Results 71 to 80 of about 17,030 (240)

Effect of Background Magnetic Field on Ion Weibel Instability With High‐Intensity Short‐Pulse Lasers

open access: yesContributions to Plasma Physics, EarlyView.
ABSTRACT The effect of finite background magnetic field on magnetic field amplification by Weibel instability using high‐intensity short‐pulse lasers is investigated. We consider Weibel instability for counter‐streaming sub‐relativistic plasma flows generated by shooting pure carbon targets with short‐pulse lasers.
Taiki Jikei   +3 more
wiley   +1 more source

SNO and supernovae [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 2001
The Sudbury Neutrino Observatory (SNO) has unique capabilities as a supernova detector. In the event of a galactic supernova there are opportunities, with the data that SNO would collect, to constrain certain intrinsic neutrino properties significantly, to test details of the various models of supernova dynamics, and to provide prompt notification to ...
openaire   +3 more sources

Gamma-Ray Bursts: The Energy Monsters of the Universe

open access: yesGalaxies
Gamma-Ray Bursts(GRBs) are the most violent and energetic astrophysical phenomena, which I dare call “the Energy Monsters of the Universe”. Indeed, they show an enormous emitted isotropic energy ranging from ∼3 × 1046 erg (GRB 170817A) to ∼1055 erg (GRB ...
Franco Giovannelli
doaj   +1 more source

Gold(I) Phosphine/Phosphido‐Borohydride Complexes

open access: yesEuropean Journal of Inorganic Chemistry, Accepted Article.
A homologous series of linear, mononuclear gold(I) phosphine/phosphido‐borohydride complexes, encompassing [Au(PR3)2]+ 1, [Au(PR3)(PR2BH3)] 2 and [Au(PR2BH3)2]– 3 (R = tBu, Ad), has been prepared and structurally characterised. Strong intramolecular dispersion interactions are evident in the complexes with Ad‐substituted ligands, which adopt eclipsed ...
Matthew J. G. Sinclair   +3 more
wiley   +1 more source

PHYSICS OF SUPERNOVAE

open access: yesInternational Journal of Modern Physics A, 2005
The origin of cosmic rays (CR) is supposed to be closely connected with supernovae (SNe) which create the conditions favorable for various mechanisms of the CR acceleration to operate effectively. First, modern ideas about the physics of the SN explosion are briefly discussed: the explosive thermonuclear burning in degenerate white dwarfs resulting in
V. S. Imshennik, D. K. Nadyozhin
openaire   +3 more sources

EXPLOSIVE NUCLEOSYNTHESIS AT STRONG STELLAR MAGNETIZATION

open access: yesOdessa Astronomical Publications, 2014
Synthesis of iron group nuclides is considered for the ultra-magnetized astrophysical plasma in supernovae. Magnetic modification of nuclear structure is shown to shift maximum of nucleosynthesis products towards smaller mass numbers enhancing titanium ...
V. N. Kondratyev, Yu. V. Korovina
doaj   +1 more source

Phosphazene Base Mediated (sp3)C–H Functionalization with CO2 and CS2

open access: yesEuropean Journal of Inorganic Chemistry, Accepted Article.
The activation of weakly acidic (sp³)C–H bonds in substrates such as fluoroform (HCF3), perfluoroethane (HC2F5), and acetonitrile (H3CCN) remains a fundamental challenge in synthetic chemistry. We report that the phosphazene base {(Et2N)3P=N}3P=NtBu (EtP4) enables the selective deprotonation of these molecules when combined with electrophilic small ...
Katharina Wels   +4 more
wiley   +1 more source

Revealing the True Nature of Hen 2-428

open access: yesGalaxies, 2018
The nucleus of Hen 2-428 is a short orbital period (4.2 h) spectroscopic binary, whose status as potential supernovae type Ia progenitor has raised some controversy in the literature.
Nicole Reindl   +7 more
doaj   +1 more source

Identifying the True Catalyst: A Mn(II) Salt versus Mn(II) Complexes in Epoxidation with m‐Chloroperbenzoic Acid

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
During the investigation of the reactivity of three Mn complexes, Mn(ClO4)2 shows higher reactivity toward styrene epoxidation, indicating that ligand coordination inhibits the reactivity of the manganese center. Raman spectroscopy provides mechanistic insight: monitoring alkene epoxidation and consumption of the oxidant over time, the true nature of ...
Milica Savić   +7 more
wiley   +1 more source

Magnetorotational supernovae

open access: yesMonthly Notices of the Royal Astronomical Society, 2005
Revised version.
N. V. Ardeljan   +2 more
openaire   +2 more sources

Home - About - Disclaimer - Privacy