Results 31 to 40 of about 70,034 (292)

The X-ray Iron Emission from Tycho's Supernova Remnant [PDF]

open access: yes, 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

Shocked quartz in distal ejecta from the Ries impact event (Germany) found at ~ 180 km distance, near Bernhardzell, eastern Switzerland

open access: yesScientific 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

MAGNETOHYDRODYNAMIC EFFECTS IN RELATIVISTIC EJECTA [PDF]

open access: yesInternational 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

GRB 060206: hints of precession of the central engine? [PDF]

open access: yes, 2008
Aims. The high-redshift (z=4.048) gamma-ray burst GRB 060206 showed unusual behavior, with a significant rebrightening by a factor of ~4 at about 3000 s after the burst. We argue that this rebrightening implies that the central engine became active again
Liu, X. W., Lu, T., Wu, X. F.
core   +2 more sources

Shock within a shock: revisiting the radio flares of NS merger ejecta and gamma-ray burst-supernovae [PDF]

open access: yes, 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

XMM-Newton Large Program on SN1006 - II: Thermal Emission [PDF]

open access: yes, 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   +4 more sources

Forbush Decrease Characteristics in a Magnetic Cloud

open access: yesSpace 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

Novae ejecta as colliding shells [PDF]

open access: yesAstrophysics and Space Science, 2010
12 pages, 3 figures; Revised manuscript; Accepted for publication in Astrophysics & Space ...
Robert Williams, Elena Mason
openaire   +4 more sources

X-ray ejecta kinematics of the Galactic core-collapse supernova remnant G292.0+1.8 [PDF]

open access: yes, 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

Atmospheric Interactions of Ejecta on Earth and Mars Including the Effect of Vaporization

open access: yesThe Planetary Science Journal, 2023
Atmospheres play an important role in ejecta deposition after an impact event. Many impact experiments and simulations neglect the effect of atmospheres.
M. A. Carlson   +2 more
doaj   +1 more source

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