搜索结果: 1-13 共查到“天体物理学 the electron”相关记录13条 . 查询时间(0.036 秒)
Space-time variation of the electron-to-proton mass ratio in a Weyl model
Space-time variation the electron-to-proton mass ratio
2011/1/13
We consider a phenomenological model where the effective fermion masses depend on the local value of Weyl tensor as a possible explanation for the recent data indicating a space-time variation of the...
A possible approach to three-dimensional cosmic-ray propagation in the Galaxy IV. Electrons and electron-induced gamma-rays
three-dimensional cosmic-ray propagation the Galaxy IV. Electrons
2011/1/11
Based on the diffusion-halo model for cosmic-ray (CR) propagation, including stochastic reacceleration due to collisions with hydromagnetic turbulence, we study the behavior of the electron component ...
Ionisation in atmospheres of Brown Dwarfs and extrasolar planets I The role of electron avalanche
Brown Dwarfs extrasolar planets
2011/1/10
Brown Dwarf and extrasolar planet atmospheres form clouds which strongly influence the local chemistry and physics. These clouds are globally neutral obeying dust-gas charge equilibrium which is, on s...
Electron screening and its effects on Big-Bang nucleosynthesis
Cosmology and Extragalactic Astrophysics (astro-ph.CO) High Energy Physics - Phenomenology (hep-ph) Nuclear Theory (nucl-th)
2010/12/27
We study the effects of electron screening on nuclear reaction rates occurring during the Big Bang nucleosynthesis epoch. The sensitivity of the predicted elemental abundances on electron screening is...
Magnetic field amplification and electron acceleration to near-energy equipartition with ions by a mildly relativistic quasi-parallel plasma protoshock
High Energy Astrophysical Phenomena (astro-ph.HE)
2010/12/24
The prompt emissions of gamma-ray bursts are seeded by radiating ultrarelativistic electrons. Internal shocks propagating through a jet launched by a stellar implosion, are expected to amplify the mag...
Implications of the Cosmic Ray Electron Spectrum and Anisotropy measured with Fermi-LAT
High Energy Astrophysical Phenomena (astro-ph.HE)
2010/12/23
The Fermi Large Area Telescope (LAT) collaboration recently released the updated results of the measurement of the cosmic ray electron (CRE) spectrum and published its first constraints on the CRE ani...
Evidence of Decay of Flux Ratio of Fe to Fe–Ni Line Features with Electron Temperature in Solar Flares
Sun flares corona—X-rays
2010/9/15
We report observational evidence of the decay of the flux ratio of Fe to Fe–Ni line features as a function of plasma electron temperature in solar flares in comparison to that theoretically predicted ...
STUDY OF COMPTON BROADENING DUE TO ELECTRON-PHOTON SCATTERING
Stars: atmospheres Radiative transfer Scattering
2010/10/29
We have investigated the effects of Compton broadening due to
electron-photon scattering in hot stellar atmospheres. A purely electron-photon
scattering media is assumed to have plane parallel geome...
New Insights into Dissipation in the Electron Layer During Magnetic Reconnection
New Insights Magnetic Reconnection Electron Layer
2010/3/8
Detailed comparisons are reported between laboratory observations of electron-scale dissipation layers near a reconnecting X-line and direct two-dimensional full-particle simulations. Many experimenta...
Estimation of a possible time variation of the electron mass from cmb observations
possible time variation electron mass cmb observations
2009/6/26
Estimation of a possible time variation of the electron mass from cmb observations。
Study of electron density in planetary nebulae。
Energy Dependence of Near-relativistic Electron Spectrum at Geostationary Orbit during the SEP Events of 2005
SEP events shocks geostationary orbit REDs REEs
2009/5/6
In view of the renewed interest in the study of energetic particles
in the outer radiation belt of the earth, we feel it will be helpful in
looking for the energy dependence of the electron energy s...
SEMICLASSICAL CALCULATIONS OF THE QUADRUPLY EXCITED FOUR-ELECTRON SYSTEMS
ISM atoms-Methods analytical
2009/2/11
Highly excited atoms acquire very large dimensions and can be
present only in a very rari¯ed gas medium, such as the interstellar space. Multiply
excited beryllium-like systems, when excited to...