Results 81 to 90 of about 60,808,388 (219)

Seasonal Variations in Aerosol Trace Element Source Contributions and Deposition Fluxes to the North Pacific Subtropical Gyre

Global Biogeochemical Cycles, Volume 40, Issue 10, October 2026.
Abstract Trace elements deposited in the marine environment affect ocean biogeochemistry in numerous, complex ways. This study quantifies seasonal aerosol trace element (TE) fluxes and evaluates their variability and potential sources over a 2‐year period in the North Pacific subtropical gyre (NPSG). We established the Hawaii Aerosol Time Series (HATS),
C. Kollman, C. M. Marsay, D. C. Ohnemus, M. Stephens, E. S. Bates, M. J. Ricci, C. S. Buck   +6 more
wiley   +1 more source

Thermal Conductivity of Iron at the Conditions of Small Planetary Cores

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract Planetary interiors cool and evolve over geologic time, and their thermal evolution depends on heat transport through their constituent layers. Here, the thermal conductivity of iron has been measured between 19 and 65 GPa and between 1700 and 2500 K in order to constrain its value at the conditions of small planetary cores.
Eric Edmund, Zachary M. Geballe, Attilio Rivoldini, Nicola Tosi, Stella Chariton, Vitali B. Prakapenka, Alexander F. Goncharov   +6 more
wiley   +1 more source

Advancing Cosmological Parameter Estimation and Hubble Parameter Reconstruction with Long Short-term Memory and Efficient Kolmogorov–Arnold Networks

The Astrophysical Journal Supplement Series
In this work, we propose a novel approach for cosmological parameter estimation and Hubble parameter reconstruction using long short-term memory (LSTM) networks and efficient Kolmogorov–Arnold networks (Ef-KAN).
Jiaxing Cui, Marek Biesiada, Ao Liu, Cuihong Wen, Tonghua Liu, Jieci Wang   +5 more
doaj   +1 more source

Cosmology and large-scale structure from quasar redshift surveys [PDF]

, 1997
Our aim in this thesis is to use the clustering of QSOs to investigate large- scale structure and cosmology. We are particularly concerned with estimating the cosmological parameters which govern the evolution of structure in the Universe.
Croom, Scott Martin, Croom, S.M.
core  

Quantifying Water Ice in Regolith Mixtures via Infrared (1.2–2.5 μm) Reflectance Model Parametrization

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract Water ice deposits occur on inner solar system bodies in sunlit and shadowed terrains. We develop approaches to remotely determine the mixing mode with regolith (areal vs. intimate), ice grain size, and abundance that reveal processes of ice formation, emplacement, and evolution.
V. V. Kachmar, B. L. Ehlmann
wiley   +1 more source

Forward-Simulations of Large-Scale Structure for Cosmological Inference [PDF]

Measuring the density of fluctuations in the large-scale structure of the Universe has become a powerful tool in constraining and testing cosmological models. Current and upcoming galaxy surveys are pushing the precision limits of current physical models,
Von Wietersheim-Kramsta, Maximilian
core   +1 more source

Toward Robustness across Cosmological Simulation Models IllustrisTNG, SIMBA, Astrid, and Swift-Eagle

The Astrophysical Journal
The rapid advancement of large-scale cosmological simulations has opened new avenues for cosmological and astrophysical research. However, the increasing diversity among cosmological simulation models presents a challenge to the robustness . In this work,
Yongseok Jo, Shy Genel, Anirvan Sengupta, Benjamin Wandelt, Rachel Somerville, Francisco Villaescusa-Navarro   +5 more
doaj   +1 more source

Improving cosmological parameter estimation with the future 21 cm observation from SKA

Physics Letters B, 2019
Future observations of 21 cm emission from neutral hydrogen survey will become a promising approach to probe the large scale structure of the Universe.
Jing-Fei Zhang, Li-Yang Gao, Dong-Ze He, Xin Zhang   +3 more
doaj   +1 more source

Viscous cosmological fluids and large-scale structure [PDF]

In this paper, we study the viscous fluid cosmological model that when certain conditions are invoked mimics the $Λ$CDM model. The background equations governing the evolution of viscous interacting fluids in a multifluid system are derived.
Sahlu, S, Mbewe, BG, Mekuria, RR, Abebe, A   +3 more
core   +1 more source

Ceres' Salty Ices: Sublimation‐Driven Evolution From Water Ice Exposures to Na‐Carbonate Deposits

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract The dwarf planet Ceres hosts nine geologically recent water ice exposures revealed by NASA's Dawn mission. We investigated the 0.04–11 km2 sites using visible imagery and infrared (1.0–4.3 μm) reflectance spectroscopy. Ice occurrence was mapped, and its abundance, grain size, and mixing mode with local regolith were constrained with Hapke ...
V. V. Kachmar, B. L. Ehlmann
wiley   +1 more source