Results 51 to 60 of about 21,756 (168)

MMS Observations of Whistler‐Mode Waves: Comparison Between the Observed and Theoretically Predicted Electric Field

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Electric field instruments function by electrically coupling to the surrounding plasma, resulting in a response function that varies depending on local conditions. This variable coupling can complicate quantitative interpretation of wave measurements, yet is rarely considered.
D. P. Hartley, I. W. Christopher, M. R. Argall, N. Ahmadi, O. Santolík, I. Kolmašová, Y. V. Khotyaintsev, I. Svenningsson   +7 more
wiley   +1 more source

Catalyzed baryogenesis

Journal of High Energy Physics, 2021
A novel mechanism, “catalyzed baryogenesis”, is proposed to explain the observed baryon asymmetry in our universe. In this mechanism, the motion of a ball-like catalyst provides the necessary out-of-equilibrium condition, its outer wall has CP-violating ...
Yang Bai, Joshua Berger, Mrunal Korwar, Nicholas Orlofsky   +3 more
doaj   +1 more source

Can Dark Matter be an artifact of extended theories of gravity?

, 2016
In this article, we propose different background models of extended theories of gravity, which are minimally coupled to the SM fields, to explain the possibility of genesis of dark matter without affecting the SM particle sector.
Choudhury, Sayantan, Sadhukhan, Soumya, Sen, Manibrata   +2 more
core   +1 more source

LHC / ILC / Cosmology Interplay [PDF]

, 2006
There is a strong and growing interplay between particle physics and cosmology. In this talk, I discuss some aspects of this interplay concerning dark matter candidates put forth by theories beyond the Standard Model.
A J Barr, A Pilaftsis, A Pilaftsis, B C Allanach, C L Bennett, D A Demir, D N Spergel, E W Kolb, G Belanger, G Bertone, G Jungman, H Goldberg, J R Ellis, K Desch, K Enqvist, M Dine, M Drees, M Tegmark, R Barate, Sabine Kraml, V Khotilovich   +20 more
core   +2 more sources

Characterization of Mercury's Atomic and Molecular Hydrogen Exosphere and the First Detection of H2 Ions

Journal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.
Abstract From 1974 to 1975, the Mariner 10 spacecraft studied Mercury's environment during three flybys and detected hydrogen, helium, and possibly atomic oxygen in the exosphere using its ultraviolet spectrometer, but no molecular hydrogen. Based on the sensitivity of the occultation instrument, an upper limit for the H2 ${\mathrm{H}}_{2}$ surface ...
F. Weichbold, D. Schmid, H. Lammer, M. Volwerk, M. Scherf, N. V. Erkaev, A. Varsani, C. Simon Wedlund, C. Mazelle   +8 more
wiley   +1 more source

Light fermionic WIMP dark matter with light scalar mediator

Journal of High Energy Physics, 2019
A light fermionic weakly interacting massive particle (WIMP) dark matter is investigated by studying its minimal renormalizable model, where it requires a scalar mediator to have an interaction between the WIMP and standard model particles.
Shigeki Matsumoto, Yue-Lin Sming Tsai, Po-Yan Tseng   +2 more
doaj   +1 more source

Effects of Hydrogen on Fe‐S Alloys and Their Implications for the Martian Core

Journal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.
Abstract Meteorites suggest the Martian core comprises iron (Fe) or iron‐nickel (Fe‐Ni) alloy with sulfur (S) identified as the primary light element. The InSight data revealed a larger, less dense Martian core than previously estimated, indicating additional light elements.
Xuehui Wei, Stella Chariton, Vitali B. Prakapenka, Yingwei Fei, Sang‐Heon Shim   +4 more
wiley   +1 more source

Chiral composite asymmetric dark matter

Journal of High Energy Physics, 2021
The asymmetric dark matter (ADM) scenario solves the baryon-dark matter coincidence problem when the dark matter (DM) mass is of O 1 $$ \mathcal{O}(1) $$ GeV.
Masahiro Ibe, Shin Kobayashi, Keiichi Watanabe   +2 more
doaj   +1 more source

Asymmetric Crater Relaxation on an Ice‐Rich Ceres Driven by Insolation

Journal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.
Abstract Ceres has a high ice content within its crust and is the closest dwarf planet to the sun. The resultant high insolation levels at Ceres' surface (in comparison to the outer solar system) leads to high variations in surface temperature, which is dependent on both latitude and orientation of the slope (i.e., equatorward‐ or poleward‐facing).
I. F. Pamerleau, M. M. Sori, J. E. C. Scully   +2 more
wiley   +1 more source

Neutrino dark matter and the Higgs portal: improved freeze-in analysis

Journal of High Energy Physics, 2020
Sterile neutrinos are one of the leading dark matter candidates. Their masses may originate from a vacuum expectation value of a scalar field. If the sterile neutrino couplings are very small and their direct coupling to the inflaton is forbidden by the ...
Valentina De Romeri, Dimitrios Karamitros, Oleg Lebedev, Takashi Toma   +3 more
doaj   +1 more source