Results 21 to 30 of about 56,805 (216)
Scientific Reports, 2021 Impact ejecta formation and emplacement is of great importance when it comes to understanding the process of impact cratering and consequences of impact events in general. Here we present a multidisciplinary investigation of a distal impact ejecta layer,
Sanna Holm-Alwmark +10 more
doaj +1 more source
Evolutionary signatures in complex ejecta and their driven shocks [PDF]
Annales Geophysicae, 2004 We examine interplanetary signatures of ejecta-ejecta interactions. To this end, two time intervals of inner-heliospheric (≤1AU) observations separated by 2 solar cycles are chosen where ejecta/magnetic clouds are in the process of interacting to ...
C. J. Farrugia, D. B. Berdichevsky
doaj +1 more source
MAGNETOHYDRODYNAMIC EFFECTS IN RELATIVISTIC EJECTA [PDF]
International Journal of Modern Physics D, 2010 We study the problem of deceleration of an arbitrarily magnetized relativistic ejecta in a static unmagnetized medium and its connection to the physics of gamma-ray bursts (GRBs). By computing exact solutions of the Riemann problem describing this scenario, we find that with the same initial Lorentz factor, the reverse shock becomes progressively ...
YOSUKE MIZUNO +6 more
openaire +4 more sources
X-ray ejecta kinematics of the Galactic core-collapse supernova remnant G292.0+1.8 [PDF]
, 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
Forbush Decrease Characteristics in a Magnetic Cloud
Space Weather, 2020 Based on the new mechanism, the Forbush decrease characteristics are calculated for eight magnetic cloud types. It is shown that the Forbush decrease amplitude does not depend on the magnetic cloud type, while the anisotropy strongly does.
A. S. Petukhova +2 more
doaj +1 more source
The X-ray Iron Emission from Tycho's Supernova Remnant [PDF]
, 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
2D radiation-hydrodynamic simulations of supernova ejecta with a central power source [PDF]
, 2020 We present the results of two-dimensional radiation-hydrodynamic simulations of expanding supernova ejecta with a central energy source. As suggested in previous multi-dimensional hydrodynamic simulations, a sufficiently powerful central energy source can blow away the expanding supernova ejecta, leading to efficient mixing of stratified layers in the ...
arxiv +1 more source
Ejecta distribution from impact craters on Ryugu: possible origin of the bluer units [PDF]
Icarus Volume 364, August 2021, 114474, 2022 Asteroid (162173) Ryugu was the first spinning-top-shaped asteroid to be closely approached by a probe, the Hayabusa2 spacecraft, which sent numerous high-resolution images of Ryugu to the Earth and revealed the nature of this type of asteroid. One of the notable features of Ryugu is the equatorial ridge, which is considered the result of rapid spin in
arxiv +1 more source
Novae ejecta as colliding shells [PDF]
Astrophysics and Space Science, 2010 12 pages, 3 figures; Revised manuscript; Accepted for publication in Astrophysics & Space ...
Robert Williams, Elena Mason
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The Axisymmetric Ejecta of Supernova 1987A [PDF]
The Astrophysical Journal, 2002 Extensive early observations proved that the ejecta of supernova 1987A (SN 1987A) are aspherical. Fifteen years after the supernova explosion, the Hubble Space Telescope has resolved the rapidly expanding ejecta. The late-time images and spectroscopy provide a geometrical picture that is consistent with early observations and suggests a highly ...
Pun, CSJ +17 more
openaire +6 more sources