Results 31 to 40 of about 685,566 (247)

Prospects for measuring dark energy with 21 cm intensity mapping experiments [PDF]

Journal of Cosmology and Astroparticle Physics, 2022
Abstract Using the 21 cm intensity mapping (IM) technique can efficiently perform large-scale neutral hydrogen (HI) surveys, and this method has great potential for measuring dark-energy parameters. Some 21 cm IM experiments aiming at measuring dark energy in the redshift range of 0<z<3 have been proposed and performed, in which ...
Wu, Peng-Ju, Zhang, Xin
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Investigating the collinear splitting effects of boosted dark matter at neutrino detectors

Journal of High Energy Physics, 2023
We study the probing prospects of cosmic ray boosted dark matter (DM) in the framework of simplified electron-philic dark photon model. Focusing on the dark matter and dark photon masses around keV ~ MeV scale, we consider the bounds obtained from the ...
Jinmian Li, Junle Pei, Cong Zhang
doaj   +1 more source

The prospects for constraining dark energy with future X-ray cluster gas mass fraction measurements [PDF]

, 2008
We examine the ability of a future X-ray observatory to constrain dark energy via measurements of the cluster X-ray gas mass fraction, fgas. We find that fgas measurements for a sample of ~500 hot, X-ray bright, dynamically relaxed clusters, to a ...
Adam Mantz, Akritas, Allen, Allen, Allen, Allen, Astier, Bean, Benjamin, Bennett, Bonamente, Bond, Borgani, Briel, Bryan, Caldwell, Chevallier, Clarkson, Cole, Cooray, Copeland, Crain, David, David Rapetti, Davis, Davis, Doran, Ebeling, Ebeling, Eisenstein, Eke, Ettori, Ettori, Evrard, Fabian, Fabian, Fabian, Feng, Fosalba, Fukugita, Gladders, Gonzalez, Grego, Guo, Henry, Hoekstra, Hu, Jarvis, Jenkins, Jha, Kahya, Knop, Kodama, Kosowsky, Lacey, LaRoque, Lewis, Lewis, Lewis, Lewis, Lin, Lin, Linder, Linder, Ma, Mantz, Markevitch, Mohr, Molnar, Muchovej, Nagai, Onemli, Onemli, Page, Percival, Perlmutter, Perotto, Rapetti, Rapetti, Rassat, Reiprich, Reynolds, Riess, Riess, Riess, Roussel, Ruhl, Sanderson, Schmidt, Schuecker, Sehgal, Seljak, Spergel, Spergel, Steven W. Allen, Tegmark, Upadhye, Van Waerbeke, Viel, Vikman, Voevodkin, Weller, White, White, White, Wood-Vasey, Wright, Xia, Zhao   +108 more
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Optimizing New Dark Energy Experiments [PDF]

, 2013
Next generation “Stage IV” dark energy experiments under design during this grant, and now under construction, will enable the determination of the properties of dark energy and dark matter to unprecedented precision using multiple complementary probes.
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Status of the PADME experiment and review of dark photon searches

EPJ Web of Conferences, 2018
While accelerator particle physics has traditionally focused on exploring dark matter through highenergy experiments, testing dark-sectors hypothesis requires innovative low energy experiments that use highintensity beams and high-sensitivity detectors ...
Raggi M.
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Tritium beta decay with modified neutrino dispersion relations: KATRIN in the dark sea

Nuclear Physics B, 2023
We explore beta decays in a dark background field, which could be formed by dark matter, dark energy or a fifth force potential. In such scenarios, the neutrino's dispersion relation will be modified by its collective interaction with the dark field ...
Guo-yuan Huang, Werner Rodejohann
doaj   +1 more source

Large Scale Cosmic Microwave Background Anisotropies and Dark Energy [PDF]

, 2003
In this note we investigate the effects of perturbations in a dark energy component with a constant equation of state on large scale cosmic microwave background anisotropies. The inclusion of perturbations increases the large scale power.
A. M. Lewis, Amendola, Armendariz-Picon, Bean, Boisseau, Boughn, Burles, Caldwell, Caldwell, Carroll, Challinor, Coble, Corasaniti, DeDeo, Ferreira, Freedman, Hinshaw, Hu, J. Weller, Kogut, Kosowsky, Lewis, Maor, Melchiorri, Pearson, Peebles, Percival, Perlmutter, Perlmutter, Ratra, Riess, Riess, Sachs, Schuecker, Seljak, Spergel, Verde, Viana, Weller, Wetterich   +39 more
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Evidence for Dark Energy Driven by Star Formation: Information Dark Energy?

Entropy
Evidence is presented for dark energy resulting directly from star formation. A survey of stellar mass density measurements, SMD(a), as a function of universe scale size a, was found to be described by a simple CPL w0 − wa parameterisation that was in ...
Michael Paul Gough
doaj   +1 more source

Resolving XENON excess with decaying cold dark matter

European Physical Journal C: Particles and Fields, 2021
We propose a decaying cold dark matter model to explain the excess of electron recoil observed at the XENON1T experiment. In this scenario, the daughter dark matter from the parent dark matter decay easily obtains velocity large enough to saturate the ...
Shuai Xu, Sibo Zheng
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Dark Seesaw at Low Energy Experiments

, 2021
Based on 2007.11813 With Silvia Pascoli, Matheus ...
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