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If the dark matter in the Universe is made of weakly self-interacting particles, they may self-annihilate and emit gamma-rays. We use high resolution numerical simulations to estimate directly the annihilation flux from the central regions…

Astrophysics · Physics 2009-09-25 Felix Stoehr , Simon D. M. White , Volker Springel , Giuseppe Tormen , Naoki Yoshida

We review the annihilation of dark matter into neutrinos over a range of dark matter masses from MeV$/c^2$ to ZeV$/c^2$. Thermally-produced models of dark matter are expected to self-annihilate to standard model products. As no such signal…

High Energy Physics - Phenomenology · Physics 2021-09-22 Carlos A. Argüelles , Alejandro Diaz , Ali Kheirandish , Andrés Olivares-Del-Campo , Ibrahim Safa , Aaron C. Vincent

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

Upcoming $\gamma$-ray satellites will search for Dark Matter annihilations in Milky Way substructures (or 'clumps'). The prospects for detecting these objects strongly depend on the assumptions made on the distribution of Dark Matter in…

Astrophysics · Physics 2008-11-26 L. Pieri , G. Bertone , E Branchini

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 consider the indirect detection of dark matter that is captured in the Sun and subsequently annihilates to long-lived dark mediators. If these mediators escape the Sun before decaying, they can produce striking gamma ray signals, either…

High Energy Physics - Phenomenology · Physics 2021-09-21 Nicole F. Bell , James B. Dent , Isaac W. Sanderson

We have performed an analysis of the diffuse gamma-ray emission with the Fermi Large Area Telescope in the Milky Way Halo region searching for a signal from dark matter annihilation or decay. In the absence of a robust dark matter signal,…

Cosmology and Nongalactic Astrophysics · Physics 2013-01-15 LAT collaboration , M. Ackermann , M. Ajello , W. B. Atwood , L. Baldini , G. Barbiellini , D. Bastieri , K. Bechtol , R. Bellazzini , R. D. Blandford , E. D. Bloom , E. Bonamente , A. W. Borgland , E. Bottacini , T. J. Brandt , J. Bregeon , M. Brigida , P. Bruel , R. Buehler , S. Buson , G. A. Caliandro , R. A. Cameron , P. A. Caraveo , J. M. Casandjian , C. Cecchi , E. Charles , A. Chekhtman , J. Chiang , S. Ciprini , R. Claus , J. Cohen-Tanugi , J. Conrad , A. Cuoco , S. Cutini , F. D'Ammando , A. de Angelis , F. de Palma , C. D. Dermer , E. do Couto e Silva , P. S. Drell , A. Drlica-Wagner , L. Falletti , C. Favuzzi , S. J. Fegan , W. B. Focke , Y. Fukazawa , S. Funk , P. Fusco , F. Gargano , D. Gasparrini , S. Germani , N. Giglietto , F. Giordano , M. Giroletti , T. Glanzman , G. Godfrey , I. A. Grenier , S. Guiriec , M. Gustafsson , D. Hadasch , M. Hayashida , D. Horan , R. E. Hughes , M. S. Jackson , T. Jogler , G. Jóhannesson , A. S. Johnson , T. Kamae , J. Knödlseder , M. Kuss , J. Lande , L. Latronico , A. M. Lionetto , M. Llena Garde , F. Longo , F. Loparco , B. Lott , M. N. Lovellette , P. Lubrano , M. N. Mazziotta , J. E. McEnery , J. Mehault , P. F. Michelson , W. Mitthumsiri , T. Mizuno , A. A. Moiseev , C. Monte , M. E. Monzani , A. Morselli , I. V. Moskalenko , S. Murgia , M. Naumann-Godo , J. P. Norris , E. Nuss , T. Ohsugi , M. Orienti , E. Orlando , J. F. Ormes , D. Paneque , J. H. Panetta , M. Pesce-Rollins , M. Pierbattista , F. Piron , G. Pivato , H. Poon , S. Rainò , R. Rando , M. Razzano , S. Razzaque , A. Reimer , O. Reimer , C. Romoli , C. Sbarra , J. D. Scargle , C. Sgrò , E. J. Siskind , G. Spandre , P. Spinelli , Łukasz Stawarz , A. W. Strong , D. J. Suson , H. Tajima , H. Takahashi , T. Tanaka , J. G. Thayer , J. B. Thayer , L. Tibaldo , M. Tinivella , G. Tosti , E. Troja , T. L. Usher , J. Vandenbroucke , V. Vasileiou , G. Vianello , V. Vitale , A. P. Waite , E. Wallace , K. S. Wood , M. Wood , Z. Yang , G. Zaharijas , S. Zimmer

Low luminosity dwarf galaxies provide stringent constraints on the nature of dark matter. Establishing these constraints depends on precise kinematic measurements of individual stars. In this overview for non-specialists, we describe…

Cosmology and Nongalactic Astrophysics · Physics 2021-12-10 J. D. Simon , M. Geha

The apparent gamma-ray excess in the Galactic center region and inner Galaxy has attracted considerable interest, notably because both its spectrum and radial distribution are consistent with an interpretation in terms of annihilating dark…

High Energy Astrophysical Phenomena · Physics 2014-12-03 Torsten Bringmann , Martin Vollmann , Christoph Weniger

A brief review of the indirect detection signatures of dark matter is given. In particular, detection methods of dark matter particle annihilation to antimatter and gamma-rays are reviewed. With the GLAST satellite soon to be launched, a…

Astrophysics · Physics 2008-11-26 Lars Bergstrom

For nearly a century, more mass has been measured in galaxies than is contained in the luminous stars and gas. Through continual advances in observations and theory, it has become clear that the dark matter in galaxies is not comprised of…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 Louis E. Strigari

Gamma-ray searches for dark matter annihilation and decay in dwarf galaxies rely on an understanding of the dark matter density profiles of these systems. Conversely, uncertainties in these density profiles propagate into the derived…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-12 Alex Geringer-Sameth , Savvas M. Koushiappas , Matthew Walker

Secluded dark matter is one of the most popular dark matter models, where dark matter annihilations go into particles that belong to a dark sector. An interesting way to probe such models is via indirect detection. In particular, gamma-ray…

High Energy Physics - Phenomenology · Physics 2019-09-04 Clarissa Siqueira

At present, dwarf spheroidal galaxies satellites of the Milky Way may represent the best astrophysical objects for dark matter (DM) searches with gamma-ray telescopes. They present the highest mass-to-light ratios known in the Universe.…

Cosmology and Nongalactic Astrophysics · Physics 2019-08-13 Miguel A. Sanchez-Conde

The High Altitude Water Cherenkov (HAWC) gamma-ray observatory is a wide field-of-view observatory sensitive to 500 GeV - 100 TeV gamma rays and cosmic rays. With its observations over 2/3 of the sky every day, the HAWC observatory is…

High Energy Astrophysical Phenomena · Physics 2018-03-14 A. U. Abeysekara , A. M. Albert , R. Alfaro , C. Alvarez , J. D. Álvarez , R. Arceo , J. C. Arteaga-Velázquez , D. Avila Rojas , H. A. Ayala Solares , A. Becerril , E. Belmont-Moreno , S. Y. BenZvi , A. Bernal , C. Brisbois , K. S. Caballero-Mora , T. Capistrán , A. Carramiñana , S. Casanova , M. Castillo , U. Cotti , J. Cotzomi , C. De León , E. De la Fuente , R. Diaz Hernandez , B. L. Dingus , M. A. DuVernois , J. C. Díaz-Vélez , K. Engel , O. Enríquez-Rivera , D. W. Fiorino , H. Fleischhack , N. Fraija , J. A. García-González , F. Garfias , A. González Muñoz , M. M. González , J. A. Goodman , Z. Hampel-Arias , J. P. Harding , S. Hernandez , A. Hernandez-Almada , F. Hueyotl-Zahuantitla , P. Hüntemeyer , A. Iriarte , A. Jardin-Blicq , V. Joshi , S. Kaufmann , R. J. Lauer , W. H. Lee , D. Lennarz , H. León Vargas , J. T. Linnemann , A. L. Longinotti , G. Luis-Raya , R. Luna-García , R. López-Coto , K. Malone , S. S. Marinelli , O. Martinez , I. Martinez-Castellanos , J. Martínez-Castro , J. A. Matthews , P. Miranda-Romagnoli , E. Moreno , M. Mostafá , L. Nellen , M. Newbold , M. U. Nisa , R. Noriega-Papaqui , R. Pelayo , J. Pretz , E. G. Pérez-Pérez , Z. Ren , C. D. Rho , N. L. Rodd , D. Rosa-González , M. Rosenberg , E. Ruiz-Velasco , B. R. Safdi , H. Salazar , F. Salesa Greus , A. Sandoval , M. Schneider , G. Sinnis , A. J. Smith , R. W. Springer , P. Surajbali , I. Taboada , O. Tibolla , K. Tollefson , I. Torres , T. N. Ukwatta , G. Vianello , L. Villaseñor , T. Weisgarber , S. Westerhoff , I. G. Wisher , J. Wood , T. Yapici , G. B. Yodh , P. W. Younk , A. Zepeda , H. Zhou

Dark matter (DM) particle annihilation or decay can produce monochromatic $\gamma$-rays readily distinguishable from astrophysical sources. $\gamma$-ray line limits from 30 GeV to 200 GeV obtained from 11 months of Fermi Large Area Space…

High Energy Astrophysical Phenomena · Physics 2012-05-15 The Fermi LAT Collaboration , A. A. Abdo , M. Ackermann , M. Ajello , W. B. Atwood , L. Baldini , J. Ballet , G. Barbiellini , D. Bastieri , K. Bechtol , R. Bellazzini , B. Berenji , E. D. Bloom , E. Bonamente , A. W. Borgland , A. Bouvier , J. Bregeon , A. Brez , M. Brigida , P. Bruel , T. H. Burnett , S. Buson , G. A. Caliandro , R. A. Cameron , P. A. Caraveo , S. Carrigan , J. M. Casandjian , C. Cecchi , O. C. Elik , A. Chekhtman , J. Chiang , S. Ciprini , R. Claus , J. Cohen-Tanugi , J. Conrad , C. D. Dermer , A. de Angelis , F. de Palma , S. W. Digel , E. do Couto e Silva , P. S. Drell , A. Drlica-Wagner , R. Dubois , D. Dumora , Y. Edmonds , R. Essig , C. Farnier , C. Favuzzi , S. J. Fegan , W. B. Focke , P. Fortin , M. Frailis , Y. Fukazawa , S. Funk , P. Fusco , F. Gargano , D. Gasparrini , N. Gehrels , S. Germani , N. Giglietto , F. Giordano , T. Glanzman , G. Godfrey , I. A. Grenier , J. E. Grove , L. Guillemot , S. Guiriec , M. Gustafsson , D. Hadasch , A. K. Harding , D. Horan , R. E. Hughes , M. S. Jackson , G. J . ohannesson , A. S. Johnson , R. P. Johnson , W. N. Johnson , T. Kamae , H. Katagiri , J. Kataoka , N. Kawai , M. Kerr , J. Kno . dlseder , M. Kuss , J. Lande , L. Latronico , M. Llena Garde , F. Longo , F. Loparco , B. Lott , M. N. Lovellette , P. Lubrano , A. Makeev , M. N. Mazziotta , J. E. McEnery , C. Meurer , P. F. Michelson , W. Mitthumsiri , T. Mizuno , A. A. Moiseev , C. Monte , M. E. Monzani , A. Morselli , I. V. Moskalenko , S. Murgia , P. L. Nolan , J. P. Norris , E. Nuss , T. Ohsugi , N. Omodei , E. Orlando , J. F. Ormes , M. Ozaki , D. Paneque , J. H. Panetta , D. Parent , V. Pelassa , M. Pepe , M. Pesce-Rollins , F. Piron , S. Rainó , R. Rando , M. Razzano , A. Reimer , O. Reimer , T. Reposeur , J. Ripken , S. Ritz , A. Y. Rodriguez , M. Roth , H. F. -W. Sadrozinski , A. Sander , P. M. Saz Parkinson , J. D. Scargle , T. L. Schalk , A. Sellerholm , C. Sgró , E. J. Siskind , D. A. Smith , P. D. Smith , G. Spandre , P. Spinelli , J. -L. Starck , M. S. Strickman , D. J. Suson , H. Tajima , H. Takahashi , T. Tanaka , J. B. Thayer , J. G. Thayer , L. Tibaldo , D. F. Torres , Y. Uchiyama , T. L. Usher , V. Vasileiou , N. Vilchez , V. Vitale , A. P. Waite , P. Wang , B. L. Winer , K. S. Wood , T. Ylinen , M. Ziegler

Local dwarf spheroidal galaxies (dSphs) are nearby dark-matter dominated systems, making them excellent targets for searching for gamma rays from particle dark matter interactions. If dark matter annihilates or decays directly into two…

High Energy Astrophysical Phenomena · Physics 2020-05-06 The HAWC Collaboration

We consider a light scalar dark matter candidate with mass in the GeV range whose $p$-wave annihilation is enhanced through a Breit-Wigner resonance. The annihilation actually proceeds in the $s$-channel via a dark photon mediator whose…

High Energy Physics - Phenomenology · Physics 2024-08-02 Genevieve Bélanger , Sreemanti Chakraborti , Yoann Génolini , Pierre Salati

We demonstrate that dark matter heating of gas clouds hundreds of parsecs from the Milky Way Galactic center provides a powerful new test of dark matter interactions. To illustrate, we set a leading bound on nucleon scattering for 10-100…

High Energy Physics - Phenomenology · Physics 2018-10-03 Amit Bhoonah , Joseph Bramante , Fatemeh Elahi , Sarah Schon

Celestial objects such as stars and planets might be able to capture a large amount of dark matter particles through dark matter-nucleon scattering. Many previous studies have considered different celestial objects such as the Sun and the…

High Energy Physics - Phenomenology · Physics 2022-03-30 Man Ho Chan , Chak Man Lee