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Future dedicated radio interferometers, including HERA and SKA, are very promising tools that aim to study the epoch of reionization and beyond via measurements of the 21 cm signal from neutral hydrogen. Dark matter (DM) annihilations into…

Cosmology and Nongalactic Astrophysics · Physics 2016-08-17 Laura Lopez-Honorez , Olga Mena , Ángeles Moliné , Sergio Palomares-Ruiz , Aaron C. Vincent

Several interesting Dark Matter (DM) models invoke a dark sector leading to two types of relic particles, possibly interacting with each other: non-relativistic DM, and relativistic Dark Radiation (DR). These models have interesting…

Cosmology and Nongalactic Astrophysics · Physics 2019-11-06 Maria Archidiacono , Deanna C. Hooper , Riccardo Murgia , Sebastian Bohr , Julien Lesgourgues , Matteo Viel

We search for evidence of dark matter (DM) annihilation in the isotropic gamma-ray background (IGRB) measured with 50 months of Fermi Large Area Telescope (LAT) observations. An improved theoretical description of the cosmological DM…

Cosmology and Nongalactic Astrophysics · Physics 2019-11-20 The Fermi LAT Collaboration , M. Ackermann , M. Ajello , A. Albert , L. Baldini , G. Barbiellini , D. Bastieri , K. Bechtol , R. Bellazzini , E. Bissaldi , E. D. Bloom , R. Bonino , J. Bregeon , 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 , G. Chiaro , 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 , S. W. Digel , P. S. Drell , A. Drlica-Wagner , C. Favuzzi , E. C. Ferrara , A. Franckowiak , Y. Fukazawa , S. Funk , P. Fusco , F. Gargano , D. Gasparrini , N. Giglietto , F. Giordano , M. Giroletti , G. Godfrey , S. Guiriec , M. Gustafsson , J. W. Hewitt , X. Hou , T. Kamae , M. Kuss , S. Larsson , L. Latronico , F. Longo , F. Loparco , M. N. Lovellette , P. Lubrano , D. Malyshev , F. Massaro , M. Mayer , M. N. Mazziotta , P. F. Michelson , W. Mitthumsiri , T. Mizuno , M. E. Monzani , A. Morselli , I. V. Moskalenko , S. Murgia , M. Negro , R. Nemmen , E. Nuss , T. Ohsugi , M. Orienti , E. Orlando , J. F. Ormes , D. Paneque , J. S. Perkins , M. Pesce-Rollins , F. Piron , G. Pivato , S. Raino , R. Rando , M. Razzano , A. Reimer , O. Reimer , M. Sanchez-Conde , A. Schulz , C. Sgro , E. J. Siskind , G. Spandre , P. Spinelli , A. W. Strong , D. J. Suson , H. Tajima , H. Takahashi , J. G. Thayer , J. B. Thayer , L. Tibaldo , M. Tinivella , D. F. Torres , E. Troja , Y. Uchiyama , G. Vianello , M. Werner , B. L. Winer , K. S. Wood , M. Wood , G. Zaharijas

Dark matter pair production at high energy colliders may leave observable signatures in the energy and momentum spectra of the objects recoiling against the dark matter. We discuss signatures of Dark Matter in the jets + missing energy and…

High Energy Physics - Phenomenology · Physics 2015-03-19 Joachim Kopp

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

We investigate an extension of the $\Lambda$CDM model where the dark matter (DM) is coupled to photons, inducing a nonconservation of the numbers of particles for both species, where the DM particles are allowed to dilute throughout the…

Cosmology and Nongalactic Astrophysics · Physics 2018-08-21 Suresh Kumar , Rafael C. Nunes , Santosh Kumar Yadav

Dark matter self-annihilation holds promise as one of the most robust mechanisms for the identification of the particle responsible for the Universe's missing mass. In this work, I examine the evolution of the dark matter annihilation power…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-17 Katherine J. Mack

We present a general, model-independent formalism for determining bounds on the production of photons in dwarf spheroidal galaxies via dark matter annihilation, applicable to any set of assumptions about dark matter particle physics or…

High Energy Physics - Phenomenology · Physics 2018-05-28 Kimberly K. Boddy , Jason Kumar , Danny Marfatia , Pearl Sandick

In a recent work [Phys. Rev. D 98, 043521 (2018)], we have investigated a dark matter (DM)-photon coupling model in which the DM decays into photons in the presence of dark energy (DE) with the constant equation of state (EoS) parameter.…

Cosmology and Nongalactic Astrophysics · Physics 2019-09-30 Santosh Kumar Yadav

We extend the halo-independent method of Fox, Liu, and Weiner to include energy resolution and efficiency with arbitrary energy dependence, making it more suitable for experiments to use in presenting their results. Then we compare…

High Energy Physics - Phenomenology · Physics 2015-06-04 Paolo Gondolo , Graciela B. Gelmini

An annihilation signal of dark matter is searched for from the central region of the Milky Way. Data acquired in dedicated ON/OFF observations of the Galactic center region with H.E.S.S. are analyzed for this purpose. No significant signal…

High Energy Astrophysical Phenomena · Physics 2016-08-07 HESS Collaboration , A. Abramowski , F. Aharonian , F. Ait Benkhali , A. G. Akhperjanian , E. O. Angüner , M. Backes , S. Balenderan , A. Balzer , A. Barnacka , Y. Becherini , J. Becker Tjus , D. Berge , S. Bernhard , K. Bernlöhr , E. Birsin , J. Biteau , M. Böttcher , C. Boisson , J. Bolmont , P. Bordas , J. Bregeon , F. Brun , P. Brun , M. Bryan , T. Bulik , S. Carrigan , S. Casanova , P. M. Chadwick , N. Chakraborty , R. Chalme-Calvet , R. C. G. Chaves , M. Chrétien , S. Colafrancesco , G. Cologna , J. Conrad , C. Couturier , Y. Cui , I. D. Davids , B. Degrange , C. Deil , P. deWilt , A. Djannati-Ataï , W. Domainko , A. Donath , L. O'C. Drury , G. Dubus , K. Dutson , J. Dyks , M. Dyrda , T. Edwards , K. Egberts , P. Eger , P. Espigat , C. Farnier , S. Fegan , F. Feinstein , M. V. Fernandes , D. Fernandez , A. Fiasson , G. Fontaine , A. Förster , M. Füßling , S. Gabici , M. Gajdus , Y. A. Gallant , T. Garrigoux , G. Giavitto , B. Giebels , J. F. Glicenstein , D. Gottschall , M. -H. Grondin , M. Grudzińska , D. Hadasch , S. Häffner , J. Hahn , J. Harris , G. Heinzelmann , G. Henri , G. Hermann , O. Hervet , A. Hillert , J. A. Hinton , W. Hofmann , P. Hofverberg , M. Holler , D. Horns , A. Ivascenko , A. Jacholkowska , C. Jahn , M. Jamrozy , M. Janiak , F. Jankowsky , I. Jung-Richardt , M. A. Kastendieck , K. Katarzyński , U. Katz , S. Kaufmann , B. Khélifi , M. Kieffer , S. Klepser , D. Klochkov , W. Kluźniak , D. Kolitzus , Nu. Komin , K. Kosack , S. Krakau , F. Krayzel , P. P. Krüger , H. Laffon , G. Lamanna , J. Lefaucheur , V. Lefranc , A. Lemière , M. Lemoine-Goumard , J. -P. Lenain , T. Lohse , A. Lopatin , C. -C. Lu , V. Marandon , A. Marcowith , R. Marx , G. Maurin , N. Maxted , M. Mayer , T. J. L. McComb , J. Méhault , P. J. Meintjes , U. Menzler , M. Meyer , A. M. W. Mitchell , R. Moderski , M. Mohamed , K. Morå , E. Moulin , T. Murach , M. de Naurois , J. Niemiec , S. J. Nolan , L. Oakes , H. Odaka , S. Ohm , B. Opitz , M. Ostrowski , I. Oya , M. Panter , R. D. Parsons , M. Paz Arribas , N. W. Pekeur , G. Pelletier , P. -O. Petrucci , B. Peyaud , S. Pita , H. Poon , G. Pühlhofer , M. Punch , A. Quirrenbach , S. Raab , I. Reichardt , A. Reimer , O. Reimer , M. Renaud , R. de los Reyes , F. Rieger , C. Romoli , S. Rosier-Lees , G. Rowell , B. Rudak , C. B. Rulten , V. Sahakian , D. Salek , D. A. Sanchez , A. Santangelo , R. Schlickeiser , F. Schüssler , A. Schulz , U. Schwanke , S. Schwarzburg , S. Schwemmer , H. Sol , F. Spanier , G. Spengler , F. Spies , Ł. Stawarz , R. Steenkamp , C. Stegmann , F. Stinzing , K. Stycz , I. Sushch , J. -P. Tavernet , T. Tavernier , A. M. Taylor , R. Terrier , M. Tluczykont , C. Trichard , K. Valerius , C. van Eldik , B. van Soelen , G. Vasileiadis , J. Veh , C. Venter , A. Viana , P. Vincent , J. Vink , H. J. Völk , F. Volpe , M. Vorster , T. Vuillaume , S. J. Wagner , P. Wagner , R. M. Wagner , M. Ward , M. Weidinger , Q. Weitzel , R. White , A. Wierzcholska , P. Willmann , A. Wörnlein , D. Wouters , R. Yang , V. Zabalza , D. Zaborov , M. Zacharias , A. A. Zdziarski , A. Zech , H. -S. Zechlin

Gamma-ray observations have long been used to constrain the properties of dark matter (DM), with a strong focus on weakly interacting massive particles annihilating through velocity-independent processes. However, in the absence of…

High Energy Astrophysical Phenomena · Physics 2022-10-11 Thomas Lacroix , Gaétan Facchinetti , Judit Pérez-Romero , Martin Stref , Julien Lavalle , David Maurin , Miguel A. Sánchez-Conde

The current paradigm for dark matter direct detection is to assume that the dark sector is solely composed of a single particle species. In this short paper, we make the observation that dark matter comprising both a light and a heavy…

High Energy Physics - Phenomenology · Physics 2019-01-17 Juan Herrero-Garcia , Andre Scaffidi , Martin White , Anthony G. Williams

We revisit dark matter (DM) capture in celestial objects, including the impact of multiple scattering, and obtain updated constraints on the DM-proton cross section using observations of white dwarfs. Considering a general form for the…

High Energy Physics - Phenomenology · Physics 2024-06-13 Basudeb Dasgupta , Aritra Gupta , Anupam Ray

We study the capture and subsequent annihilation of inelastic dark matter (DM) in the Sun, placing constraints on the DM-nucleon scattering cross section from the null result of the IceCube neutrino telescope. We then compare such…

Cosmology and Nongalactic Astrophysics · Physics 2018-10-31 Riccardo Catena , Fredrik Hellström

The next generation of dark matter (DM) direct detection experiments and neutrino telescopes will probe large swaths of dark matter parameter space. In order to interpret the signals in these experiments, it is necessary to have good models…

High Energy Astrophysical Phenomena · Physics 2009-07-30 Annika H. G. Peter

Annihilating dark matter (DM) models offer promising avenues for future DM detection, in particular via modification of astrophysical signals. However when modelling such potential signals at high redshift the emergence of both dark matter…

Cosmology and Nongalactic Astrophysics · Physics 2017-12-27 Sarah Schon , Katherine J. Mack , Stuart B. Wyithe

We propose a novel and feasible method to detect dark matter (DM) electron interaction via pulsating white dwarfs (WDs) in the central region of globular clusters. Annihilation of the DM particles captured by those WDs can provide…

High Energy Astrophysical Phenomena · Physics 2017-03-30 Jia-Shu Niu , Weikai Zong , Hui-Fang Xue

We search for nuclear recoil signals of dark matter models with a light mediator using data taken from a p-type point-contact germanium detector of the CDEX-10 experiment at the China Jinping Underground Laboratory. The 90% confidence level…

High Energy Physics - Phenomenology · Physics 2025-02-26 Qi-Yuan Nie , Wen-Han Dai , Hao Ma , Qian Yue , Ke-Jun Kang , Yuan-Jing Li
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