Results 81 to 90 of about 15,129 (166)

Astrophysics experiments with radioactive beams at ATLAS

AIP Advances, 2014
Reactions involving short-lived nuclei play an important role in nuclear astrophysics, especially in explosive scenarios which occur in novae, supernovae or X-ray bursts.
B. B. Back, J. A. Clark, R. C. Pardo, K. E. Rehm, G. Savard   +4 more
doaj   +1 more source

Carbonate‐Associated Sulfate Does Not Record Superheavy δ34S in Deep Scandinavian Bedrock Fractures: Implications for Pyrite Formation in the Deep Biosphere

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract In deep bedrock fractures of the Fennoscandian shield, pyrite with “superheavy” δ34S values of up to 147‰ exists together with calcite. The extreme variability and 34S‐enrichment in pyrite indicate that microbial sulfate reduction (MSR) evolved to almost complete sulfate exhaustion in closed‐system microenvironments.
V. Fichtner, F. Genske, E. Kooijman, H. Drake   +3 more
wiley   +1 more source

Marc Chaussidon—Leonard Medal 2026

Meteoritics &Planetary Science, EarlyView.
François Robert
wiley   +1 more source

Petrogenesis and Tectonic Evolution of Cenozoic Magmatism in the Southernmost Northern Andes: Insights From Zircon Petrochronology

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract This study integrates new zircon U–Pb ages, zircon εHf(t)–δ18O isotopic data, and whole‐rock geochemistry to refine the temporal and spatial framework of magmatism in the southern Northern Andes (SNA) from ∼65 to 6 Ma. The San Lucas, Catamayo, Portachuela, and Gonzanamá batholiths and magmatic suites, along with Late Miocene plutons, display ...
J. Iglesias, C. Witt, L. C. Sandoval Espinel, M. Zattin, M. Poujol, O. Bruguier, O. Poma, M. J. Hernández, O. Averbuch, M. Seyler, D. Bosch, F. Chanier, S. Ventalon, C. Liorzou, V. Bosse   +14 more
wiley   +1 more source

The 2025 Evaluation of Experimental Thermonuclear Reaction Rates (ETR25)

The Astrophysical Journal Supplement Series
This work describes the formalism for estimating thermonuclear reaction rates for astrophysical applications, emphasizing modern statistical approaches such as Monte Carlo sampling and Bayesian models.
Christian Iliadis, Richard Longland, Kiana Setoodehnia, Caleb Marshall, Peter Mohr, Athanasios Psaltis   +5 more
doaj   +1 more source

Neutral Wind Dynamics in High‐Latitude Regions During the 17 March 2013 Storm

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract Neutral winds play a critical role in transporting mass, momentum, and energy throughout the upper atmosphere. During geomagnetic storms, momentum is transferred to the thermosphere primarily through ion–neutral collisions, along with other forces. This study investigates high‐latitude neutral wind dynamics during the 17 March 2013 storm using
A. Alhothali, A. J. Ridley, M. Akhavan‐Tafti   +2 more
wiley   +1 more source

Massive Rocky Planets May Suppress Deep Melting

AGU Advances, Volume 7, Issue 4, August 2026.
Abstract Melting properties of silicates are critical to understanding the thermal evolution of rocky planetary interiors. In the deep mantles of massive rocky planets, post‐post‐spinel Mg2SiO4 ${\text{Mg}}_{2}{\text{SiO}}_{4}$ is potentially one of the most abundant mineral phases, yet its melting behavior remains unconstrained. Here, we determine the
Donghao Zheng, Yihang Peng, Jie Deng
wiley   +1 more source

Tertiary‐Ozone‐Maximum‐Like Mesospheric Ozone Increases Driven by Solar Eclipses: Sensitivity Experiments on WACCM‐X

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract Solar eclipses offer natural experiments to isolate the photochemical response of mesospheric ozone to solar radiation. Using the WACCM‐X model, we performed mechanism‐oriented sensitivity experiments for the 14 December 2020 eclipse to quantify the tertiary‐ozone‐maximum‐like (TOM‐like) response.
T. Yang, T. Nagahama, A. Mizuno, T. Dang, J. Lei, Joseph M. McInerney   +5 more
wiley   +1 more source

A Contrasting TEC Behavior Over the Low‐Latitude Post‐Midnight Sector During Recovery Phases of May and October 2024 Storms: Possible Role of PPEF, DDEF, and O/N2

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract The present study reports on the variability of the post‐midnight ionosphere over the low‐latitude sector during the recovery phases of the May and October 2024 storms. Multi‐instrument observations, comprising global navigation satellite system total electron content (TEC), F‐layer peak height, electron density profiles, and column O/N2 ...
Rahul Rathi, Akash Kumar, Alok Kumar Ranjan, Dipjyoti Patgiri, Satarupa Chakrabarti, Lot Ram   +5 more
wiley   +1 more source

Degenerate Neutron Capture Rates in the Threshold of Neutron Star–Black Hole Mergers

The Astrophysical Journal
We first show that the rate of energy generation due to neutron capture rates can be important in neutron star–black hole mergers (NS–BH mergers) by considering neutron degeneracy.
Rita K. Y. Lau
doaj   +1 more source