Results 91 to 100 of about 50,731 (225)

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

Styles of ejecta emplacement under atmospheric conditions [PDF]

open access: yes
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   +1 more source

Interaction of Supernova Ejecta with Nearby Protoplanetary Disks

open access: yes, 2007
The early Solar System contained short-lived radionuclides such as 60Fe (t1/2 = 1.5 Myr) whose most likely source was a nearby supernova. Previous models of Solar System formation considered a supernova shock that triggered the collapse of the Sun's ...
Bedogni R.   +7 more
core   +2 more sources

Discovery of X-Ray-Emitting O-Ne-Mg-Rich Ejecta in the Galactic Supernova Remnant Puppis A

open access: yes, 2010
We report on the discovery of X-ray--emitting O-Ne-Mg-rich ejecta in the middle-aged Galactic O-rich supernova remnant Puppis A with Chandra and XMM-Newton.
Hwang, Una   +5 more
core   +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

The Binary Neutron Star event LIGO/VIRGO GW170817 a hundred and sixty days after merger: synchrotron emission across the electromagnetic spectrum

open access: yes, 2018
We report deep Chandra, HST and VLA observations of the binary neutron star event GW170817 at ...
Alexander, K. D.   +19 more
core   +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

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

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

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