Results 101 to 110 of about 12,699 (236)

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

Styles of ejecta emplacement under atmospheric conditions

open access: yes, 1991
Laboratory experiments provide essential first-order constraints on processes affecting ballistic ejecta and styles of ejecta emplacement under different atmospheric environments at planetary scales.
Schultz, P. H.
core  

The formation of fluidized ejecta on Mars by granular flows

open access: yes, 2006
From the proceedings of the Workshop on the Role of Volatiles and Atmospheres on Martian Impact Craters held on July 11-14, 2005, at the Johns Hopkins University Applied Physics Laboratory.A simple granular flow model is used to investigate some of the ...
Barnouin-Jha, Olivier S., Wada, Koji
core   +1 more source

A precambrian proximal ejecta blanket from Scotland

open access: yes, 2008
Ejecta blankets around impact craters are rarely preserved on Earth. Although impact craters are ubiquitous on solid bodies throughout the solar system, on Earth they are rapidly effaced, and few records exist of the processes that occur during ...
Hesselbo, Stephen   +9 more
core   +1 more source

Orbital Capture of Ejecta into Periodic Orbits around Binary Asteroid (65803) Didymos

open access: yesThe Planetary Science Journal
The successful impact of the Double Asteroid Redirection Test (DART) spacecraft on Dimorphos enabled the first-ever extensive observation of a postimpact ejecta tail from a binary asteroid system.
Xiaoyu Fu   +28 more
doaj   +1 more source

SN1987A at 18 Years: Ejecta-Ring Interaction

open access: yes, 2006
International audienceAfter 18 years the outer parts of the ejecta of SN1987A are interacting with the inner ring. This ejecta-ring interaction is the source of most of the activity associated with the supernova.
de Buizer, I. James M.   +8 more
core   +1 more source

Type Iax Supernovae as a Source of Iron-rich Silicate Dust

open access: yesThe Astrophysical Journal
We model the formation of dust in the ejecta of Type Iax supernovae (SNe), which is a low-luminosity subclass of Type Ia SNe. A nonequilibrium chemical kinetic approach is adopted to trace the synthesis of molecules, molecular clusters, and dust grains ...
Aman Kumar, Arkaprabha Sarangi
doaj   +1 more source

Simulated 3D 56Ni Distributions of Type IIp Supernovae

open access: yesThe Astrophysical Journal
We present the first three-dimensional study of the asymptotic ejecta distributions for a suite of theoretical Type IIp supernovae originating from red supergiant (RSG) progenitors.
David Vartanyan   +6 more
doaj   +1 more source

Radiative Transfer Modeling of Stripped-envelope Supernovae. I. A Grid for Ejecta Parameter Inference

open access: yesThe Astrophysical Journal
We present 1800 multiwavelength Type Ib/c supernovae light-curve models obtained by running the radiation transport code Sedona and varying the mass distribution, velocity profile, and abundance ejecta profiles of helium star progenitors.
S. Karthik Yadavalli   +5 more
doaj   +1 more source

Fast dynamic ejecta in neutron star mergers

open access: yes
The ejection of neutron-rich matter is one of the most important consequences of a neutron star merger. While the bulk of the matter is ejected at fast, but non-relativistic velocities (similar to 0.2c), a small amount of mildly relativistic dynamic ...
Diener, Peter   +7 more
core   +1 more source

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