Results 11 to 20 of about 50,731 (225)

The Osmium Isotope Signature of Phanerozoic Large Igneous Provinces

open access: yesGeophysical Monograph Series, Page 229-246., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Alexander J. Dickson   +2 more
wiley  

+2 more sources

Constraint on the ejecta mass for a black hole-neutron star merger event candidate S190814bv [PDF]

open access: yes, 2020
We derive the upper limit to the ejecta mass of S190814bv, a black hole-neutron star merger candidate, through the radiative transfer simulations for kilonovae with the realistic ejecta density profile as well as the detailed opacity and heating rate ...
Kawaguchi, Kyohei   +2 more
core   +2 more sources

The X-ray Iron Emission from Tycho's Supernova Remnant [PDF]

open access: yes, 1997
We present the results of broadband fits to the X-ray spectrum of Tycho's supernova remnant obtained by the Solid-State Imaging Spectrometers on the ASCA Observatory.
Albinson J. S.   +8 more
core   +2 more sources

XMM-Newton Large Program on SN1006 - II: Thermal Emission [PDF]

open access: yes, 2016
Based on the XMM-Newton large program on SN1006 and our newly developed spatially resolved spectroscopy tools (Paper~I), we study the thermal emission from ISM and ejecta of SN1006 by analyzing the spectra extracted from 583 tessellated regions dominated
Bocchino, Fabrizio   +4 more
core   +5 more sources

X-ray ejecta kinematics of the Galactic core-collapse supernova remnant G292.0+1.8 [PDF]

open access: yes, 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

Gas Dynamics of the Nickel-56 Decay Heating in Pair-Instability Supernovae [PDF]

open access: yes, 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

Initial 40Ar‐39Ar Ages of the Paleocene‐Eocene Boundary Impact Spherules

open access: yesGeophysical 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

Experimental craters formed by single and multiple buried explosions and implications for volcanic craters with emphasis on maars

open access: yesGeophysical 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

Impact Ejecta near the Impact Point Observed using Ultra-high-speed Imaging and SPH Simulations, and a Comparison of the Two Methods

open access: yes, 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]

open access: yes, 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

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