Results 121 to 130 of about 56,805 (216)

Compton degradation of gamma-ray line emission from radioactive isotopes in the classical nova V2491 Cygni

open access: yes, 2010
To account for the non-thermal emission from the classical nova V2491 Cygni, we perform a series of numerical calculations of radiative transfer of \gamma-ray photons from the radioactive isotope $^{22}$Na in the matter ejected from a white dwarf.
Coc   +21 more
core   +1 more source

Delivery of DART Impact Ejecta to Mars and Earth: Opportunity for Meteor Observations

open access: yesThe Planetary Science Journal
NASA’s Double Asteroid Redirection Test (DART) and ESA’s Hera missions offer a unique opportunity to investigate the delivery of impact ejecta to other celestial bodies. We performed ejecta dynamical simulations using 3 million particles categorized into
Eloy Peña-Asensio   +3 more
doaj   +1 more source

A secondary ejecta explanation of a lunar seismogram [PDF]

open access: green, 1970
Gee Kung Chang   +2 more
openalex   +1 more source

Probing Shocked Ejecta in SN 1987A: A Novel Diagnostic Approach Using XRISM-Resolve

open access: yesThe Astrophysical Journal Letters
Supernova (SN) 1987A is one of the best candidates to exploit the capabilities of the freshly launched XRISM satellite. This celestial object offers the unique opportunity to study the evolution of an SN into a young supernova remnant. To date, the X-ray
Vincenzo Sapienza   +12 more
doaj   +1 more source

Eruption products of the 1883 eruption of Krakatau and their final settlement

open access: yesAnnals of Geophysics, 2015
Firstly the volume of pyroclastic ejecta during the 1883 eruption of Krakatau is re-examined. To revise the volume of flow deposits, the author basically follows Verbeek’s observation while to estimate the fall deposits, as the last resort, the author ...
Izumi Yokoyama
doaj   +1 more source

Recent VLBI Results on SN 1986J and the Possibility of FRBs Originating from Inside the Expanding Ejecta of Supernovae [PDF]

open access: yesarXiv, 2019
We discuss our VLA and VLBI observations of supernova 1986J, which is characterized by a compact radio-bright component within the expanding shell of ejecta. No other supernova (SN) has such a central component at cm wavelengths. The central component therefore provides a unique probe of the propagation of radio signals at cm wavelengths through the ...
arxiv  

5.8 Lunar Ejecta in Heliocentric Space [PDF]

open access: bronze, 1976
W. M. Alexander, Mark A. Richards
openalex   +1 more source

Origin of α-poor Very Metal-poor Stars

open access: yesThe Astrophysical Journal
Among very metal-poor (VMP) stars, α -poor VMP ( α -PVMP) stars that have subsolar values of [X/Fe] for Mg and other α elements are rare and are thought to have been formed from gas polluted by Type 1a supernova (SN 1a). However, recent analyses indicate
S. K. Jeena, Projjwal Banerjee
doaj   +1 more source

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