Results 61 to 70 of about 21,268 (194)

A Comprehensive Framework for Assessing Terrestrial Analogue Field Sites for Ocean Worlds

Journal of Geophysical Research: Planets, Volume 130, Issue 9, September 2025.
Abstract Field studies at terrestrial analogue sites represent an important contribution to the science of ocean worlds. The value of the science and technology investigations conducted at field analogue sites depends on the relevance of the analogue environment to the target ocean world.
Jennifer C. Stern, Heather V. Graham, Bradley Burcar, Emily S. Martin, Aaron Noell, Kevin Hand, Jeff S. Bowman, Peter Doran, Virginia Edgcomb, James F. Holden, Alta E. G. Howells, Michael J. Malaska, Brook L. Nunn, Jani Radebaugh, Laura E. Rodriguez, Schuyler Borges, Dina Bower, Samuel Courville, Melisa Diaz, Benjamin Hockman, Julie Huber, Justin Lawrence, Trista Vick‐Majors, Conor A. Nixon, John R. Spear, Amanda V. Steckel, Anezina Solomonidou, Nicholas Schmerr, Britney Schmidt, Matthew O. Schrenk, Lauren Seyler, Amy R. Smith, Catherine C. Walker, Patrick Whelley, Natalie Wolfenbarger, Steven D. Vance   +35 more
wiley   +1 more source

Dark matter in Hidden Valley models with stable and unstable light dark mesons

Journal of High Energy Physics, 2019
It is a distinct possibility that a Hidden Valley sector would have a spectrum of light particles consisting of both stable and unstable dark mesons. The simultaneous presence of these two types of particles can lead to novel mechanisms for generating ...
Hugues Beauchesne, Enrico Bertuzzo, Giovanni Grilli di Cortona   +2 more
doaj   +1 more source

Cosmology in Mirror Twin Higgs and Neutrino Masses

, 2016
We explore a simple solution to the cosmological challenges of the original Mirror Twin Higgs (MTH) model that leads to interesting implications for experiment.
Chacko, Zackaria, Craig, Nathaniel, Fox, Patrick J., Harnik, Roni   +3 more
core   +1 more source

A Time‐Dependent Model of the Vibrational Distribution of Nitrogen Molecules: New Rate Data Sets and Self‐Consistent Coupling With Auroral and Ionospheric Electrons

Journal of Geophysical Research: Space Physics, Volume 130, Issue 9, September 2025.
Abstract Vibrationally excited nitrogen molecules (N2) play an important role in the chemistry and dynamics of Earth's atmosphere. Electron impact, whether it originates from auroral precipitation or ionospheric thermal electrons, is among the major causes of the vibrational excitation of N2.
Jun Liang, J.‐P. St‐Maurice, E. Donovan   +2 more
wiley   +1 more source

Coscattering/coannihilation dark matter in a fraternal twin Higgs model

Journal of High Energy Physics, 2018
Dark matter candidates arise naturally in many models that address the hierarchy problem. In the fraternal twin Higgs model which could explain the absence of the new physics signals at the Large Hadron Collider (LHC), there are several viable dark ...
Hsin-Chia Cheng, Lingfeng Li, Rui Zheng
doaj   +1 more source

We must know. We will know

, 2010
The after-dinner talk has by now become a tradition of this Conference series on Quark Confinement and the Hadron Spectrum. On this occasion, I have tried to combine a free-style and (hopefully) amusing presentation with deep questions of physics ...
Sanchis-Lozano, Miguel-Angel
core   +1 more source

Field theory axiverse

Physical Review D
Axion and axionlike particles are a prominent candidate for physics beyond the Standard Model and can play an important role in cosmology, serving as dark matter or dark energy, or both, drawing motivation in part from the string theory axiverse ...
Stephon Alexander, Tucker Manton, Evan McDonough   +2 more
semanticscholar   +1 more source

Rock Coatings as Evidence for Late Surface Alteration on the Floor of Jezero Crater, Mars

Journal of Geophysical Research: Planets, Volume 130, Issue 9, September 2025.
Abstract During the NASA Perseverance rover's exploration of the Jezero crater floor, coatings were commonly observed on rocks. These features may record past water‐rock‐atmosphere interactions on the crater floor, and understanding their origin is important for constraining the timing of potential water activity and habitability at Jezero.
Bradley J. Garczynski, Briony H. N. Horgan, Jeffrey R. Johnson, Melissa S. Rice, Lucia Mandon, Baptiste Chide, Andreas Bechtold, Pierre Beck, James F. Bell III, Erwin Dehouck, Alberto G. Fairén, Felipe Gómez, Pierre‐Yves Meslin, Gerhard Paar, Mark A. Sephton, Justin I. Simon, Christoph Traxler, Alicia Vaughan, Roger C. Wiens, Tanguy Bertrand, Olivier Beyssac, Adrian J. Brown, Emily L. Cardarelli, Edward A. Cloutis, Louise Duflot, David T. Flannery, Patrick Gasda, Alexander G. Hayes, Christopher D. K. Herd, Linda Kah, Kjartan B. Kinch, Nina Lanza, Marco Merusi, Chase C. Million, Jorge I. Núñez, Ann M. Ollila, Clément Royer, Michael St. Clair, Christian Tate, Anastasia Yanchilina   +39 more
wiley   +1 more source

Constraints on axions from cosmic distance measurements

Journal of High Energy Physics, 2022
Axion couplings to photons could induce photon-axion conversion in the presence of magnetic fields in the Universe. This conversion could impact various cosmic distance measurements, such as luminosity distances to type Ia supernovae and angular ...
Manuel A. Buen-Abad, JiJi Fan, Chen Sun
doaj   +1 more source

Scalar-tensor cosmology at the general relativity limit: Jordan vs Einstein frame

, 2008
We consider the correspondence between the Jordan frame and the Einstein frame descriptions of scalar-tensor theory of gravitation. We argue that since the redefinition of the scalar field is not differentiable at the limit of general relativity the ...
C. M. Will, Laur Järv, M. Fierz, Margus Saal, P. Jordan, Piret Kuusk, S. Weinberg, V. Faraoni, V. Faraoni, Y. Fujii   +9 more
core   +1 more source