Results 31 to 40 of about 72,692 (306)
Comparison of Topographic Roughness of Layered Deposits on Mars
Remote Sensing, 2023 Impact craters with layered ejecta deposits are widespread on Mars. Prevailing views suggest that such ejecta were formed due to the involvement of target water and/or water ice in the impact excavation and/or the post-deposition movement of the impact ...
Wei Cao +4 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
XMM-Newton Large Program on SN1006 - II: Thermal Emission [PDF]
, 2016 Based on the XMM-Newton large program on SN1006 and our newly developed spatially resolved spectroscopy tools (Paper~I), we study the thermal emission from ISM and ejecta of SN1006 by analyzing the spectra extracted from 583 tessellated regions dominated
Bocchino, Fabrizio +4 more
core +5 more sources
Element Abundances in the Unshocked Ejecta of Cassiopeia A [PDF]
Astrophysical Journal, 2020 We analyze and model the infrared spectrum of the Cassiopeia A supernova remnant with the aim of determining the masses of various elements in the unshocked ejecta.
T. Temim
semanticscholar +1 more source
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
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
Shock within a shock: revisiting the radio flares of NS merger ejecta and gamma-ray burst-supernovae [PDF]
, 2020 Fast ejecta expelled in binary neutron star (NS) mergers or energetic supernovae (SNe) should produce late-time synchrotron radio emission as the ejecta shocks into the surrounding ambient medium.
B. Margalit, T. Piran
semanticscholar +1 more source
Stratigraphy of Ice and Ejecta Deposits at the Lunar Poles
Geophysical Research Letters, 2020 Water ice has been delivered to the lunar poles from different sources over billions of years, but this accumulation was punctuated by large impacts that excavated dry regolith from depth and emplaced it in layers over the poles.
K. Cannon, A. Deutsch, J. Head, D. Britt
semanticscholar +1 more source
Constraints on the ejecta of the GW170817 neutron star merger from its electromagnetic emission [PDF]
Monthly notices of the Royal Astronomical Society, 2017 We present a simple analytic model, that captures the key features of the emission of radiation from material ejected by the merger of neutron stars (NS), and construct the multi-band and bolometric luminosity light curves of the transient associated ...
E. Waxman +3 more
semanticscholar +1 more source