Results 121 to 130 of about 70,331 (294)

Modeling dynamical ejecta from binary neutron star mergers and implications for electromagnetic counterparts [PDF]

, 2016
In addition to the emission of gravitational waves (GWs) the coalescence and merger of two neutron stars will produce a variety of electromagnetic (EM) signals.
T. Dietrich, M. Ujevic
semanticscholar   +1 more source

Cooling History and Evolution Dynamics of Green Glass Beads During Lunar Fire‐Fountain Eruptions: Insights From Na, K and Cu Distributions

Journal of Geophysical Research: Planets, Volume 130, Issue 7, July 2025.
Abstract Volcanic glass beads on the Moon have traditionally been thought to only record volatile loss during pyroclastic eruptions. However, recent discoveries have shown that lunar orange glass beads, representing primitive high‐Ti basalts, experienced both outgassing and in‐gassing of volatile elements such as Na, K, Cu, and S.
Xue Su, Youxue Zhang, Yang Liu, Robert M. Holder   +3 more
wiley   +1 more source

The First Instrumentally Detected Hydrothermal Explosion in Yellowstone National Park

Geophysical Research Letters, Volume 52, Issue 11, 16 June 2025.
Abstract Hydrothermal explosions are one of the geological hazards most likely to impact people in Yellowstone National Park, but their frequency is poorly known. Infrasound and seismic sensors identified an explosion in Norris Geyser Basin on 15 April 2024, at 14:56 MDT (20:56 UTC)—the first instrumentally detected hydrothermal explosion in the ...
Michael P. Poland, Alexandra M. Iezzi, Jamie Farrell, R. Greg Vaughan   +3 more
wiley   +1 more source

The Innermost Ejecta of Core Collapse Supernovae [PDF]

Nuclear Physics A, 2005
We ensure successful explosions (of otherwise non-explosive models) by enhancing the neutrino luminosity via reducing the neutrino scattering cross sections or by increasing the heating efficiency via enhancing the neutrino absorption cross sections in the heating region.
Fröhlich, C, Hauser, P, Liebendörfer, M, Martínez, G, Bravo Guil, Eduardo, Hix, W R, Zinner, N T, Thielemann, F -K   +7 more
openaire   +5 more sources

Impact Ejecta and Gardening in the Lunar Polar Regions

Journal of Geophysical Research: Planets, 2019
The Moon is continually bombarded by interplanetary meteoroids. While many of the meteoroid sources are near the ecliptic plane, a significant population of high‐inclination meteoroids exists at 1 au that bombards the lunar polar regions.
J. Szalay, P. Pokorný, Z. Sternovsky, Z. Kupihar, A. Poppe, M. Horányi   +5 more
semanticscholar   +1 more source

The γ-rays that accompanied GW170817 and the observational signature of a magnetic jet breaking out of NS merger ejecta [PDF]

, 2017
We present the first relativistic MHD numerical simulation of a magnetic jet that propagates through and emerges from the dynamical ejecta of a binary neutron star merger.
O. Bromberg, A. Tchekhovskoy, O. Gottlieb, E. Nakar, T. Piran   +4 more
semanticscholar   +1 more source

X-Ray Emitting Ejecta of Supernova Remnant N132D

, 2007
The brightest supernova remnant in the Magellanic Clouds, N132D, belongs to the rare class of oxygen-rich remnants, about a dozen objects that show optical emission from pure heavy-element ejecta.
Beasley M., Kazimierz J. Borkowski, Sean P. Hendrick, Stephen P. Reynolds, Winkler P. F.   +4 more
core   +1 more source

Hypersonic Jets of Detonation Products in the Hydrodynamic Collapse of Macroscopic Voids

Propellants, Explosives, Pyrotechnics, Volume 50, Issue 6, June 2025.
Using machined mm‐scale voids at the surface of PBX 9501 samples, detonation‐driven jets of product gases form. We find that there is an optimal distance from the charge surface at which the energy transfer due to this jetting is maximized using witness plate impact experiments and hydrocode simulations.
Jason J. Wilkening, Gabriel A. Montoya, Alejandro Strachan, Steven F. Son   +3 more
wiley   +1 more source

The ejecta of η Carinae [PDF]

Proceedings of the International Astronomical Union, 2006
AbstractHigh-dispersion spectroscopic observations of the neutral Homunculus and the ionized Little Homunculus, ejecta of η Car, are being analyzed to determine the relative abundances of metals. Thousands of lines of neutral and singly-ionized metals and molecules seen in the Homunculus suggest that this oxygen-, carbon-poor, nitrogen-, helium-rich ...
openaire   +2 more sources

Fluidized Appearing Ejecta on Ceres: Implications for the Mechanical Properties, Frictional Properties, and Composition of its Shallow Subsurface

Journal of Geophysical Research: Planets, 2019
Several ejecta deposits on Ceres display morphological characteristics not commonly associated with dry ballistic emplacement. We characterized 30 examples of fluidized appearing ejecta (FAE) on Ceres and identified two distinct morphological populations:
K. Hughson, C. Russell, B. Schmidt, H. Chilton, H. Sizemore, P. Schenk, C. Raymond   +6 more
semanticscholar   +1 more source