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Capture and annihilation of WIMP-like dark matter in red giant stars can lead to faster-than-expected ignition of the helium core, and thus a lower tip of the red giant branch (TRGB) luminosity. We use Gaia data to place constraints on the…

High Energy Physics - Phenomenology · Physics 2024-11-07 Haozhi Hong , Aaron C. Vincent

We examine the constraints on final state radiation from Weakly Interacting Massive Particle (WIMP) dark matter candidates annihilating into various standard model final states, as imposed by the measurement of the isotropic diffuse…

High Energy Astrophysical Phenomena · Physics 2014-07-16 Kevork N. Abazajian , Prateek Agrawal , Zackaria Chacko , Can Kilic

We study diffuse gamma-ray emission at intermediate Galactic latitudes measured by the Fermi Large Area Telescope with the aim of searching for a signal from dark matter annihilation or decay. In the absence of a robust dark matter signal,…

High Energy Astrophysical Phenomena · Physics 2013-04-10 G. Zaharijas , J. Conrad , A. Cuoco , Z. Yang

We compute the bounds on the dark matter (DM) annihilation cross section using the most recent Cosmic Microwave Background measurements from WMAP9, SPT'11 and ACT'10. We consider DM with mass in the MeV-TeV range annihilating 100% into…

Cosmology and Nongalactic Astrophysics · Physics 2013-09-13 Laura Lopez-Honorez , Olga Mena , Sergio Palomares-Ruiz , Aaron C. Vincent

We analyze strongly lensed images in 8 galaxy clusters to measure their dark matter density profiles in the radial region between 10 kpc and 150 kpc, and use this to constrain the self-interaction cross section of dark matter (DM)…

Cosmology and Nongalactic Astrophysics · Physics 2021-11-24 Kevin E. Andrade , Jackson Fuson , Sophia Gad-Nasr , Demao Kong , Quinn Minor , M. Grant Roberts , Manoj Kaplinghat

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

We study the imprint of dark matter (DM) annihilation on the global 21 cm signal from the Dark Ages to Cosmic Reionization. Motivated by recent observations, we focus on three DM candidates: (i) a 10 GeV Bino-like neutralino (ii) a 200 GeV…

Cosmology and Nongalactic Astrophysics · Physics 2013-04-16 Marcos Valdés , Carmelo Evoli , Andrei Mesinger , Andrea Ferrara , Naoki Yoshida

Dark matter (DM) annihilation could in principle contribute to the diffuse cosmic gamma-ray back- ground (CGB). While with standard assumptions for cosmological and particle physics parameters this contribution is expected to be rather…

Astrophysics · Physics 2010-04-30 Marco Taoso , Shin'ichiro Ando , Gianfranco Bertone , Stefano Profumo

In the cosmological paradigm, cold dark matter (DM) dominates the mass content of the Universe and is present at every scale. Candidates for DM include many extensions of the standard model, such as weakly interacting massive particles…

High Energy Astrophysical Phenomena · Physics 2019-08-13 Benjamin Zitzer

Dwarf spheroidal galaxies are known to be excellent targets for the detection of annihilating dark matter. We present new limits on the annihilation cross section of Weakly Interacting Massive Particles (WIMPs) based on the joint analysis…

Cosmology and Nongalactic Astrophysics · Physics 2012-03-20 Alex Geringer-Sameth , Savvas M. Koushiappas

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

Annihilation of dark matter particles in cosmological halos (including a halo of the Milky Way) contributes to the diffuse gamma-ray background (DGRB). As this contribution will appear anisotropic in the sky, one can use the angular power…

Cosmology and Nongalactic Astrophysics · Physics 2013-07-31 Shin'ichiro Ando , Eiichiro Komatsu

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 nature of dark matter is increasingly constrained by cosmological data. In this paper, we examine the implications of the Cosmic Microwave Background anisotropy limits on the density of cold dark matter under different theoretical…

Astrophysics · Physics 2009-11-07 A. Melchiorri , J. Silk

We present a detailed analysis of the radio synchrotron emission induced by WIMP dark matter annihilations and decays in extragalactic halos. We compute intensity, angular correlation, and source counts and discuss the impact on the…

Cosmology and Nongalactic Astrophysics · Physics 2012-03-27 N. Fornengo , R. Lineros , M. Regis , M. Taoso

When comparing constraints on the Weakly Interacting Massive Particle (WIMP) properties from direct and indirect detection experiments it is crucial that the assumptions made about the dark matter (DM) distribution are realistic and…

Cosmology and Nongalactic Astrophysics · Physics 2016-08-24 David G. Cerdeno , Mattia Fornasa , Anne M. Green , Miguel Peiro

In this work we derive the first theoretical prediction of the cross-correlation signal between the unresolved gamma-ray background and the 21-cm line originated by the spin-flip transition of neutral hydrogen atoms, by taking as benchmark…

Cosmology and Nongalactic Astrophysics · Physics 2020-05-20 Elena Pinetti

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

The report describes the research program on the development of ultra-low-energy germanium detectors, with emphasis on WIMP dark matter searches. A threshold of 100 eV is achieved with a 20 g detector array, providing a unique probe to the…

High Energy Physics - Experiment · Physics 2008-11-26 H. T. Wong