Results 11 to 20 of about 56,805 (216)

Molecules in Supernova Ejecta [PDF]

open access: yesProceedings of the International Astronomical Union, 2011
AbstractThe first molecules detected at infrared wavelengths in the ejecta of a Type II supernova, namely SN1987A, consisted of CO and SiO. Since then, confirmation of the formation of these two species in several other supernovae a few hundred days after explosion has been obtained.
Cherchneff Isabelle, Sarangi Arkaprabha
openaire   +5 more sources

Repeating Low Frequency Icequakes in the Mont‐Blanc Massif Triggered by Snowfalls

open access: yesJournal of Geophysical Research: Earth Surface, Volume 127, Issue 12, December 2022., 2022
Abstract Deformation mechanisms of glaciers are highly sensitive to basal temperature; the motion of temperate glaciers is dominated by basal slip while cold‐based glaciers deform mainly by internal creep. While basal slip is usually aseismic, unstable slip sometimes occurs and can be detected by seismometers.
Agnès Helmstetter
wiley   +1 more source

Design, build, test and flight of the world's fastest electric aircraft

open access: yesIET Electrical Systems in Transportation, Volume 12, Issue 4, Page 380-402, December 2022., 2022
Project ACCEL pushed the limits of energy management, thermal management, and mass saving, while maintaining measured safety for the pilot and crew to ultimately achieve world record‐breaking flights. The blank sheet design of the ESS and powertrain allowed for an appropriately optimised solution, swiftly moving into physical testing allowed for rapid ...
Timothy Bingham   +3 more
wiley   +1 more source

A numerical study of the interaction between two ejecta in the interplanetary medium: one- and two-dimensional hydrodynamic simulations [PDF]

open access: yesAnnales Geophysicae, 2004
We studied the heliospheric evolution in one and two dimensions of the interaction between two ejecta-like disturbances beyond the critical point: a faster ejecta 2 overtaking a previously launched slower ejecta 1. The study is based on a
A. Gonzalez-Esparza   +2 more
doaj   +1 more source

Groove formation on Phobos from reimpacting orbital ejecta of the Stickney crater

open access: yesEarth and Planetary Physics, 2022
Numerous linear grooves have long been recognized as covering the surface of Phobos, but the mechanisms of their formation are still unclear. One possible mechanism is related to the largest crater on Phobos, the Stickney crater, whose impact ejecta may ...
XiangYu Xi, Min Ding, MengHua Zhu
doaj   +1 more source

Nepheline-kalsilite microperthites in ejecta from the Alban Hills (Italy) [PDF]

open access: yesBulletin of the Geological Society of Finland, 1985
Microprobe analyses carried out on exsolved nepheline and kalsilite phases of microperthites occurring in three ejecta from the Alban Hills (Roman comagmatic region) have shown: (1) a practically continuous compositional variation from Ks to Ne (bulk ...
C. Aurisicchio, M. Federico
doaj   +1 more source

Fine debris flows formed by the Orientale basin

open access: yesEarth and Planetary Physics, 2020
The prototype for investigations of formation mechanisms and related geological effects of large impact basins on planetary bodies has been the Orientale basin on the Moon.
YuZhen Cai   +3 more
doaj   +1 more source

Comparison of Topographic Roughness of Layered Deposits on Mars

open access: yesRemote Sensing, 2023
Impact craters with layered ejecta deposits are widespread on Mars. Prevailing views suggest that such ejecta were formed due to the involvement of target water and/or water ice in the impact excavation and/or the post-deposition movement of the impact ...
Wei Cao   +4 more
doaj   +1 more source

Constraint on the ejecta mass for a black hole-neutron star merger event candidate S190814bv [PDF]

open access: yes, 2020
We derive the upper limit to the ejecta mass of S190814bv, a black hole-neutron star merger candidate, through the radiative transfer simulations for kilonovae with the realistic ejecta density profile as well as the detailed opacity and heating rate ...
Kawaguchi, Kyohei   +2 more
core   +2 more sources

Dynamic simulations of projectile penetration into granular medium

open access: yesMechanical Engineering Journal, 2014
Dynamic FEM and DEM simulations are carried out to investigate dynamic penetration of a projectile into a target of granular medium. Spatial distribution and time dependence of ejecta are clarified together with their trajectories in medium.
Kinya OGAWA   +2 more
doaj   +1 more source

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