Determination of the levitation limits of dust particles within the
... even though two possible requirements for the existence of the presheath are collisionality and ionization within the presheath.9 Although the Bohm criterion has been used for decades to describe the sheath edge, limits to this criterion have been identified. A recent theory by Loizu et al.10 shows ...
... even though two possible requirements for the existence of the presheath are collisionality and ionization within the presheath.9 Although the Bohm criterion has been used for decades to describe the sheath edge, limits to this criterion have been identified. A recent theory by Loizu et al.10 shows ...
Star-Planet Interactions
... and differences with the Sun-planet interactions. In the Solar system, planets are located√in a region where the velocity of the solar wind vw is greater than the local Alfven velocity vA = B/ µρ, where B is the magnetic field in the interplanetary space, µ the permeability of the plasma, and ρ its ...
... and differences with the Sun-planet interactions. In the Solar system, planets are located√in a region where the velocity of the solar wind vw is greater than the local Alfven velocity vA = B/ µρ, where B is the magnetic field in the interplanetary space, µ the permeability of the plasma, and ρ its ...
Chapter 3 (Lectures 7
... rather little during this evolution stage, it might appear that not much change would be expected in the magnetic fields either, but recall that the main sequence covers about 90% of the time when a star is visibly luminous. There are certainly theoretical reasons to expect field evolution during th ...
... rather little during this evolution stage, it might appear that not much change would be expected in the magnetic fields either, but recall that the main sequence covers about 90% of the time when a star is visibly luminous. There are certainly theoretical reasons to expect field evolution during th ...
On Magnetohydrodynamic (MHD)
... An innovative technique of developing advanced heat transfer liquids with higher conductivities involves dispersing small amounts of nanometer-sized (10–50 nm) particles in base fluids, resulting into what is commonly known as nanofluids, a term introduced in 1995 by Choi. Several theoretical and ex ...
... An innovative technique of developing advanced heat transfer liquids with higher conductivities involves dispersing small amounts of nanometer-sized (10–50 nm) particles in base fluids, resulting into what is commonly known as nanofluids, a term introduced in 1995 by Choi. Several theoretical and ex ...
AMPTE: NOTES ON THE INITIAL ... WORK IN PROGRESS _ _ _ _ _... _
... tronvolts. Up to this time, the instrumentation did not exist to determine what kinds of particles they werehydrogen, helium, or oxygen. There is an immense amount of literature speculating on the nature of ring current composition. The American spacecraft on AMPTE, the Charge Composition Explorer, ...
... tronvolts. Up to this time, the instrumentation did not exist to determine what kinds of particles they werehydrogen, helium, or oxygen. There is an immense amount of literature speculating on the nature of ring current composition. The American spacecraft on AMPTE, the Charge Composition Explorer, ...
640251Lecture18Temperature
... • Infrared thermometers measure temperature using (infrared) radiation emitted from objects. They are sometimes called laser thermometers if a laser is used to help aim the thermometer, or non-contact thermometers to describe the device’s ability to measure temperature from a distance. By knowing th ...
... • Infrared thermometers measure temperature using (infrared) radiation emitted from objects. They are sometimes called laser thermometers if a laser is used to help aim the thermometer, or non-contact thermometers to describe the device’s ability to measure temperature from a distance. By knowing th ...
Spontaneous radiative alignment of dipole moments of atoms
... about its motion axis. Thus, both the oscillator excitation and the alignment effects have a common cause, viz., action produced by dipole-excited natural waves of the medium. Since the radiation force is weak under ordinary conditions2 (in the present formulation, the sufficient condition for its w ...
... about its motion axis. Thus, both the oscillator excitation and the alignment effects have a common cause, viz., action produced by dipole-excited natural waves of the medium. Since the radiation force is weak under ordinary conditions2 (in the present formulation, the sufficient condition for its w ...
Scattering of Sunlight in Lunar Exosphere Caused by Gravitational
... these particles (gravitational microclusters of lunar dust) inside the lunar exosphere. Under these circumstances, it density becomes equal to the density of the lunar exosphere (~ 10 −18 kg.m −3 ) [14]. The amount of Rayleigh scattering that occurs for a beam of light depends upon the size of the p ...
... these particles (gravitational microclusters of lunar dust) inside the lunar exosphere. Under these circumstances, it density becomes equal to the density of the lunar exosphere (~ 10 −18 kg.m −3 ) [14]. The amount of Rayleigh scattering that occurs for a beam of light depends upon the size of the p ...
The sun and the solar corona
... involve conservation of mass and momentum, as well as the laws of thermodynamics, variations of the key parameters: density, temperature and pressure with radius can be deduced. But unless we find a way to “see” inside the Sun, to verify the calculations, we cannot be certain that the model deduced ...
... involve conservation of mass and momentum, as well as the laws of thermodynamics, variations of the key parameters: density, temperature and pressure with radius can be deduced. But unless we find a way to “see” inside the Sun, to verify the calculations, we cannot be certain that the model deduced ...
Magnetic Doppler imaging of the roAp star HD 24712⋆
... tra of Ap stars are well-explained by dipolar or quadrupolarlike fields with some additional influence of abundance inhomogeneities. Multipolar regularization (see Piskunov & Kochukhov 2002) has been successfully used for the mapping of the Ap stars α2 CVn (Kochukhov et al. 2002) and HD 72106 (Folso ...
... tra of Ap stars are well-explained by dipolar or quadrupolarlike fields with some additional influence of abundance inhomogeneities. Multipolar regularization (see Piskunov & Kochukhov 2002) has been successfully used for the mapping of the Ap stars α2 CVn (Kochukhov et al. 2002) and HD 72106 (Folso ...
Stellar Magnetic Field_1
... Fine structure splitting varies a lot in atoms, so a few lines may be in Paschen-Back regime at much smaller B value than others. Paschen-Back splitting of H and Li is easily demonstrated in lab at 30000 G Magnetic white dwarfs, with B of 104 to 108G, are in quadratic Zeeman regime - or even beyond, ...
... Fine structure splitting varies a lot in atoms, so a few lines may be in Paschen-Back regime at much smaller B value than others. Paschen-Back splitting of H and Li is easily demonstrated in lab at 30000 G Magnetic white dwarfs, with B of 104 to 108G, are in quadratic Zeeman regime - or even beyond, ...
