Results 1 to 10 of about 144,169 (298)
Warm dark matter from a gravitational freeze-in in extra dimensions [PDF]
Journal of High Energy Physics, 2023 We study the freeze-in of gravitationally interacting dark matter in extra dimensions. Focusing on a minimal dark matter candidate that only interacts with the SM via gravity in a five-dimensional model we find that a large range of dark matter and ...
A. de Giorgi, S. Vogl
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Warm Dark Matter in Simulations [PDF]
Universe, 2022 In recent years, warm dark matter models have been studied as a viable alternative to the cold dark matter models. The warm dark matter particle properties are expected to imprint distinct signatures on the structure formation at both large and small ...
Sinziana Paduroiu
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Can We Constrain Warm Dark Matter Masses with Individual Galaxies? [PDF]
The Astrophysical JournalWe study the impact of warm dark matter (WDM) mass on the internal properties of individual galaxies using a large suite of 1024 state-of-the-art cosmological hydrodynamic simulations from the DREAMS project.
Shurui Lin +11 more
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Inferring Warm Dark Matter Masses with Deep Learning [PDF]
Monthly notices of the Royal Astronomical Society, 2023 We present a new suite of over 1,500 cosmological N-body simulations with varied Warm Dark Matter (WDM) models ranging from 2.5 to 30 keV. We use these simulations to train Convolutional Neural Networks (CNNs) to infer WDM particle masses from images ...
Jonah C. Rose +8 more
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New Galaxy UV Luminosity Constraints on Warm Dark Matter from JWST [PDF]
The Astrophysical JournalWe exploit the recent James Webb Space Telescope (JWST) determination of galaxy UV luminosity functions over the redshift range z = 9–14.5 to derive constraints on warm dark matter (WDM) models. The delayed structure formations in WDM universes make high-
Bin Liu, Huanyuan Shan, Jiajun Zhang
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Non-thermal warm dark matter limits from small-scale structure [PDF]
Physical Review D, 2023 We present small-scale structure constraints on sterile dark matter produced from a heavy mediator particle, inspired by models of moduli decay. Dark matter particles produced through this mechanism can contribute to the entire dark matter energy density
Arka Banerjee +4 more
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Constraints on warm dark matter from UV luminosity functions of high-z galaxies with Bayesian model comparison [PDF]
Monthly notices of the Royal Astronomical Society, 2021 The number density of small dark matter (DM) haloes hosting faint high-redshift galaxies is sensitive to the DM free-streaming properties. However, constraining these DM properties is complicated by degeneracies with the uncertain baryonic physics ...
Anton Rudakovskyi +3 more
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Quantum Statistical Effects on Warm Dark Matter and the Mass Constraint from the Cosmic Structure at Small Scales [PDF]
The Astrophysical Journal LettersThe suppression of the small-scale matter power spectrum is a distinct feature of warm dark matter (WDM), which permits a constraint on the WDM mass from galaxy surveys. In the thermal relic WDM scenario, quantum statistical effects are not manifest.
Zhijian Zhang, Weikang Lin
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Impact of Warm Dark Matter on the Cosmic Neutrino Background Anisotropies [PDF]
Universe, 2022 The Cosmic Neutrino Background (CνB) anisotropies for massive neutrinos are a unique probe of large-scale structure formation. The redshift-distance measure is completely different for massive neutrinos as compared to electromagnetic radiation.
Christopher G. Tully, Gemma Zhang
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The Epoch of Reionization in Warm Dark Matter Scenarios [PDF]
Universe, 2021 In this paper we investigate how the Reionization process is affected by early galaxy formation in different cosmological scenarios. We use a semi-analytic model with suppressed initial power spectra to obtain the UV Luminosity Function in thermal Warm ...
Massimiliano Romanello +2 more
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