Results 81 to 90 of about 50,731 (225)

Assessing Potential Landing Sites With Favorable Illumination and Accessible, Potentially Volatile‐Rich Permanently Shadowed Regions Within Artemis Candidate Landing Regions

Journal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.
Abstract The lunar south pole features permanently shadowed regions (PSRs) that never receive direct sunlight. These regions maintain cold temperatures that potentially trap and accumulate volatiles over geologic timescales. Within NASA's Artemis candidate landing regions, we identified 130 candidate landing sites (CLSs) that satisfy the Human Landing ...
Lukas Wueller, Lauren M. Berger, Hephzibah Christopher, Kanori Sugimoto, Ashka D. Thaker, Louis Carton, William Jo, Seungil Lee, Riccardo Pedrelli, Pedro Sanchez, David A. Kring   +10 more
wiley   +1 more source

Spectroscopic r-process Abundance Retrieval for Kilonovae. II. Lanthanides in the Inferred Abundance Patterns of Multicomponent Ejecta from the GW170817 Kilonova

The Astrophysical Journal
In kilonovae, freshly synthesized r -process elements imprint features on optical spectra, as observed in AT2017gfo, the counterpart to the GW170817 binary neutron star merger.
Nicholas Vieira, John J. Ruan, Daryl Haggard, Nicole M. Ford, Maria R. Drout, Rodrigo Fernández   +5 more
doaj   +1 more source

Luminous type IIP SN 2013ej with high-velocity Ni-56 ejecta

, 2017
We explore the well-observed type IIP SN 2013ej with peculiar luminosity evolution. It is found that the hydrodynamic model cannot reproduce in detail the bolometric luminosity at both the plateau and the radioactive tail.
Chugai, N. N., Utrobin, V. P.
core   +1 more source

Collection, Collation, and Comparison of Near‐Earth In Situ CME Boundaries

Space Weather, Volume 24, Issue 3, March 2026.
Abstract Coronal mass ejections (CMEs) drive space weather throughout the heliosphere so knowledge of their internal properties is key to understanding and eventually forecasting their effects. Typically observations are limited to single‐spacecraft encounters sampling one path that may or may not be representative of the overall structure.
C. Kay, E. E. Davies, M. Dumbović, K. Martinić, E. Palmerio, H. T. Rüdisser, E. Weiler, C. Möstl   +7 more
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

The dynamical mass ejection from binary neutron star mergers: Radiation-hydrodynamics study in general relativity

, 2015
We perform radiation-hydrodynamics simulations of binary neutron star mergers in numerical relativity on the Japanese "K" supercomputer, taking into account neutrino cooling and heating by an updated leakage-plus-transfer scheme for the first time ...
Kiuchi, Kenta, Kyutoku, Koutarou, Sekiguchi, Yuichiro, Shibata, Masaru   +3 more
core   +1 more source

Pacing Early Mars Sedimentary Rock Formation

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Mars' sedimentary rock record documents past surface and/or near‐surface liquid water. However, paleoclimate models struggle to explain conditions warm enough for past liquid water. One hypothesis is transient warming by H2 ${\mathrm{H}}_{2}$‐CO2 ${\text{CO}}_{2}$ collision‐induced absorption (CIA) (H2 ${\mathrm{H}}_{2}$‐CO2 ${\text{CO}}_{2 ...
M. L. Turner, E. S. Kite
wiley   +1 more source

The Effect of the Velocity Distribution on Kilonova Emission

The Astrophysical Journal
The electromagnetic emission from the nonrelativistic ejecta launched in neutron star mergers (either dynamically or through a disk wind) has the potential to probe both the total mass and composition of this ejecta.
Chris L. Fryer, Aimee L. Hungerford, Ryan T. Wollaeger, Jonah M. Miller, Soumi De, Christopher J. Fontes, Oleg Korobkin, Atul Kedia, Marko Ristic, Richard O’Shaughnessy   +9 more
doaj   +1 more source

Circumstellar ejecta around LBV’s [PDF]

International Astronomical Union Colloquium, 1989
Abstract The properties of circumstellar shells around LBV’s are reviewed. Some LBV’s are surrounded by very extended nebulosities, similar to classical planetary nebulae, with AG Car as the prototype. The masses of these nebulae are of the order of a solar mass and their kinematic ages are about 104 years.
openaire   +1 more source

Galileo PLS Plasma Observations During the E12 Europa Flyby Refuting an Encounter With a Cryovolcanic Plume

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract During Galileo's closest (“E12”) flyby of Europa, a brief burst of wave activity was recorded by the plasma wave instrumentation, PWS. This was speculatively interpreted by Jia et al. (2018, https://doi.org/10.1038/s41550‐018‐0450‐z) as a 2,100 cm−3 spike in plasma densities from a water plume encounter. While the plasma instrument, PLS, could
William. R. Paterson, Glyn. A. Collinson
wiley   +1 more source