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The search for Dark Matter (DM) has great potential to reveal physics beyond the Standard Model. As such, searches for evidence of DM particles are being carried out using a wide range of techniques, such as direct searches for DM…

Some candidate dark matter particles, such as neutralinos in supersymmetry, would annihilate producing GeV/TeV gamma rays. We report on recent observations of two dwarf spheroid galaxies, Draco, Ursa Minor, the compact elliptical galaxy…

Astrophysics · Physics 2019-08-14 J. Hall

The detection of gamma-rays from dark matter (DM) annihilation is among the scientific goals of the Fermi Large Area Telescope (formerly known as GLAST) and Cherenkov telescopes. In this paper we investigate the existence of realistic…

Astrophysics · Physics 2009-11-13 L. Pieri , A. Pizzella , E. M. Corsini , E. Dalla Bonta' , F. Bertola

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…

Astrophysics · Physics 2008-11-26 Lawrence Wai , GLAST LAT Collaboration

Weakly interacting massive particles (WIMPs) can self-annihilate, thus providing us with a way to indirectly detect dark matter (DM). Dwarf spheroidal (dSph) galaxies are excellent places to search for annihilation signals because they are…

Cosmology and Nongalactic Astrophysics · Physics 2023-06-09 L. Gajović , F. Welzmüller , V. Heesen , F. de Gasperin , M. Vollmann , M. Brüggen , A. Basu , R. Beck , D. J. Schwarz , D. J. Bomans , A. Drabent

Recent discoveries of optical signatures of black holes in dwarf galaxies indicates that low-mass galaxies can indeed host intermediate massive black holes. This motivates the assessment of the resulting effect on the host dark matter…

High Energy Astrophysical Phenomena · Physics 2015-06-19 Alma X. Gonzalez-Morales , Stefano Profumo , Farinaldo S. Queiroz

Dwarf irregular galaxies (dIrrs) are rotationally supported galaxies with a low star formation rate. Thus, their gamma-ray astrophysical emission is expected to be low, making them interesting targets for WIMP dark matter (DM) indirect…

High Energy Astrophysical Phenomena · Physics 2026-05-07 Jaume Zuriaga-Puig , Viviana Gammaldi , Miguel Á. Sánchez-Conde

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…

High Energy Astrophysical Phenomena · Physics 2019-10-22 Celine Armand , Emmanuel Moulin , Vincent Poireau , Lucia Rinchiuso

Dwarf spheroidal galaxies are characterized by a large measured mass-to-light ratio and are not expected to be the site of high-luminosity non-thermal high-energy gamma-ray emissions. Therefore they are among the most promising candidates…

High Energy Astrophysical Phenomena · Physics 2019-08-17 G. Lamanna , C. Farnier , A. Jacholkowska , M. Kieffer , C. Trichard

We discuss the indirect detection of the wino dark matter utilizing gamma-ray observations of dwarf spheroidal galaxies (dSphs). After carefully reviewing current limits with particular attention to astrophysical uncertainties, we show…

High Energy Physics - Phenomenology · Physics 2014-10-03 Biplob Bhattacherjee , Masahiro Ibe , Koji Ichikawa , Shigeki Matsumoto , Kohei Nishiyama

We investigate dwarf irregular(dIrr) galaxies as a new category of targets for indirect Dark Matter(DM) searches with gamma-rays. In the framework of point-like analysis, dwarf spheroidal(dSph) galaxies are usually considered as one of the…

Cosmology and Nongalactic Astrophysics · Physics 2018-10-24 V. Gammaldi , E. V. Karukes , P. Salucci

The search for emission from weakly interacting massive particle (WIMP) dark matter annihilation and decay has become a multi-pronged area of research not only targeting a diverse selection of astrophysical objects, but also taking…

In this work, we search for $\gamma$-ray emission from the directions of some nearby Milky Way dwarf spheroidal galaxies (dSphs) and candidates with the publicly-available Pass 8 data of Fermi-LAT. Our sample includes 12 sources with the…

High Energy Astrophysical Phenomena · Physics 2018-07-04 Shang Li , Kai-Kai Duan , Yun-Feng Liang , Zi-Qing Xia , Zhao-Qiang Shen , Xiang Li , Neng-Hui Liao , Lei Feng , Qiang Yuan , Yi-Zhong Fan , Jin Chang

Dwarf spheroidal galaxies (dSphs) are promising targets for the indirect detection of dark matter through gamma-ray emission due to their proximity, lack of astrophysical backgrounds and high dark matter density. They are often used to…

High Energy Physics - Phenomenology · Physics 2016-06-01 Matthew G. Baring , Tathagata Ghosh , Farinaldo S. Queiroz , Kuver Sinha

Dark matter annihilations taking place in nearby subhalos could appear as gamma-ray sources without detectable counterparts at other wavelengths. In this study, we consider the collection of unassociated gamma-ray sources reported by the…

High Energy Astrophysical Phenomena · Physics 2015-12-23 Bridget Bertoni , Dan Hooper , Tim Linden

Dwarf galaxies are widely believed to be among the best targets for indirect dark matter searches using high-energy gamma rays; and indeed gamma-ray emission from these objects has long been a subject of detailed study for ground-based…

High Energy Astrophysical Phenomena · Physics 2012-01-27 A. Viana , M. C. Medina , J. Peñarrubia , P. Brun , J. F. Glicenstein , K. Kosack , E. Moulin , M. Naumann-Godo , B. Peyaud

We present the results of dark matter (DM) searches in a sample of 31 dwarf irregular (dIrr) galaxies within the field of view of the HAWC Observatory. dIrr galaxies are DM dominated objects, which astrophysical gamma-ray emission is…

Dwarf spheroidal galaxies are dark matter dominated systems, and as such, ideal for indirect dark matter searches. If dark matter decays into high-energy photons in the dwarf galaxies, they will be a good target for current and future…

Possible indirect detection of neutralino, through its gamma-ray annihilation product, by the forthcoming GLAST satellite from our galactic halo, M31, M87 and the dwarf galaxies Draco and Sagittarius is studied. Gamma-ray fluxes are…

Astrophysics · Physics 2009-11-10 Sebastien Peirani , Roya Mohayaee , Jose A. de Freitas Pacheco

The annihilations of WIMPs produce high energy gamma-rays in the final state. These high energy gamma-rays may be detected by IACTs such as the H.E.S.S. array of Imaging Atmospheric Cherenkov telescopes. Besides the popular targets such as…

Astrophysics · Physics 2012-08-27 H. E. S. S. Collaboration , : , E. Moulin