Results 41 to 50 of about 70,034 (292)
The Axisymmetric Ejecta of Supernova 1987A [PDF]
The Astrophysical Journal, 2002 Extensive early observations proved that the ejecta of supernova 1987A (SN 1987A) are aspherical. Fifteen years after the supernova explosion, the Hubble Space Telescope has resolved the rapidly expanding ejecta. The late-time images and spectroscopy provide a geometrical picture that is consistent with early observations and suggests a highly ...
Pun, CSJ +17 more
openaire +6 more sources
Stratigraphy of Ice and Ejecta Deposits at the Lunar Poles
Geophysical Research Letters, 2020 Water ice has been delivered to the lunar poles from different sources over billions of years, but this accumulation was punctuated by large impacts that excavated dry regolith from depth and emplaced it in layers over the poles.
K. Cannon, A. Deutsch, J. Head, D. Britt
semanticscholar +1 more source
Initial 40Ar‐39Ar Ages of the Paleocene‐Eocene Boundary Impact Spherules
Geophysical Research Letters, 2019 We report 40Ar‐39Ar step‐heating ages of Paleocene‐Eocene (P‐E) boundary impact spherules from Atlantic Margin coastal plain and open ocean sites. We test the hypothesis that the P‐E spherules are reworked from an earlier event (e.g., K‐Pg impact at ~66 ...
Morgan F. Schaller +4 more
doaj +1 more source
Infrared Ejecta and Cold Dust in the Young Supernova Remnant N132D
The Astrophysical Journal, 2023 We present Spitzer, Wide-field Infrared Survey Explorer (WISE), and Herschel observations of the young supernova remnant (SNR) N132D in the Large Magellanic Cloud, including 3–40 μ m Spitzer Infrared Spectrograph (IRS) mapping, 12 μ m WISE and 70, 100 ...
Jeonghee Rho +3 more
doaj +1 more source
Hydrodynamic modelling of ejecta shrapnel in the Vela supernova remnant [PDF]
, 2013 Many supernova remnants (SNRs) are characterized by a knotty ejecta structure. The Vela SNR is an excellent example of remnant in which detached clumps of ejecta are visible as X-ray emitting bullets that have been observed and studied in great detail ...
Bocchino, F. +4 more
core +2 more sources
Cosmic noise absorption signature of particle precipitation during interplanetary coronal mass ejection sheaths and ejecta [PDF]
Annales Geophysicae, 2020 We study here energetic-electron (E>30 keV) precipitation using cosmic noise absorption (CNA) during the sheath and ejecta structures of 61 interplanetary coronal mass ejections (ICMEs) observed in the near-Earth solar wind between 1997 and ...
E. Kilpua +13 more
doaj +1 more source
Trans-Ejecta High-Energy Neutrino Emission from Binary Neutron Star Mergers [PDF]
, 2018 The observations of a macronova/kilonova accompanied by gravitational waves from a binary neutron star merger (GW170817) confirmed that neutron star coalescences produce copious ejecta.
Bartos, Imre +5 more
core +2 more sources
Scientific Reports, 2019 Ejecta with a size much larger than the mean particle size of feedstock powder have been observed in powder bed fusion additive manufacturing, both during post-process sieving and embedded within built components.
A. Nassar +5 more
semanticscholar +1 more source
RADIOACTIVITY AND THERMALIZATION IN THE EJECTA OF COMPACT OBJECT MERGERS AND THEIR IMPACT ON KILONOVA LIGHT CURVES [PDF]
, 2016 One promising electromagnetic signature of compact object mergers are kilonovae: approximately isotropic radioactively powered transients that peak days to weeks post-merger.
J. Barnes +3 more
semanticscholar +1 more source
, 2020 High-speed impact ejecta at velocities comparable to the impact velocity are expected to contribute to material transport between planetary bodies and deposition of ejecta far from the impact crater.
Genda, Hidenori +3 more
core +1 more source