Results 61 to 70 of about 371,767 (221)
Recent Astrophysics Results from ORELA and Possible Future Experiments at ORELA and SNS [PDF]
I present some recent results from experiments at the Oak Ridge Electron Linear Accelerator (ORELA) and discuss their impact in nuclear astrophysics. I then describe some possible future nuclear astrophysics experiments at ORELA and at the Spallation Neutron Source (SNS) being built in Oak Ridge.
arxiv +1 more source
Short Wavelength Limit of the Dynamic Matsubara Local Field Correction
ABSTRACT We investigate the short wavelength limit of the dynamic Matsubara local field correction G˜q,zl$$ \tilde{G}\left(\mathbf{q},{z}_l\right) $$ of the uniform electron gas based on direct ab initio path integral Monte Carlo (PIMC) results over an unprecedented range of wavenumbers, q≲20qF$$ q\lesssim 20{q}_{\mathrm{F}} $$, where qF$$ {q}_{\mathrm{
Tobias Dornheim+3 more
wiley +1 more source
Martian marvels, a gamma-ray burster with a redshift, Galileo converses with Ganymede, a record galactic redshift of 4.92, and much else. Fiscal 1997 was definitely an exciting year for astronomers. We have tried hard to hit all the obvious highlights, but also to report more gradual progress on traditional problems of understanding planets, stars ...
Trimble, Virginia, McFadden, Lucy‐Ann
openaire +2 more sources
ABSTRACT Under the extreme conditions found in small stars, where electron degeneracy and Coulomb coupling are significant, accurate modeling of Thomson scattering is crucial for determining opacity, a primary quantity for stellar energy transport.
Samuel Schumacher+8 more
wiley +1 more source
From Alpha (Orionis and the parameter in mixing-length theory) to Omega (Centauri and the density of the universe), the Greeks had a letter for it. In between, we look at the Sun and planets, some very distant galaxies and nearby stars, neutrinos, gamma rays, and some of the anomalies that arise in a very large universe being studied by roughly one ...
Trimble, Virginia, Aschwanden, Markus
openaire +2 more sources
The Source of Turbulence in Astrophysical Disks: An Ill-posed Problem. [PDF]
An critical overview of the current state of research in turbulence in astrophysical disks.
arxiv
Electromotive field in space and astrophysical plasmas [PDF]
The concept of electromotive field appears in various applications in space and astrophysical plasmas. A review is given on the electromotive field highlighting our current understanding of the theoretical picture and the spacecraft observations in interplanetary space. The electromotive field is a key concept to successfully close the set of turbulent
arxiv +1 more source
Open issues in neutrino astrophysics [PDF]
Neutrinos of astrophysical origin are messengers produced in stars, in explosive phenomena like core-collapse supernovae, in the accretion disks around black holes, or in the Earth's atmosphere. Their fluxes and spectra encode information on the environments that produce them.
arxiv +1 more source
Summary Talk: Challenges in Particle Astrophysics [PDF]
A summary of the session on Particle Astrophysics at the Rencontre de Vietnam, 2006.
arxiv
VHE astrophysics: recent developments [PDF]
We review the current status, and some open issues, of VHE astrophysics.
arxiv