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Recent studies of radio data put strong constraints on annihilation cross section for dark matter. In this article, we provide the first analysis of using M33 radio data in constraining annihilating dark matter. The resulting constraints of…

High Energy Astrophysical Phenomena · Physics 2017-10-24 Man Ho Chan

In the past decade, gamma-ray observations and radio observations put strong constraints on the parameters of dark matter annihilation. In this article, we suggest another robust way to constrain the parameters of dark matter annihilation.…

High Energy Astrophysical Phenomena · Physics 2017-08-09 Man Ho Chan

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 indirect searches of dark matter using gamma-ray, radio, and cosmic-ray data have provided some stringent constraints on annihilating dark matter. In this article, we propose a new indirect method to constrain annihilating dark…

High Energy Physics - Phenomenology · Physics 2023-09-12 Man Ho Chan , Chak Man Lee

Recent gamma-ray and radio observations provide stringent constraints for annihilating dark matter. The current $2\sigma$ lower limits of dark matter mass can be constrained to $\sim 100$ GeV for thermal relic annihilation cross section. In…

High Energy Astrophysical Phenomena · Physics 2021-01-05 Man Ho Chan , Chak Man Lee

Recent radio observations have obtained stringent constraints for annihilating dark matter. In this article, we use the radio continuum spectral data of the Large Magellanic Cloud (LMC) to analyze the dark matter annihilation signals. We…

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

Recently, some very tight constraints of annihilating dark matter have been obtained from gamma-ray data of the Milky Way and Milky Way dwarf spheroidal satellite galaxies. In this article, we report that there are two excellent galaxy…

High Energy Astrophysical Phenomena · Physics 2017-11-15 Man Ho Chan , Chung Hei Leung

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

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

The dwarf spheroidal satellite galaxies of the Milky Way are some of the most dark-matter-dominated objects known. Due to their proximity, high dark matter content, and lack of astrophysical backgrounds, dwarf spheroidal galaxies are widely…

High Energy Astrophysical Phenomena · Physics 2019-08-14 Matthew Wood , Brandon Anderson , Alex Drlica-Wagner , Johann Cohen-Tanugi , Jan Conrad

Recent observations suggest that some high-velocity clouds may be confined by massive dark matter halos. In particular, the proximity and proposed dark matter content of the Smith Cloud make it a tempting target for the indirect detection…

High Energy Astrophysical Phenomena · Physics 2014-07-01 Alex Drlica-Wagner , German A. Gomez-Vargas , John W. Hewitt , Tim Linden , Luigi Tibaldo

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. It can also perform diverse indirect searches for dark matter (DM) annihilation…

Although most proposed dark matter candidates are stable, in order for dark matter to be present today, the only requirement is that its lifetime is longer than the age of the Universe, t_U ~ 4 10^17 s. Moreover, the dark matter particle…

Cosmology and Nongalactic Astrophysics · Physics 2010-12-13 Sergio Palomares-Ruiz , Jennifer M. Siegal-Gaskins

In the past decade, the properties of annihilating dark matter models were examined by various kinds of data, including the data of gamma rays, radio waves, X-ray, positrons, electrons, antiprotons and neutrinos. In particular, most of the…

High Energy Astrophysical Phenomena · Physics 2021-01-05 Man Ho Chan , Chak Man Lee , C. -Y. Ng , Chun Sing Leung

The dwarf spheroidal satellite galaxies of the Milky Way are some of the most dark-matter-dominated objects known. Due to their proximity, high dark matter content, and lack of astrophysical backgrounds, dwarf spheroidal galaxies are widely…

High Energy Astrophysical Phenomena · Physics 2014-02-20 LAT Collaboration , M. Ackermann , A. Albert , B. Anderson , L. Baldini , J. Ballet , G. Barbiellini , D. Bastieri , K. Bechtol , R. Bellazzini , E. Bissaldi , E. D. Bloom , E. Bonamente , A. Bouvier , T. J. Brandt , J. Bregeon , M. Brigida , P. Bruel , R. Buehler , S. Buson , G. A. Caliandro , R. A. Cameron , M. Caragiulo , P. A. Caraveo , C. Cecchi , E. Charles , A. Chekhtman , J. Chiang , S. Ciprini , R. Claus , J. Cohen-Tanugi , J. Conrad , F. D'Ammando , A. de Angelis , C. D. Dermer , S. W. Digel , E. do Couto e Silva , P. S. Drell , A. Drlica-Wagner , R. Essig , C. Favuzzi , E. C. Ferrara , A. Franckowiak , Y. Fukazawa , S. Funk , P. Fusco , F. Gargano , D. Gasparrini , N. Giglietto , M. Giroletti , G. Godfrey , G. A. Gomez-Vargas , I. A. Grenier , S. Guiriec , M. Gustafsson , M. Hayashida , E. Hays , J. Hewitt , R. E. Hughes , T. Jogler , T. Kamae , J. Knödlseder , D. Kocevski , M. Kuss , . Larsson , L. Latronico , M. Llena Garde , F. Longo , F. Loparco , M. N. Lovellette , P. Lubrano , G. Martinez , M. Mayer , M. N. Mazziotta , P. F. Michelson , W. Mitthumsiri , T. Mizuno , A. A. Moiseev , M. E. Monzani , A. Morselli , I. V. Moskalenko , S. Murgia , R. Nemmen , E. Nuss , T. Ohsugi , E. Orlando , J. F. Ormes , J. S. Perkins , F. Piron , G. Pivato , T. A. Porter , S. Rainò , R. Rando , M. Razzano , S. Razzaque , A. Reimer , O. Reimer , S. Ritz , M. Sànchez-Conde , N. Sehgal , C. Sgrò , E. J. Siskind , P. Spinelli , L. Strigari , D. J. Suson , H. Tajima , H. Takahashi , J. B. Thayer , L. Tibaldo , M. Tinivella , D. F. Torres , Y. Uchiyama , T. L. Usher , J. Vandenbroucke , G. Vianello , V. Vitale , M. Werner , B. L. Winer , K. S. Wood , M. Wood , G. Zaharijas , S. Zimmer

We present constraints on decaying and annihilating dark matter (DM) in the 4 keV to 10 GeV mass range, using published results from the satellites HEAO-1, INTEGRAL, COMPTEL, EGRET, and the Fermi Gamma-ray Space Telescope. We derive…

High Energy Physics - Phenomenology · Physics 2015-06-17 Rouven Essig , Eric Kuflik , Samuel D. McDermott , Tomer Volansky , Kathryn M. Zurek

Photons produced in the annihilations of dark matter particles can be detected by gamma-ray telescopes; this technique of indirect detection serves as a cornerstone of the upcoming assault on the dark matter paradigm. The main obstacle to…

Cosmology and Nongalactic Astrophysics · Physics 2011-07-08 Eric J. Baxter , Scott Dodelson

Dwarf spheroidal galaxies compose one of the most dark matter dominated classes of objects, making them a set of targets to search for signals of dark matter annihilation. Recent developments in gamma-ray astronomy, most importantly the…

High Energy Astrophysical Phenomena · Physics 2012-11-14 Ilias Cholis , Paolo Salucci

The Milky Way halo is the brightest source of dark matter annihilation on the sky. Indeed, the potential strength of the Galactic dark matter signal can supersede that expected from dwarf galaxies and galaxy groups even in regions away from…

Cosmology and Nongalactic Astrophysics · Physics 2018-12-20 Laura J. Chang , Mariangela Lisanti , Siddharth Mishra-Sharma

Satellite galaxies of the Milky Way are among the most promising targets for dark matter searches in gamma rays. We present a search for dark matter consisting of weakly interacting massive particles, applying a joint likelihood analysis to…

High Energy Astrophysical Phenomena · Physics 2012-08-27 LAT Collaboration , M. Ackermann , M. Ajello , A. Albert , W. B. Atwood , L. Baldini , J. Ballet , G. Barbiellini , D. Bastieri , K. Bechtol , R. Bellazzini , B. Berenji , R. D. Blandford , E. D. Bloom , E. Bonamente , A. W. Borgland , J. Bregeon , M. Brigida , P. Bruel , R. Buehler , T. H. Burnett , S. Buson , G. A. Caliandro , R. A. Cameron , B. Canadas , P. A. Caraveo , J. M. Casandjian , C. Cecchi , E. Charles , A. Chekhtman , J. Chiang , S. Ciprini , R. Claus , J. Cohen-Tanugi , J. Conrad , S. Cutini , A. de Angelis , F. de Palma , C. D. Dermer , S. W. Digel , E. do Couto e Silva , P. S. Drell , A. Drlica-Wagner , L. Falletti , C. Favuzzi , S. J. Fegan , E. C. Ferrara , Y. Fukazawa , S. Funk , P. Fusco , F. Gargano , D. Gasparrini , N. Gehrels , S. Germani , N. Giglietto , F. Giordano , M. Giroletti , T. Glanzman , G. Godfrey , I. A. Grenier , S. Guiriec , M. Gustafsson , D. Hadasch , M. Hayashida , E. Hays , R. E. Hughes , T. E. Jeltema , G. Johannesson , R. P. Johnson , A. S. Johnson , T. Kamae , H. Katagiri , J. Kataoka , 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 , G. M. Madejski , M. N. Mazziotta , J. E. McEnery , J. Mehault , P. F. Michelson , W. Mitthumsiri , T. Mizuno , C. Monte , M. E. Monzani , A. Morselli , I. V. Moskalenko , S. Murgia , M. Naumann-Godo , J. P. Norris , E. Nuss , T. Ohsugi , A. Okumura , N. Omodei , E. Orlando , J. F. Ormes , M. Ozaki , D. Paneque , D. Parent , M. Pesce-Rollins , M. Pierbattista , F. Piron , G. Pivato , T. A. Porter , S. Profumo , S. Raino , M. Razzano , A. Reimer , O. Reimer , S. Ritz , M. Roth , H. F. -W. Sadrozinski , C. Sbarra , J. D. Scargle , T. L. Schalk , C. Sgro , E. J. Siskind , G. Spandre , P. Spinelli , L. Strigari , D. J. Suson , H. Tajima , H. Takahashi , T. Tanaka , J. G. Thayer , J. B. Thayer , D. J. Thompson , L. Tibaldo , M. Tinivella , D. F. Torres , E. Troja , Y. Uchiyama , J. Vandenbroucke , V. Vasileiou , G. Vianello , V. Vitale , A. P. Waite , P. Wang , B. L. Winer , K. S. Wood , M. Wood , Z. Yang , S. Zimmer , M. Kaplinghat , G. D. Martinez
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