Results 61 to 70 of about 2,169 (225)

A Theory for Neutron Star and Black Hole Kicks and Induced Spins

open access: yesThe Astrophysical Journal
Using 20 long-term 3D core-collapse supernova simulations, we find that lower compactness progenitors that explode quasi-spherically due to the short delay to explosion experience smaller neutron star recoil kicks in the ∼100−200 km s ^−1 range, while ...
Adam Burrows   +3 more
doaj   +1 more source

Supernova Dynamics and Explosive Nucleosynthesis

open access: yesJournal of Physics: Conference Series, 2012
Nuclear physics plays a crucial role in various aspects of core collapse supernovae. The collapse dynamic is strongly influenced by electron captures. Using modern many-body theory improved capture rates have been derived recently with the important result that the process is dominated by capture on nuclei until neutrino trapping is achieved. Following
openaire   +1 more source

Supernova kicks and dynamics of compact remnants in the Galactic Centre [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2017
12 pages, 9 figures, 4 tables; accepted for publication in ...
Bortolas E., Mapelli M., Spera M.
openaire   +4 more sources

Synthesis and Characterization of the Molybdenum Carbonyl‐Functionalized Zintl Ions [(η4‐Pb4)Mo(CO)3]4− and [Pb4{Mo(CO)3}3]6−

open access: yesZeitschrift für anorganische und allgemeine Chemie, EarlyView.
The reaction of the tetrahedral [Pb4]4− with Mo(CO)4(tmeda) yields two different Mo(CO)3‐functionalized clusters which can both be related to known clusters by the same substitution pattern following the isolobal principle. The crystal structures of [Na([2.2.2]crypt)]2Na2[(η4‐Pb4)Mo(CO)3] · 8.7NH3 and Na6[Pb4{Mo(CO)3}3] · 22NH3 are reported.
Michael Witzmann, Nikolaus Korber
wiley   +1 more source

Dynamical evolution of a supernova driven turbulent interstellar medium [PDF]

open access: yesProceedings of the International Astronomical Union, 2006
AbstractIt is shown that a number of key observations of the Galactic ISM can be understood, if it is treated as a highly compressible and turbulent medium, energized predominantly by supernova explosions (and stellar winds). We have performed extensive numerical high resolution 3D hydrodynamical and magnetohydrodynamical simulations with adaptive mesh
Breitschwerdt, Dieter   +1 more
openaire   +3 more sources

On the Destruction and Humanitarianisation of the Health System in Gaza and the Need for a Biopolitical Bioethics

open access: yesBioethics, EarlyView.
ABSTRACT This paper examines Israel's destruction and ‘humanitarianisation’ of Palestinian health systems, arguing that this should be understood as an instance of ‘necropolitics,’ as conceived by Achille Mbembe. We review the extensive, long‐term destruction of health systems in Palestine before 7 October 2023 and the catastrophic acceleration of that
Mohammad Salaymeh   +2 more
wiley   +1 more source

Instabilities elucidate dynamics of supernovae blasts

open access: yesScilight, 2023
Group theory approach examines how fluid instabilities intensively mix materials as stars explode.
openaire   +1 more source

Evolution of the first supernovae in protogalaxies: Dynamics of mixing of heavy elements [PDF]

open access: yesAstronomy Reports, 2012
The paper considers the evolution of the supernova envelopes produced by Population III stars with masses of $M_*\sim 25-200 M_\odot$ located in non-rotating protogalaxies with masses of $M\sim 10^7 M_\odot$ at redshifts $z=12$, with dark-matter density profiles in the form of modified isothermal spheres.
Vasiliev, E. O.   +4 more
openaire   +3 more sources

The Impact of Progenitor Mass Loss on the Dynamical and Spectral Evolution of Supernova Remnants [PDF]

open access: yes, 2017
There is now substantial evidence that the progenitors of some core-collapse supernovae undergo enhanced or extreme mass loss prior to explosion. The imprint of this mass loss is observed in the spectra and dynamics of the expanding blast wave on ...
Shigehiro Nagataki   +13 more
core   +1 more source

Constraining the Onset Density for the QCD Phase Transition with the Neutrino Signal from Core-collapse Supernovae

open access: yesThe Astrophysical Journal
The occurrence of a first-order hadron–quark matter phase transition at high baryon densities is investigated in astrophysical simulations of core-collapse supernovae, to decipher yet incompletely understood properties of the dense matter equation of ...
Noshad Khosravi Largani   +2 more
doaj   +1 more source

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