Results 111 to 120 of about 70,331 (294)

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

open access: yesThe 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   +6 more
doaj   +1 more source

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

open access: yesComptes 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   +10 more
doaj   +1 more source

The Three-Dimensional Structure of Cassiopeia A [PDF]

open access: yes, 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.   +11 more
core   +3 more sources

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

open access: yesJournal 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   +3 more
wiley   +1 more source

Impact of ejecta morphology and composition on the electromagnetic signatures of neutron star mergers [PDF]

open access: yes, 2017
The electromagnetic transients accompanying compact binary mergers (gamma-ray bursts, after-glows and 'macronovae') are crucial to pinpoint the sky location of gravitational wave sources.
R. Wollaeger   +9 more
semanticscholar   +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

open access: yesGeophysical 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   +5 more
doaj   +1 more source

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

open access: yesEPJ 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

Properties of Neutrino-driven Ejecta from the Remnant of a Binary Neutron Star Merger: Pure Radiation Hydrodynamics Case [PDF]

open access: yes, 2017
We performed general relativistic, long-term, axisymmetric neutrino radiation hydrodynamics simulations for the remnant formed after a binary neutron star merger, which consists of a massive neutron star and a torus surrounding it.
S. Fujibayashi   +3 more
semanticscholar   +1 more source

Mega-ejecta on asteroid Vesta [PDF]

open access: yesGeophysical Research Letters, 2011
[1] Asteroid 4 Vesta, sometimes called the “smallest terrestrial planet”, will be orbited next July by NASA's Dawn mission. This will be the first time a small planet is visited by a spacecraft, and novel geological structures are expected. A key issue regarding Vesta (mean diameter 530 km) is to what extent its geology is dominated by the ∼460 km ...
Martin Jutzi, Erik Asphaug
openaire   +2 more sources

Modelling Surtseyan Ejecta [PDF]

open access: yes, 2021
<p>Surtseyan ejecta are formed in shallow sub-aqueous volcanic eruptions. They occur when water, containing a slurry of previously erupted material, is washed into the volcanic vent. This slurry is incorporated into the magma and ejected from the volcano inside a ball of magma. These magma bombs containing entrained material are called, Surtseyan
openaire   +2 more sources

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