Results 11 to 20 of about 556,485 (362)

Decaying warm dark matter revisited [PDF]

Journal of Cosmology and Astroparticle Physics, 2022
Decaying dark matter models provide a physically motivated way of channeling energy between the matter and radiation sectors. In principle, this could affect the predicted value of the Hubble constant in such a way as to accommodate the discrepancies ...
Emil Brinch Holm, T. Tram, S. Hannestad
semanticscholar   +6 more sources

Neutralino Warm Dark Matter [PDF]

Physics Letters B, 2000
In the supersymmetric (SUSY) standard model, the lightest neutralino may be the lightest SUSY particle (LSP), and it is is a candidate of the dark matter in the universe.
Bergstrom, Bergstrom, Bergstrom, Blumenthal, Borgani, Calcaneo-Roldan, Cohen, Dimopoulos, Dine, Dodelson, Ellis, Feng, Fukushige, Giudice, Giudice, Gondolo, Gondolo, Griest, Jing, Jungman, Junji Hisano, Kamionkowski, Kaplinghat, Kawasaki, Kawasaki, Kazunori Kohri, Klypin, Lin, McDonald, Mihoko M. Nojiri, Moore, Moroi, Moroi, Navarro, Navarro, Pomarol, Randall, Reno, Swaters, van del Bosch, Yokoyama   +40 more
core   +4 more sources

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 ...
J. Rose, P. Torrey, F. Villaescusa-Navarro, M. Vogelsberger, Stephanie O’Neil, M. Medvedev, Ryan Low, Rakshak Adhikari, D. Anglés-Alcázar   +8 more
semanticscholar   +3 more sources

Warm and fuzzy dark matter: Free streaming of wave dark matter [PDF]

Physical Review D
Wave or fuzzy dark matter that is produced with relativistic wave numbers exhibits free-streaming effects analogous to warm or hot particle dark matter with relativistic momenta.
Rayne Liu, Wayne Hu, Huangyu Xiao
semanticscholar   +4 more sources

Free streaming of warm wave dark matter in modified expansion histories [PDF]

Journal of Cosmology and Astroparticle Physics
In models of warm dark matter, there is an appreciable population of high momentum particles in the early universe, which free stream out of primordial over/under densities, thereby prohibiting the growth of structure on small length scales. The distance
Andrew J. Long, Moira Venegas
openalex   +2 more sources

Massive sterile neutrinos as warm Dark Matter [PDF]

Astroparticle Physics, 2000
We show that massive sterile neutrinos mixed with the ordinary ones may be produced in the early universe in the right amount to be natural warm dark matter particles.
Dolgov, A. D., Hansen, S. H.
core   +4 more sources

Mixed Warm Dark Matter Constraints using Milky Way Satellite Galaxy Counts [PDF]

Physical Review D
Warm dark matter has been strongly constrained in recent years as the sole component of dark matter. However, a less-explored alternative is that dark matter consists of a mixture of warm and cold dark matter (MWDM).
Chin Yi Tan, Ariane Dekker, Alex Drlica-Wagner   +2 more
openalex   +2 more sources

Dark Matter freeze-in during warm inflation and the seesaw mechanism [PDF]

Journal of High Energy Physics
A compelling way to address the inflationary period is via the warm inflation scenario, where the interaction of the inflaton field with other degrees of freedom affects its dynamics in such a way that slow-roll inflation is maintained by dissipative ...
Rayff de Souza, Jamerson G. Rodrigues, Clarissa Siqueira, Felipe B. M. dos Santos, Jailson Alcaniz   +4 more
doaj   +2 more sources

Constraining Warm Dark Matter using QSO gravitational lensing [PDF]

, 2007
Warm Dark Matter (WDM) has been invoked to resolve apparent conflicts of Cold Dark Matter (CDM) models with observations on subgalactic scales. In this work we provide a new and independent lower limit for the WDM particle mass (e.g.
Abazajian, Amara, Andrea V. Macciò, Asaka, Asaka, Avila-Reese, Barkana, Blanford, Bode, Bradač, Bullock, Chang, Chen, Chiba, Chiba, Colombi, Dalal, Dobler, Dodelson, Dolgov, Eke, Finch, Hansen, Jackson, Keeton, Keeton, Klypin, Koopmans, Kormann, Macciò, Macciò, Mao, Marco Miranda, Metcalf, Metcalf, Metcalf, Metcalf, Moore, Navarro, Patnaik, Peebles, Raychaudhury, Réfrégier, Saha, Schechter, Schneider, Schneider, Seljak, Seljak, Sheth, Sluse, Spergel, Spergel, Tonry, Treu, Viel, Viel, Zakharov   +57 more
core   +4 more sources

Hot QCD and warm dark matter [PDF]

Proceedings of XXIVth International Symposium on Lattice Field Theory — PoS(LAT2006), 2006
One of the possible explanations for the dark matter needed in the standard cosmological model is so-called warm dark matter, in the form of right-handed ("sterile") neutrinos with a mass in the keV range.
Laine, M.
core   +5 more sources