32 research outputs found
Restoration of the original synchrotron radiation formula
Restoration of original synchrotron radiation formul
The effect of bulk motion on the synchrotron radiation rate
Effect of bulk motion on synchrotron radiation rate for ensemble of relativistic particle
Landau Damping and Debye Shielding
Landau damping in collisionless plasma - Debye shielding of electrostatic plasma perturbatio
A logical contradiction from tachyons
Logical contradiction of existence of tachyons, particles that travel faster than speed of ligh
An improved model for cosmic ray propagation
Model for cosmic ray propagation with particle mirrorin
Universal cosmic rays and Harrison's inhomogeneity postulate
Harrison baryon inhomogeneity postulate of galactic evolution critically analyzed for universality of cosmic ray
The spectral shifts of an ensemble of relativistic emitters
Doppler shift toward red found for radiation from ensemble of relativistically moving emitte
Spectral shifts in quasi-stellar objects
Red and blue shift frequency distribution of quasi-stellar objects from nearby galaxie
The influence of the cosmological expansion on local systems
Following renewed interest, the problem of whether the cosmological expansion
affects the dynamics of local systems is reconsidered. The cosmological
correction to the equations of motion in the locally inertial Fermi normal
frame (the relevant frame for astronomical observations) is computed. The
evolution equations for the cosmological perturbation of the two--body problem
are solved in this frame. The effect on the orbit is insignificant as are the
effects on the galactic and galactic--cluster scales.Comment: To appear in the Astrophysical Journal, Late
Modeling Eridani and asteroseismic tests of element diffusion
Taking into account the helium and metal diffusion, we explore the possible
evolutionary status and perform seismic analysis of MOST target: the star
Eridani. We adopt the different input parameters to construct the
models by fitting the available observational constraints: e.g., ,
, , . From computation, we obtain the average large spacings of
Eridani about Hz. The age of the diffused models has
been found to be about 1 Gyr, which is younger than one determined previously
by models without diffusion. We found that the effect of pure helium diffusion
on the internal structure of the young low-mass star is slight, but the metal
diffusion influence is obvious. The metal diffusion leads the models to have
much higher temperature in the radiation interior, correspondingly the higher
sound speed in the interior of the model, thereby the larger frequency and
spacings.Comment: 16 pages, 4 figures, accepted for publication in ChjA