Results 51 to 60 of about 53,459 (199)

Nucleosynthesis in dynamical and torus ejecta of compact binary mergers

, 2015
We present a comprehensive study of r-process element nucleosynthesis in the ejecta of compact binary mergers (CBMs) and their relic black-hole (BH)-torus systems.
Bauswein, Andreas, Goriely, Stephane, Janka, H. -Thomas, Just, Oliver, Pulpillo, Ricard Ardevol   +4 more
core   +1 more source

Deep Learning‐Based Automated Segmentation of Layered Crater Ejecta on Mars

Journal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 3, September 2025.
Abstract Layered crater ejecta (LCE) with fluidization on Mars is generally believed to be related to the near‐surface ice‐bearing deposits. The improvement in the resolution of planetary image data has led to the discovery of more and more LCE, providing support for further research on the formation and geological significance of layered ejecta ...
Xiaoqi He, Shichao Li, Perry Xiao, Zheren Zhao, Hongtao Wang, Weian Wang   +5 more
wiley   +1 more source

The Three-Dimensional Expansion of the Ejecta from Tycho's Supernova Remnant

, 2017
We present the first three-dimensional measurements of the velocity of various ejecta knots in Tycho's supernova remnant, known to result from a Type Ia explosion.
Blondin, John M., Borkowski, Kazimierz J., Coyle, Nina M., Depasquale, Joseph, Ghavamian, Parviz, Hewitt, John W., Petre, Robert, Reynolds, Stephen P., Seitenzahl, Ivo R., Williams, Brian J., Yamaguchi, Hiroya   +10 more
core   +1 more source

The Influence of Interior Structure and Thermal State on Impact Melt Generation Upon Large Impacts Onto Terrestrial Planets

Journal of Geophysical Research: Planets, Volume 130, Issue 7, July 2025.
Abstract We investigate the melt production of planetary impacts as a function of planet size (R/REarth $R/{R}_{\text{Earth}}$ = 0.1–1.5), impactor size (L $L$ = 1–1,000 km), and core size ratio (Rcore/R ${R}_{\text{core}}/R$ = 0.2–0.8) using a combination of parameterized convection models and fully dynamical 2D impact simulations.
Lukas Manske, Thomas Ruedas, Ana‐Catalina Plesa, Philipp Baumeister, Nicola Tosi, Natalia Artemieva, Kai Wünnemann   +6 more
wiley   +1 more source

Near-IR Spectral Observations of the Didymos System: Daily Evolution Before and After the DART Impact Indicates that Dimorphos Originated from Didymos

The Planetary Science Journal, 2023
Ejecta from Dimorphos following the DART mission impact significantly increased the brightness of the Didymos–Dimorphos system, allowing us to examine subsurface material.
David Polishook, Francesca E. DeMeo, Brian J. Burt, Cristina A. Thomas, Andrew S. Rivkin, Juan A. Sanchez, Vishnu Reddy   +6 more
doaj   +1 more source

Linking a distal ejecta with its source crater: a probabilistic approach applied to tektites

Comptes Rendus. Géoscience, 2023
We propose a probabilistic approach to gauge the plausibility of a genetic link between a distal ejecta and a known impact structure, considering the only possible alternative that the distal ejecta could originate from an unknown impact site.
Rochette, Pierre, Baratoux, David, Braucher, Regis, Cornec, Jean, Debaille, Vinciane, Devouard, Bertrand, Gattacceca, Jerome, Gounelle, Matthieu, Jourdan, Fred, Moustard, Fabien, Nomade, Sébastien   +10 more
doaj   +1 more source

The Three-Dimensional Structure of Cassiopeia A [PDF]

, 2009
We used the Spitzer Space Telescope's Infrared Spectrograph to map nearly the entire extent of Cassiopeia A between 5-40 micron. Using infrared and Chandra X-ray Doppler velocity measurements, along with the locations of optical ejecta beyond the forward
Allen, Glenn E., Davis, J. E., DeLaney, Tracey, Gomez, Haley, Houck, J. C., Isensee, Karl, Kozasa, Takashi, Reach, William T., Rho, Jeonghee, Rudnick, Lawrence, Smith, J. D., Stage, M. D.   +11 more
core   +3 more sources

Scour Pits in the Medusae Fossae Formation and Olympus Mons Region on Mars

Journal of Geophysical Research: Planets, Volume 130, Issue 7, July 2025.
Abstract The Medusae Fossae Formation (MFF) covers a region of Mars located to the southwest of the Olympus Mons shield volcano. The nature of this formation has been under debate for over 30 years. In order to better understand the MFF, we investigated scour pits or V‐shaped depressions carved into many places across the MFF.
Santa L. Pérez‐Cortés, Ali M. Bramson, Christina M. Sowinski, Mackenzie Day   +3 more
wiley   +1 more source

Chronology, Local Stratigraphy, and Foreign Ejecta Materials at the Chang'e‐6 Landing Site: Constraints on the Provenance of Samples Returned From the Moon's Farside

Geophysical Research Letters
China's Chang'e‐6 (CE‐6) mission has returned the first‐ever lunar farside samples from a mare plain on the southern Apollo basin floor. The crater statistics of the CE‐6 mare unit and the provenance of the samples are crucial in interpreting the CE‐6 ...
Luyuan Xu, Le Qiao, Minggang Xie, Yiran Wang, Meng‐Hua Zhu, Jianguo Yan   +5 more
doaj   +1 more source

Effect of impact angles on ejecta and crater shape of aluminum alloy 6061-T6 targets in hypervelocity impacts

EPJ Web of Conferences, 2012
The effect of the impact angle of projectiles on the crater shape and ejecta in thick aluminum alloy targets was investigated in hypervelocity impacts.
Hayashi K., Nishida M., Ito Y.
doaj   +1 more source