years, a number of experiments have been conducted with the goal of studying cosmic rays at GeV to TeV energies. This is a particularly interesting regime from the perspective of indirect dark matter detection. To draw reliable…

High Energy Astrophysical Phenomena · Physics 2009-11-05 Melanie Simet , Dan Hooper

Recent results from PAMELA and ATIC hint that O(TeV) dark matter (DM) is annihilating, in our galactic neighborhood, predominantly to leptons. The annihilation rate is much larger now than during freeze-out, one possible explanation of this…

High Energy Physics - Phenomenology · Physics 2009-05-29 Cedric Delaunay , Patrick J. Fox , Gilad Perez

Dark matter annihilation into charged particles is necessarily accompanied by gamma rays, produced via radiative corrections. Internal bremsstrahlung from the final state particles can produce hard gamma rays up to the dark matter mass,…

Astrophysics · Physics 2010-02-01 Nicole F. Bell , Thomas D. Jacques

We present Self-Destructing Dark Matter (SDDM), a new class of dark matter models which are detectable in large neutrino detectors. In this class of models, a component of dark matter can transition from a long-lived state to a short-lived…

High Energy Physics - Phenomenology · Physics 2019-07-04 Yuval Grossman , Roni Harnik , Ofri Telem , Yue Zhang

Based on 4 yr AMS-02 antiproton data, we present bounds on the dark matter (DM) annihilation cross section vs. mass for some representative final state channels. We use recent cosmic-ray propagation models, a realistic treatment of…

High Energy Physics - Phenomenology · Physics 2022-05-18 Francesca Calore , Marco Cirelli , Laurent Derome , Yoann Genolini , David Maurin , Pierre Salati , Pasquale D. Serpico

In this paper we explore interactions between neutrinos and Dark Matter. In particular, we study how the propagation of astrophysical neutrinos can be modified by computing the most general potential generated by the galactic DM background.…

High Energy Physics - Phenomenology · Physics 2023-03-22 Gabriel M. Salla

Among various approaches for indirect detection of dark matter, synchrotron emission due to secondary electrons/positrons produced in galactic WIMPs annihilation is raising an increasing interest. In this paper we propose a new method to…

High Energy Astrophysical Phenomena · Physics 2010-01-15 Enrico Borriello , Giuseppe Longo , Gennaro Miele , Maurizio Paolillo , Beatriz B. Siffert , Fatemeh S. Tabatabaei , Rainer Beck

We study the possible indirect neutrino signal from dark matter annihilations inside the solar interior for relatively light dark matter masses in the O(10) GeV range. Due to their excellent energy reconstruction capabilities, we focus on…

High Energy Physics - Phenomenology · Physics 2015-06-15 Mattias Blennow , Marcus Carrigan , Enrique Fernandez Martinez

A possible hint of dark matter annihilation has been found in Cuoco, Korsmeier and Kr\"amer (2017) from an analysis of recent cosmic-ray antiproton data from AMS-02 and taking into account cosmic-ray propagation uncertainties by fitting at…

High Energy Astrophysical Phenomena · Physics 2017-11-07 Alessandro Cuoco , Jan Heisig , Michael Korsmeier , Michael Krämer

If DM-matter scatterings are assumed to occur in a detector's target material, collisions will naturally take place inside the bulk of planets and stars as well. For large cross sections, these scatterings might occur in the Earth or Sun…

High Energy Physics - Phenomenology · Physics 2019-06-19 Timon Emken

Weakly interacting massive dark matter (DM) particles are expected to self-annihilate or decay, generating high-energy photons in these processes. This establishes the possibility for indirect detection of DM by \gamma-ray telescopes. For…

Cosmology and Nongalactic Astrophysics · Physics 2015-08-17 Moritz Hütten , Gernot Maier