Results 91 to 100 of about 17,020 (222)
, 2023 Supernova remnants interacting with molecular/atomic clouds are interesting X-ray sources to study nonthermal emission. X-ray emission in these systems can be produced by different processes, e.g.
Roberta Giuffrida +7 more
core
14. Pseudomyrma ejecta. Worker. Length 1 1/2 line.-Rufo-testaceous, smooth and shining: the head, hinder part of the thorax, femora and tibiae, darker-coloured; abdomen blackish-brown; the thorax strangulated in the middle, the first node of the petiole subelongate, a minute tooth at the base of the petiole beneath, both the nodes rufo-testaceous; the ...
openaire +2 more sources
The Planetary Science JournalImpact 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
Crater Ejecta Deposition on Ceres
, 2016 Since March 6 2015 the Dawn spacecraft (Russell et al., 2012) is orbiting the dwarf planet Ceres inside the asteroid main belt. Color ratio data of the Framing Camera instrument show distinct bluish characteristics of recently exposed materials such as ...
Otto, Katharina +9 more
core
Multiband Emission from Star–Disk Collisions and Implications for Quasiperiodic Eruptions
The Astrophysical JournalWe 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
Fast dynamic ejecta in neutron star mergers [PDF]
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
Type Iax Supernovae as a Source of Iron-rich Silicate Dust
The Astrophysical JournalWe 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
, 2012 A significant portion of the Solar System's population of minor bodies may be quite porous. A unique aspect of crater formation in porous bodies is that large craters may form without the ejecta deposits that are associated with craters on less porous ...
Housen, Kevin R., Holsapple, Keith A.
core
Orbital Capture of Ejecta into Periodic Orbits around Binary Asteroid (65803) Didymos
The Planetary Science JournalThe 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
Simulated 3D 56Ni Distributions of Type IIp Supernovae
The Astrophysical JournalWe 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