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Effect of Ion Dynamics on the Evolution of Electron Phase-space Holes
Ion dynamics Electron holes Transverse instability Magnetized plasma
2013/10/3
The evolution of two-dimensional (2D) electron phase-space holes (electron holes) has been previously investigated with electrostatic Particle-in-Cell (PIC) simulations, which neglect ion dynamics. Th...
The Electron Capture Decay of 163-Ho to Measure the Electron Neutrino Mass with sub-eV Accuracy and Beyond
electron neutrino mass electron capture decay 163Ho
2012/2/24
We have investigated the possibility of measuring the electron neutrino mass with sub-eV sensitivity by studying the electron capture decay of 163-Ho with cryogenic microcalorimeters. In this paper we...
High Frame-rate Imaging Based Photometry, Photometric Reduction of Data from Electron-multiplying Charge Coupled Devices (EMCCDs)
Instrumentation high angular resolution image processing photometric Gravitational lensing micro
2012/2/24
The EMCCD is a type of CCD that delivers fast readout times and negligible readout noise, making it an ideal detector for high frame rate applications which improve resolution, like lucky imaging or s...
Electron-acoustic solitary waves in the presence of a suprathermal electron component
Electron-acoustic solitary presence suprathermal electron component
2011/10/20
The nonlinear dynamics of electron-acoustic localized structures in a collisionless and unmagnetized plasma consisting of "cool" inertial electrons, "hot" electrons having a kappa distribution, and st...
Deep sub electron noise readout in CCD systems using digital filtering techniques
CCD spectroscopy dark matter sub electron noise
2011/9/28
Scientific CCDs designed in thick high resistivity silicon (Si) are excellent detectors for astronomy, high energy and nuclear physics, and instrumentation. Many applications can benefit from CCDs ult...
Semi-analytical model of cosmic ray electron transport
Semi-analytical model cosmic ray electron transport
2011/9/28
We present a numerical extension to the analytical propagation model introduced in Hein and Spanier (2008) to describe the leptonic population in the galactic disc. The model is used to derive a possi...
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 ...
Electron Temperatures in W51 Complex from High Resolution, Low Frequency Radio Observations
ISM—HII regions—radio continuum—individual (W51)
2010/9/15
W51 is a giant radio complex lying along the tangent to the Sagitarius arm at a distance of about 7 kpc from the Sun, with an extension of about 1◦ in the sky. It is divided into three component...
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...