Results 41 to 50 of about 72,692 (306)
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
X-ray ejecta kinematics of the Galactic core-collapse supernova remnant G292.0+1.8 [PDF]
, 2014 We report on the results from the analysis of our 114 ks Chandra HETGS observation of the Galactic core-collapse supernova remnant G292.0+1.8. To probe the 3D structure of the clumpy X-ray emitting ejecta material in this remnant, we measured Doppler ...
Bhalerao, Jayant +5 more
core +3 more sources
Geophysical Research Letters, 2012 Craters at many volcanoes, including most maars, are formed by multiple subsurface explosions. Experiments compared the crater formed by a single large, buried explosion, with craters formed by multiple explosions with the same cumulative energy ...
Greg A. Valentine +6 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
, 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
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
Synchrotron Radiation from the Fast Tail of Dynamical Ejecta of Neutron Star Mergers [PDF]
Astrophysical Journal, 2018 We find, using high-resolution numerical relativistic simulations, that the tail of the dynamical ejecta of neutron star mergers extends to mildly relativistic velocities faster than 0.7c. The kinetic energy of this fast tail is ∼1047–1049 erg, depending
K. Hotokezaka +4 more
semanticscholar +1 more source
Gas Dynamics of the Nickel-56 Decay Heating in Pair-Instability Supernovae [PDF]
, 2020 Very massive 140-260 Msun stars can die as highly-energetic pair-instability supernovae (PI SNe) with energies of up to 100 times those of core-collapse SNe that can completely destroy the star, leaving no compact remnant behind.
Chen, Ke-Jung +2 more
core +2 more sources
Atmospheric Interactions of Ejecta on Earth and Mars Including the Effect of Vaporization
The Planetary Science Journal, 2023 Atmospheres play an important role in ejecta deposition after an impact event. Many impact experiments and simulations neglect the effect of atmospheres.
M. A. Carlson +2 more
doaj +1 more source
Mass Loss From Planetary Nebulae in Elliptical Galaxies [PDF]
, 2009 Early-type galaxies possess a dilute hot (2-10E6 K) gas that is probably the thermalized ejecta of the mass loss from evolving stars. We investigate the processes by which the mass loss from orbiting stars interacts with the stationary hot gas for the ...
Athey +12 more
core +1 more source