Results 51 to 60 of about 2,733 (195)

Aluminum Phyllosilicate and Jarosite Formation Through Alteration of Reworked Al/Si‐Rich Volcaniclastic Sediments in Nili Fossae, Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 8, August 2026.
Abstract Aluminum phyllosilicates occur in 1–10s of km2 exposures of Noachian (∼3.7 Ga) rock across Mars and typically appear stratigraphically above Fe/Mg‐phyllosilicates. These units have been proposed to represent pedogenic basalt weathering sequences.
S. R. Baker, B. L. Ehlmann
wiley   +1 more source

Linking Analytic Light-curve Models to Physical Properties of Kilonovae

The Astrophysical Journal
In binary neutron star mergers, lanthanide-rich dynamical ejecta and lanthanide-poor postmerger ejecta have often been linked to red and blue kilonova emission, respectively.
Ayari Kitamura, Kyohei Kawaguchi, Masaomi Tanaka, Sho Fujibayashi   +3 more
doaj   +1 more source

The Length of Martian Crater Rays and Their Relation to Lunar Cold Spots

Journal of Geophysical Research: Planets, Volume 131, Issue 8, August 2026.
Abstract Impact‐generated crater rays are well‐documented on the Moon, with most appearing as high‐albedo streaks extending radially from a crater's center. On Mars, however, crater rays are significantly rarer and discernible only through thermal imaging due to their lower thermal inertia compared to surrounding terrain.
Trevor P. Erwin, Brandon C. Johnson, David Minton, Alexandria V. Johnson   +3 more
wiley   +1 more source

Subsurface Structure and Morphometry of the Wrinkle Ridges in the Late Amazonian Volcanic Unit on Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 8, August 2026.
Abstract Wrinkle ridges are widespread compressional tectonic features on Mars and are important records of the planet's global contractional history. However, their formation, evolution and subsequent modification by other geologic processes remain poorly constrained.
Jianfei Liu, Lu Pan
wiley   +1 more source

r-process Heating Feedback on Disk Outflows from Neutron Star Mergers

The Astrophysical Journal
Neutron star mergers produce r -process elements, with yields that are sensitive to the kinematic and thermodynamic properties of the ejecta. These ejecta properties are potentially affected by dynamically important feedback from r -process heating ...
Li-Ting Ma, Kuo-Chuan Pan, Meng-Ru Wu, Rodrigo Fernández   +3 more
doaj   +1 more source

Near‐Earth Solar Wind Speed of Fast Coronal Mass Ejections

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract Using solar wind and ground magnetometer data for solar cycles 23–25, extreme‐value power‐law models are developed that quantify relationships between near‐Earth solar wind speed and Sun‐to‐Earth transit times of interplanetary coronal mass ejections (ICMEs).
Jeffrey J. Love, Ian G. Richardson, E. Joshua Rigler, Kalevi Mursula   +3 more
wiley   +1 more source

Effect of Target Properties on Regolith Production

Remote Sensing
Based on the measurements of regolith thicknesses on the lunar maria (basalts), the lunar regolith was determined to have accumulated at a rate of about 1 m/Gyr since the era of the late heavy bombardment.
Minggang Xie, Yan Li
doaj   +1 more source

Effect of Lunar Rotation on Antipodal Ejecta Deposition

Journal of Geophysical Research: Planets, Volume 131, Issue 8, August 2026.
Abstract The Moon's crust exhibits strong magnetic anomalies that likely record ancient magnetic fields produced by a core dynamo. Lunar materials have low magnetic susceptibility, but impactor material with high susceptibility may record the Moon's ancient dynamo. Some magnetic anomalies are antipodal to lunar basins and it is hypothesized that impact
S. Wakita, B. C. Johnson
wiley   +1 more source

3D Reconstruction of DART Ejecta at Dimorphos Reveals an Anisotropic, Filamentary Structure

The Planetary Science Journal
We present a 3D reconstruction of the ejecta plume generated by the DART impact on Dimorphos based on LUKE images acquired by LICIACube. Using adaptive histogram equalization and geometric coregistration from multiple vantage points, we identified and ...
J. D. P. Deshapriya, P. H. Hasselmann, I. Gai, E. Dotto, S. Ivanovski, A. Rossi, A. Zinzi, V. Della Corte, I. Bertini, S. Ieva, E. Mazzotta Epifani, M. Dall’Ora, D. Perna, M. Amoroso, J. Beccarelli, J. R. Brucato, L. Calderone, A. Campo Bagatin, A. Capannolo, S. Caporali, M. Ceresoli, A. Cheng, G. Cremonese, R. T. Daly, L. Gomez Casajus, Xiaoyu Fu, David A. Glenar, E. Gramigna, G. Impresario, Seth A. Jacobson, Özgür Karatekin, R. Lasagni Manghi, M. Lavagna, Ramin Lolachi, M. Lombardo, A. Lucchetti, R. Luther, D. Modenini, M. Pajola, E. Palmer, S. Pirrotta, G. Poggiali, S. Raducan, P. Sánchez, Cem Berk Senel, Timothy J. Stubbs, G. Tancredi, P. Tortora, F. Tusberti, M. Zannoni, G. Zanotti   +50 more
doaj   +1 more source

Ejecta velocities in twice-shocked liquid metals under extreme conditions: A hydrodynamic approach

Matter and Radiation at Extremes, 2019
We apply a hydrodynamic approach to analyze ejecta emanating from doubly shocked liquid metals. In particular, we are interested in characterizing ejecta velocities in such situations by treating the problem as a limiting case of the ...
V. Karkhanis, P. Ramaprabhu
doaj   +1 more source