Results 41 to 50 of about 56,805 (216)
AerospaceSafe landings are imperative to accomplish NASA’s Artemis goal to enable human exploration on the Moon, including sample collection missions. However, a process known as plume surface interaction (PSI) presents a significant hazard to lunar landings. PSI
Ariana Bueno +5 more
doaj +1 more source
Optical flashes and radio flares in GRB afterglows: Numerical study [PDF]
, 2000 We numerically study the evolution of an adiabatic relativistic fireball interacting with an ambient uniform medium, both in the initial energy transfer stage and in its late evolution.
Kobayashi, Shiho, Sari, Re'em
core +1 more source
Supernova ejecta with a relativistic wind from a central compact object: a unified picture for extraordinary supernovae [PDF]
, 2016 The hydrodynamical interaction between freely expanding supernova ejecta and a relativistic wind injected from the central region is studied in analytic and numerical ways. As a result of the collision between the ejecta and the wind, a geometrically thin shell surrounding a hot bubble forms and expands in the ejecta.
arxiv +1 more source
Ejecta transfer in the Pluto system [PDF]
Icarus, 2015 28 pages, 6 figures, accepted for publication in ...
William M. Grundy, Simon B. Porter
openaire +2 more sources
AerospaceRubble-pile asteroids may be the type of near-Earth object most likely to threaten Earth in a future collision event. Small-scale impact experiments and numerical simulations for large-scale impacts were conducted to clarify the size ratio of the boulder/
Wenjin Liu +7 more
doaj +1 more source
Primordial massive supernovae as the first molecular factories in the early universe [PDF]
Astrophys.J. 683 (2008) L123-L126, 2008 We study the ejecta chemistry of a zero-metallicity progenitor, massive, supernova using a novel approach based on chemical kinetics. Species considered span the range of simple, di-atomic molecules such as CO or SiO to more complex species involved in dust nucleation processes.
arxiv +1 more source
High-energy X-ray radiography investigation on the ejecta physics of laser shock-loaded tin
AIP Advances, 2019 This study is devoted to the high-energy X-ray radiography investigation on the ejecta physics of laser shock-loaded tin. The ejecta were generated via laser shock loaded tin under sequential shock-breakout pressures by high-power nanosecond lasers.
Weihua He +8 more
doaj +1 more source
Doppler Broadening and Line-of-sight Effects in Core-collapse Supernovae and Young Remnants
The Astrophysical Journal, 2023 The dynamics and spectral characteristics of supernova ejecta reveal details of the supernova energetics, explosive nucleosynthesis, and evolution of the progenitor.
Taylor Jacovich +6 more
doaj +1 more source
Infrared emission from kilonovae: the case of the nearby short hard burst GRB 160821B [PDF]
, 2017 We present constraints on Ks-band emission from one of the nearest short hard gamma-ray bursts, GRB 160821B, at z=0.16, at three epochs. We detect a reddened relativistic afterglow from the jetted emission in the first epoch but do not detect any excess ...
Fryer, Christopher L. +4 more
core +3 more sources
Supernova ejecta interacting with a circumstellar disk. I. two-dimensional radiation-hydrodynamic simulations [PDF]
, 2019 We perform a series of two-dimensional radiation-hydrodynamic simulations of the collision between supernova ejecta and circumstellar media (CSM). The hydrodynamic interaction of a fast flow and the surrounding media efficiently dissipates the kinetic energy of the fast flow and considered as a dominant energy source for a specific class of core ...
arxiv +1 more source