Results 51 to 60 of about 50,958 (220)

Spatial identification of the overionized plasma in W49B [PDF]

, 2010
Recent Suzaku X-ray observations of the ejecta-dominated supernova remnant W49B have shown that in the global spectrum there is a clear indication for the presence of overionized plasma whose physical origin is still under debate.
A. Decourchelle, F. Bocchino, F. Reale, Hwang, J. Ballet, Kawasaki, Keohane, Lacey, Lopez, Lopez, M. Miceli, Miceli, Miceli, Ozawa, Reale, Yamaguchi   +15 more
core   +2 more sources

Molecules in Supernova Ejecta [PDF]

Proceedings 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   +4 more sources

Microbial Endolithic Community at Meteor Crater

Meteoritics &Planetary Science, EarlyView.
Abstract Postimpact recovery and evolution in response to climate changes produced a modern ecosystem at Meteor Crater dominated by a grassland and woodland of piñon and juniper, which has been used to evaluate floral and megafaunal consequences of impact cratering during the Phanerozoic Eon of complex life.
David A. Kring, Charles S. Cockell
wiley   +1 more source

The interaction of core-collapse supernova ejecta with a companion star

, 2015
The progenitors of many CCSNe are expected to be in binary systems. After the SN explosion, the companion may suffer from mass stripping and be shock heated as a result of the impact of the SN ejecta.
Izzard, Robert G., Kruckow, Matthias, Liu, Zheng-Wei, Moriya, Takashi J., Roepke, Friedrich K., Stancliffe, Richard J., Tauris, Thomas M.   +6 more
core   +1 more source

Confirmation of the impact origin of the Late Ordovician Tvären impact structure (southeast Sweden) and emplacement of impactites in a marine setting

Meteoritics &Planetary Science, EarlyView.
Abstract The Tvären structure in southeastern Sweden has been listed as a confirmed marine‐target impact structure for decades. However, to date, no measurements and/or indexed data of planar deformation features in quartz grains from the structure have been published or any other unequivocal evidence of impact.
Katarzyna J. Gajewska, Sanna Alwmark, Mikael Calner, Sylvain Richoz, Jens Ormö, Erik Sturkell, Carl Alwmark   +6 more
wiley   +1 more source

Polymict melt‐bearing breccia dikes in the Morokweng impact structure formed by slip‐induced mechanical mixing of pseudotachylite and cataclasite along large‐displacement impact faults

Meteoritics &Planetary Science, EarlyView.
Abstract A core drilled through shocked and faulted Archean granitoid gneisses and dolerites in the eroded peak ring of the 70–80 km diameter Morokweng impact structure intersects multiple centimeter‐ to meter‐wide clastic‐matrix breccias containing a polymict clast population of lithic and mineral clasts and altered, millimeter‐ to centimeter ‐size ...
Roger L. Gibson, S'lindile S. Wela, Leonidas C. Vonopartis, Marco A. G. Andreoli   +3 more
wiley   +1 more source

Numerical Simulation of the Elastic–Plastic Ejection from Grooved Aluminum Surfaces Under Double Supported Shocks Using the SPH Method

Applied Sciences
The ejection of disturbed surfaces under multiple shocks is a critical phenomenon in pyrotechnic and inertial confinement fusion. In this study, the elastic–plastic ejection from grooved aluminum surfaces under double supported shocks was investigated ...
Wenbin Liu, Han Xiao
doaj   +1 more source

Layering Structures in the Porous Material Beneath the Chang'e‐3 Landing Site

Earth and Space Science, 2020
The lunar penetrating radar (LPR) onboard the Chinese Chang'e‐3 (CE‐3) mission obtained high‐resolution profile data for the continuous ejecta deposits of the Ziwei crater.
Chunyu Ding, Chunlai Li, Zhiyong Xiao, Yan Su, Shuguo Xing, Yichen Wang, Jianqing Feng, Shun Dai, Yuan Xiao, Meijuan Yao   +9 more
doaj   +1 more source

Doppler Broadening and Line-of-sight Effects in Core-collapse Supernovae and Young Remnants

The Astrophysical Journal, 2023
The dynamics and spectral characteristics of supernova ejecta reveal details of the supernova energetics, explosive nucleosynthesis, and evolution of the progenitor.
Taylor Jacovich, Daniel Patnaude, Patrick Slane, Carles Badenes, Shiu-Hang Lee, Shigehiro Nagataki, Dan Milisavljevic   +6 more
doaj   +1 more source

Molecules and dust in Cas A: I - Synthesis in the supernova phase and processing by the reverse shock in the clumpy remnant

, 2014
Aims: We study the chemistry of the Type IIb supernova ejecta that led to the Cas A supernova remnant to assess the chemical type and quantity of dust that forms and evolves in the remnant phase.
Biscaro, Chiara, Cherchneff, Isabelle
core   +1 more source