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We derive constraints on dark matter (DM) annihilation cross section and decay lifetime from cross-correlation analyses of the data from Fermi-LAT and weak lensing surveys that cover a wide area of $\sim660$ squared degrees in total. We…

Cosmology and Nongalactic Astrophysics · Physics 2016-09-29 Masato Shirasaki , Oscar Macias , Shunsaku Horiuchi , Satoshi Shirai , Naoki Yoshida

We conduct an indirect dark matter (DM) search in the Galactic Center, focusing on a square region within $\pm 9^{\circ}$ in Galactic longitude and latutide, using 2,865 days of data ($\sim$8 years) from the High-Altitude Water Cherenkov…

High Energy Astrophysical Phenomena · Physics 2026-03-09 R. Alfaro , C. Alvarez , A. Andrés , E. Anita-Rangel , M. Araya , J. C. Arteaga-Velázquez , D. Avila Rojas , H. A. Ayala Solares , R. Babu , P. Bangale , A. Bernal , K. S. Caballero-Mora , T. Capistrán , A. Carramiñana , F. Carreón , S. Casanova , A. L. Colmenero-Cesar , U. Cotti , J. Cotzomi , S. Coutiño de León , E. De la Fuente , D. Depaoli , P. Desiati , N. Di Lalla , R. Diaz Hernandez , B. L. Dingus , M. A. DuVernois , J. C. Díaz-Vélez , K. Engel , T. Ergin , C. Espinoza , K. Fang , N. Fraija , S. Fraija , J. A. Garcéa-González , F. Garfias , N. Ghosh , H. Goksu , A. Gonzalez Muñoz , M. M. González , J. A. González , J. A. Goodman , S. Groetsch , J. Gyeong , J. P. Harding , S. Hernández-Cadena , I. Herzog , J. Hinton , D. Huang , F. Hueyotl-Zahuantitla , P. Hüntemeyer , A. Iriarte , S. Kaufmann , D. Kieda , A. Lara , K. Leavitt , W. H. Lee , J. Lee , H. León Vargas , J. T. Linnemann , A. L. Longinotti , G. Luis-Raya , K. Malone , O. Martinez , J. Martínez-Castro , H. Martínez-Huerta , J. A. Matthews , J. McEnery , P. Miranda-Romagnoli , P. E. Mirón-Enriquez , J. A. Montes , J. A. Morales-Soto , E. Moreno , M. Mostafá , M. Najafi , A. Nayerhoda , L. Nellen , M. U. Nisa , R. Noriega-Papaqui , N. Omodei , M. Osorio-Archila , E. Ponce , Y. Pérez Araujo , E. G. Pérez-Pérez , C. D. Rho , A. Rodriguez Parra , D. Rosa-González , M. Roth , H. Salazar , D. Salazar-Gallegos , A. Sandoval , M. Schneider , J. Serna-Franco , A. J. Smith , Y. Son , R. W. Springer , O. Tibolla , K. Tollefson , I. Torres , R. Torres-Escobedo , R. Turner , F. Ureña-Mena , E. Varela , L. Villaseñor , X. Wang , Z. Wang , I. J. Watson , H. Wu , S. Yu , S. Yun-Cárcamo , H. Zhou , C. de León

The Fermi-LAT collaboration has studied the gamma-ray emission from a stacked population of dwarf spheroidal galaxies and used this information to set constraints on the dark matter annihilation cross section. Interestingly, their analysis…

High Energy Astrophysical Phenomena · Physics 2015-03-11 Eric Carlson , Dan Hooper , Tim Linden

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

Galaxy clusters are the largest gravitationally bound objects in the universe and may be suitable targets for indirect dark matter searches. With 85 months of Fermi-LAT Pass 8 publicly available data, we analyze the gamma-ray emission in…

High Energy Astrophysical Phenomena · Physics 2016-05-27 Yun-Feng Liang , Zhao-Qiang Shen , Xiang Li , Yi-Zhong Fan , Xiaoyuan Huang , Shi-Jun Lei , Lei Feng , En-Wei Liang , Jin Chang

The recently published GALFA-HI Compact Cloud Catalogue lists 20 neutral hydrogen clouds that might pinpoint previously undiscovered high-latitude dwarf galaxies. Detection of an associated gamma-ray dark matter signal could provide a route…

High Energy Astrophysical Phenomena · Physics 2015-06-15 N. Mirabal

We present quantitative predictions for the detectability of individual Galactic dark matter subhalos in gamma-rays from dark matter pair annihilations in their centers. Our method is based on a hybrid approach, employing the highest…

Astrophysics · Physics 2009-11-13 Michael Kuhlen , Jürg Diemand , Piero Madau

The Fornax galaxy cluster was observed with the High Energy Stereoscopic System (H.E.S.S.) for a total live time of 14.5 hours, searching for very-high-energy (VHE, E>100 GeV) gamma-rays from dark matter (DM) annihilation. No significant…

High Energy Astrophysical Phenomena · Physics 2013-07-31 HESS Collaboration , A. Abramowski , F. Acero , F. Aharonian , A. G. Akhperjanian , G. Anton , A. Balzer , A. Barnacka , U. Barres de Almeida , Y. Becherini , J. Becker , B. Behera , K. Bernlöhr , E. Birsin , J. Biteau , A. Bochow , C. Boisson , J. Bolmont , P. Bordas , J. Brucker , F. Brun , P. Brun , T. Bulik , I. Büsching , S. Carrigan , S. Casanova , M. Cerruti , P. M. Chadwick , A. Charbonnier , R. C. G. Chaves , A. Cheesebrough , A. C. Clapson , G. Coignet , G. Cologna , J. Conrad , M. Dalton , M. K. Daniel , I. D. Davids , B. Degrange , C. Deil , H. J. Dickinson , A. Djannati-Ataï , W. Domainko , L. O'C. Drury , G. Dubus , K. Dutson , J. Dyks , M. Dyrda , K. Egberts , P. Eger , P. Espigat , L. Fallon , C. Farnier , S. Fegan , F. Feinstein , M. V. Fernandes , A. Fiasson , G. Fontaine , A. Förster , M. Füßling , Y. A. Gallant , H. Gast , L. Gérard , D. Gerbig , B. Giebels , J. F. Glicenstein , B. Glück , P. Goret , D. Göring , S. Häffner , J. D. Hague , D. Hampf , M. Hauser , S. Heinz , G. Heinzelmann , G. Henri , G. Hermann , J. A. Hinton , A. Hoffmann , W. Hofmann , P. Hofverberg , M. Holler , D. Horns , A. Jacholkowska , O. C. de Jager , C. Jahn , M. Jamrozy , I. Jung , M. A. Kastendieck , K. Katarzyński , U. Katz , S. Kaufmann , D. Keogh , D. Khangulyan , B. Khélifi , D. Klochkov , W. Kluźniak , T. Kneiske , Nu. Komin , K. Kosack , R. Kossakowski , H. Laffon , G. Lamanna , D. Lennarz , T. Lohse , A. Lopatin , C. -C. Lu , V. Marandon , A. Marcowith , J. Masbou , D. Maurin , N. Maxted , M. Mayer , T. J. L. McComb , M. C. Medina , J. Méhault , R. Moderski , E. Moulin , C. L. Naumann , M. Naumann-Godo , M. de Naurois , D. Nedbal , D. Nekrassov , N. Nguyen , B. Nicholas , J. Niemiec , S. J. Nolan , S. Ohm , E. de Oña Wilhelmi , B. Opitz , M. Ostrowski , I. Oya , M. Panter , M. Paz Arribas , G. Pedaletti1 , G. Pelletier , P. -O. Petrucci , S. Pita , G. Pühlhofer , M. Punch , A. Quirrenbach , M. Raue , S. M. Rayner , A. Reimer , O. Reimer , M. Renaud , R. de los Reyes , F. Rieger , J. Ripken , L. Rob , S. Rosier-Lees , G. Rowell , B. Rudak , C. B. Rulten , J. Ruppel , V. Sahakian , D. A. Sanchez , A. Santangelo , R. Schlickeiser , F. M. Schöck , A. Schulz , U. Schwanke , S. Schwarzburg , S. Schwemmer , F. Sheidaei , J. L. Skilton , H. Sol , G. Spengler , Ł. Stawarz , R. Steenkamp , C. Stegmann , F. Stinzing , K. Stycz , I. Sushch , A. Szostek , J. -P. Tavernet , R. Terrier , M. Tluczykont , K. Valerius , C. van Eldik , G. Vasileiadis , C. Venter , J. P. Vialle , A. Viana , P. Vincent , H. J. Völk , F. Volpe , S. Vorobiov , M. Vorster , S. J. Wagner , M. Ward , R. White , A. Wierzcholska , M. Zacharias , A. Zajczyk , A. A. Zdziarski , A. Zech , H. -S. Zechlin

The diffuse galactic EGRET gamma ray data show a clear excess for energies above 1 GeV in comparison with the expectations from conventional galactic models. The excess is seen with the same spectrum in all sky directions, as expected for…

High Energy Physics - Phenomenology · Physics 2009-11-10 W. de Boer

We study the gamma rays observed by the Fermi Gamma Ray Space Telescope from the direction of the Galactic Center and find that their angular distribution and energy spectrum are well described by a dark matter annihilation scenario. In…

High Energy Physics - Phenomenology · Physics 2009-11-11 Lisa Goodenough , Dan Hooper

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

Recent gamma-ray observations and radio observations put strong constraints on the parameters of dark matter annihilation. In this article, we derive new constraints for six standard model annihilation channels by using the recent radio…

High Energy Astrophysical Phenomena · Physics 2016-08-03 Man Ho Chan

Recent gamma-ray and radio studies have obtained some stringent constraints on annihilating dark matter properties. However, only a few studies have focussed on using X-ray data to constrain annihilating dark matter. In this article, we…

Astrophysics of Galaxies · Physics 2022-08-15 Man Ho Chan , Chak Man Lee

If dark matter consists of weakly interacting massive particles (WIMPs), dark matter subhalos in the Milky Way could be detectable as gamma-ray point sources due to WIMP annihilation. In this work, we perform an updated study of the…

High Energy Astrophysical Phenomena · Physics 2016-05-25 Djoeke Schoonenberg , Jennifer Gaskins , Gianfranco Bertone , Jürg Diemand

It has been proposed that during the formation of the first generation stars there might be a "dark star" phase in which the power of the star comes from dark matter annihilation. The adiabatic contraction process to form the dark star…

Cosmology and Nongalactic Astrophysics · Physics 2011-04-20 Qiang Yuan , Bin Yue , Bing Zhang , Xuelei Chen

Annihilation of dark matter can result in the production of stable Standard Model particles including electrons and positrons that, in the presence of magnetic fields, lose energy via synchrotron radiation, observable as radio emission.…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Emma Storm , Tesla E. Jeltema , Stefano Profumo , Lawrence Rudnick

We present an updated analysis of the gamma-ray flux from the directions of classical dwarf spheroidal galaxies, deriving new constraints on WIMP dark matter (DM) annihilation using a decade of Fermi-LAT data. Among the major novelties, we…

High Energy Astrophysical Phenomena · Physics 2021-02-15 Alexandre Alvarez , Francesca Calore , Anna Genina , Justin I. Read , Pasquale D. Serpico , Bryan Zaldivar

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

The nature of dark matter is a longstanding enigma of physics; it may consist of particles beyond the Standard Model that are still elusive to experiments. Among indirect search techniques, which look for stable products from the…

Galaxy clusters are promising targets for indirect detection of dark matter thanks to the large dark matter content. Using 14 years of Fermi-LAT data from seven nearby galaxy clusters, we obtain constraints on the lifetime of decaying very…

High Energy Astrophysical Phenomena · Physics 2024-05-17 Deheng Song , Kohta Murase , Ali Kheirandish