Results 131 to 140 of about 72,692 (306)

Ejecta Wakes from Companion Interaction in Type Ia Supernova Remnants

open access: yesThe Astrophysical Journal
Type Ia supernovae are triggered by accretion onto a white dwarf from a companion that is most likely Roche lobe–filling at the time of the explosion.
Logan J. Prust   +2 more
doaj   +1 more source

Circumstellar ejecta around LBV’s [PDF]

open access: yesInternational Astronomical Union Colloquium, 1989
Abstract The properties of circumstellar shells around LBV’s are reviewed. Some LBV’s are surrounded by very extended nebulosities, similar to classical planetary nebulae, with AG Car as the prototype. The masses of these nebulae are of the order of a solar mass and their kinematic ages are about 104 years.
openaire   +1 more source

0103-72.6: A New Oxygen-Rich Supernova Remnant in the Small Magellanic Cloud

open access: yes, 2003
0103$-$72.6, the second brightest X-ray supernova remnant (SNR) in the Small Magellanic Cloud (SMC), has been observed with the {\it Chandra X-Ray Observatory}.
David N. Burrows   +8 more
core   +1 more source

Effect of target properties and impact velocity on ejection dynamics and ejecta deposition

open access: yesMeteoritics and Planetary Science, 2018
Impact craters are formed by the displacement and ejection of target material. Ejection angles and speeds during the excavation process depend on specific target properties.
R. Luther   +3 more
semanticscholar   +1 more source

The dynamic ejecta of compact object mergers and eccentric collisions

open access: yes, 2012
Compact object mergers eject neutron-rich matter in a number of ways: by the dynamical ejection mediated by gravitational torques, as neutrino-driven winds and probably also a good fraction of the resulting accretion disc finally becomes unbound by a ...
Rosswog, S.
core   +1 more source

Estimating the Contribution of Dynamical Ejecta in the Kilonova Associated with GW170817

open access: yesThe Astrophysical Journal Letters, 2017
The source of the gravitational-wave (GW) signal GW170817, very likely a binary neutron star merger, was also observed electromagnetically, providing the first multi-messenger observations of this type.
B. P. Abbott   +1101 more
doaj   +1 more source

Simultaneous Detection of the Size and Velocity of the Largest Ejecta Particles with Velocities Exceeding 1 km s−1

open access: yesThe Planetary Science Journal
Impact ejecta with velocities exceeding the escape velocity of planetary bodies become meteorites and dust particles in interplanetary space. We present a new method that allows simultaneous measurement of the size and velocity of the largest high ...
Akiko M. Nakamura   +2 more
doaj   +1 more source

Impacts of hemispherical granular targets: Implications for global impacts [PDF]

open access: yes
As impact excavation diameters subtend a nontrivial fraction of a planetary body, both the excavation process and ejecta emplacement may depart form the classical description of impacts into a planar surface.
Crawford, D.   +2 more
core   +1 more source

Multiband Emission from Star–Disk Collisions and Implications for Quasiperiodic Eruptions

open access: yesThe Astrophysical Journal
We perform two-dimensional, multigroup radiation hydrodynamic simulations to explore the observational properties of a solar-like star colliding with an accretion disk around a supermassive black hole at a separation of ∼100 gravitational radii.
Xiaoshan Huang   +2 more
doaj   +1 more source

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