![Stellar Evolution](http://s1.studyres.com/store/data/008084716_1-f2dd42ab74811a44e157f72df07a1776-300x300.png)
Stellar Evolution
... That appear to us as a Pulsar, a source of a rhythmic radio signal first thought to be intelligent aliens! ...
... That appear to us as a Pulsar, a source of a rhythmic radio signal first thought to be intelligent aliens! ...
The intermediate scale anisotropy
... The observation of the large scale CR anisotropy is in agreement with the other experiments and provides useful data to constrain diffusion models. The 300 GeV - 3 TeV large-scale data form ARGO-YBj may provide essential informations about the local and galactic magnetic field. The observation of th ...
... The observation of the large scale CR anisotropy is in agreement with the other experiments and provides useful data to constrain diffusion models. The 300 GeV - 3 TeV large-scale data form ARGO-YBj may provide essential informations about the local and galactic magnetic field. The observation of th ...
Temperature Fluctuations in Ionized Nebulae
... the central star had been born, which can be several 109 years ago. The collisionally excited lines are very sensitive to the electron temperature. In order to get accurate abundances, one would want to measure Te as accurately as possible. However, it is known from theoretical models that in such a ...
... the central star had been born, which can be several 109 years ago. The collisionally excited lines are very sensitive to the electron temperature. In order to get accurate abundances, one would want to measure Te as accurately as possible. However, it is known from theoretical models that in such a ...
The strongest magnetic fields in the universe: how strong can they
... in neutron stars to quantum electrodynamics. It raises the question for a more precise theoretical determination of the quantum electrodynamic limiting field strength accounting for relativistic effects. It also raises the question whether reference to other fundamental length scales may provide oth ...
... in neutron stars to quantum electrodynamics. It raises the question for a more precise theoretical determination of the quantum electrodynamic limiting field strength accounting for relativistic effects. It also raises the question whether reference to other fundamental length scales may provide oth ...
The strongest magnetic fields in the universe: how strong
... in neutron stars to quantum electrodynamics. It raises the question for a more precise theoretical determination of the quantum electrodynamic limiting field strength accounting for relativistic effects. It also raises the question whether reference to other fundamental length scales may provide oth ...
... in neutron stars to quantum electrodynamics. It raises the question for a more precise theoretical determination of the quantum electrodynamic limiting field strength accounting for relativistic effects. It also raises the question whether reference to other fundamental length scales may provide oth ...
Hard X-Ray Polarization – a Diagnostic of Electron
... observer –For vertical field, this is radial direction on the solar disk ...
... observer –For vertical field, this is radial direction on the solar disk ...
Abstract
... In this experiment, electrons are confined two-dimensionally at the “hetero-interface”, the interface between two different type semiconductors. Here, the electron spins were rotated by the electric field that was induced at the hetero-interface, as contrasted to the fact that the neutron spins, in ...
... In this experiment, electrons are confined two-dimensionally at the “hetero-interface”, the interface between two different type semiconductors. Here, the electron spins were rotated by the electric field that was induced at the hetero-interface, as contrasted to the fact that the neutron spins, in ...
The Story of Gold
... any rare iron fusion events are quite likely to spontaneously decompose into lighter elements. Stellar fusion creates all the elements up to iron but cannot continue on to produce gold (79 Au) because of fundamental limits to the fusion process. Another way that changes to atomic nuclei can be effec ...
... any rare iron fusion events are quite likely to spontaneously decompose into lighter elements. Stellar fusion creates all the elements up to iron but cannot continue on to produce gold (79 Au) because of fundamental limits to the fusion process. Another way that changes to atomic nuclei can be effec ...
Coronal magnetic topology and the production of solar impulsive
... than type III radio emission, while the injection of ∼13−300 keV electrons starts when the associated CME reaches ∼1 to 6 Rs . The delayed injection of high-energy electrons can be due either to the acceleration by CME-driven shocks or to the propagation effects in the IPM. Wang et al. (2011) further ...
... than type III radio emission, while the injection of ∼13−300 keV electrons starts when the associated CME reaches ∼1 to 6 Rs . The delayed injection of high-energy electrons can be due either to the acceleration by CME-driven shocks or to the propagation effects in the IPM. Wang et al. (2011) further ...
Slides - GSI Indico
... Theoretical description of QGP: 1. Perturbative QCD (finite temperature): Valid only for small coupling, i.e. at high temperatures (T>>Tc) Polarization tensor, quark self-energy, dispersion relations, damping and production rates, transport coefficients, energy loss, … Apart from color factors simi ...
... Theoretical description of QGP: 1. Perturbative QCD (finite temperature): Valid only for small coupling, i.e. at high temperatures (T>>Tc) Polarization tensor, quark self-energy, dispersion relations, damping and production rates, transport coefficients, energy loss, … Apart from color factors simi ...
MagnetosphereFormation
... Far from the FFS the particles move virtually along the magnetic field lines. Their energy is determined from the balance between the power of accelerated electric field forces and the curvature radiation intensity. When intersecting the FFS, the particles oscillate ultrarelativistically, their ener ...
... Far from the FFS the particles move virtually along the magnetic field lines. Their energy is determined from the balance between the power of accelerated electric field forces and the curvature radiation intensity. When intersecting the FFS, the particles oscillate ultrarelativistically, their ener ...
High Energy Processes in Young Stellar Objects
... Field lines above corotation radius Magnetic loop with both feet in the disk Binary YSOs but less important Reconnection and displacement of footprint are more likely to occur in YSOs due to more possible magnetic configuration offered by star-star, star-disk, disk-disk interaction ...
... Field lines above corotation radius Magnetic loop with both feet in the disk Binary YSOs but less important Reconnection and displacement of footprint are more likely to occur in YSOs due to more possible magnetic configuration offered by star-star, star-disk, disk-disk interaction ...
Real Properties of Electromagnetic Fields and
... Theoretical analyses based on the classical plasma theory often fail to correspond to real results that are obtained via direct observation. On the other hand, simulations on supercomputers and actual laboratory experiments provide accurate descriptions of the behavior of such cosmic plasmas. Rotati ...
... Theoretical analyses based on the classical plasma theory often fail to correspond to real results that are obtained via direct observation. On the other hand, simulations on supercomputers and actual laboratory experiments provide accurate descriptions of the behavior of such cosmic plasmas. Rotati ...
q - Indico
... Ions drift slowly because of their large mass and scattering cross-section. Similar spectrum to the Maxwell energy distribution of the gas molecules. Average drift velocity (W+) increases with the field strength (E) and decreases as the gas pressure, P, increases. A pressure increase leads to a shor ...
... Ions drift slowly because of their large mass and scattering cross-section. Similar spectrum to the Maxwell energy distribution of the gas molecules. Average drift velocity (W+) increases with the field strength (E) and decreases as the gas pressure, P, increases. A pressure increase leads to a shor ...
Ground States of the Hydrogen Molecule and Its Molecular Ion in the
... between the nuclei centered at z = 0. An interesting and general phenomenon for molecules is the decrease of the internuclear bond-length as the field strength increases. The decrease in the equilibrium internuclear distance originates from the simultaneous decrease of the electron clouds perpendicu ...
... between the nuclei centered at z = 0. An interesting and general phenomenon for molecules is the decrease of the internuclear bond-length as the field strength increases. The decrease in the equilibrium internuclear distance originates from the simultaneous decrease of the electron clouds perpendicu ...
Summary
... smaller than those corresponding with electrons or ions, and therefore the most interesting dusty plasma effects occur for low frequencies. The mass of the dust grains is much higher than the mass of the plasma particles, and therefore in some cases the gravity forces come into play. This is the cas ...
... smaller than those corresponding with electrons or ions, and therefore the most interesting dusty plasma effects occur for low frequencies. The mass of the dust grains is much higher than the mass of the plasma particles, and therefore in some cases the gravity forces come into play. This is the cas ...
PH507lecnote07_mcp3
... The difference between them is caused by the size of the energy gap between the valence band, and the conduction band. The valence band can be thought of as the region where electrons are bound ‘in orbit’ around the nucleus of an atom. The conduction band is where the electrons are “free” and can mo ...
... The difference between them is caused by the size of the energy gap between the valence band, and the conduction band. The valence band can be thought of as the region where electrons are bound ‘in orbit’ around the nucleus of an atom. The conduction band is where the electrons are “free” and can mo ...
ppt
... field volumes acting as scattering centers and aiming at each other on either side of the shock at relative velocity v1–v2. The above calculation serves only as an illustration but is not really what we need: we need a model of these scattering centers and an understanding of how they evolve on cros ...
... field volumes acting as scattering centers and aiming at each other on either side of the shock at relative velocity v1–v2. The above calculation serves only as an illustration but is not really what we need: we need a model of these scattering centers and an understanding of how they evolve on cros ...
0119.PDF
... constructive criticism. We appreciate the opportunity to address a few important issues. As we will show most of them are caused by misunderstandings or missing details of the calculations. In this comment we'll provide for our point of view on some problem distinguished by the referee. 1) Sign prob ...
... constructive criticism. We appreciate the opportunity to address a few important issues. As we will show most of them are caused by misunderstandings or missing details of the calculations. In this comment we'll provide for our point of view on some problem distinguished by the referee. 1) Sign prob ...
Spheromaks, solar prominences, and Alfvén instability of current
... resistive MHD, one finds that peaked λ profiles are unstable to resistive tearing modes (Furth et al., 1963; Goldston and Rutherford, 1995) which flatten the current profile and hence the λ profile. However, most plasmas of interest (solar, magnetospheric, and laboratory) have insufficient resistivi ...
... resistive MHD, one finds that peaked λ profiles are unstable to resistive tearing modes (Furth et al., 1963; Goldston and Rutherford, 1995) which flatten the current profile and hence the λ profile. However, most plasmas of interest (solar, magnetospheric, and laboratory) have insufficient resistivi ...
Curriculum Vitae
... Teaching Experience Postgraduate level 19 Yrs. Undergraduate level 21 Yrs. Taught the following courses: Thermodynamics and Statistical Physics, Optics and Classical Mechanics, Nuclear Physics, Electricity and Electronics, Quantum Mechanics and Spectroscopy, Classical Electrodynamics, Advanced Quan ...
... Teaching Experience Postgraduate level 19 Yrs. Undergraduate level 21 Yrs. Taught the following courses: Thermodynamics and Statistical Physics, Optics and Classical Mechanics, Nuclear Physics, Electricity and Electronics, Quantum Mechanics and Spectroscopy, Classical Electrodynamics, Advanced Quan ...
Two-stream instability in collisionless shocks and foreshock
... and a plasma number density of ≈5 cm−3 . Its speed can vary in the range vSW ≈ 105 –106 m s−1 , resulting in Alfvenic Mach numbers of the Earth bow shock in the interval vSW ≈ 2–20 VA and thus in a supercritical shock. The Earth bow shock does not produce cosmic ray radiation, in contrast to astroph ...
... and a plasma number density of ≈5 cm−3 . Its speed can vary in the range vSW ≈ 105 –106 m s−1 , resulting in Alfvenic Mach numbers of the Earth bow shock in the interval vSW ≈ 2–20 VA and thus in a supercritical shock. The Earth bow shock does not produce cosmic ray radiation, in contrast to astroph ...
Quantum mechanical model for the study of pressure
... SC approach allows one to evaluate efficiently averages over excited states. However, in the best formulation, which would be variational, all the electrons should be treated quantum-mechanically and the confinement of ionic species in a spherical cell should be abandoned. In this work, we propose a ...
... SC approach allows one to evaluate efficiently averages over excited states. However, in the best formulation, which would be variational, all the electrons should be treated quantum-mechanically and the confinement of ionic species in a spherical cell should be abandoned. In this work, we propose a ...
Stars and The Universe
... In the sun, nuclei fuse. When they do this, the products of fusion have less mass than the nuclei that fused. This “lost” mass is actually converted to energy, according to Einstein’s famous equation… E = Energy produced by nuclear fusion ...
... In the sun, nuclei fuse. When they do this, the products of fusion have less mass than the nuclei that fused. This “lost” mass is actually converted to energy, according to Einstein’s famous equation… E = Energy produced by nuclear fusion ...
Polywell
The polywell is a type of nuclear fusion reactor that uses an electric field to heat ions to fusion conditions. It is closely related to the magnetic mirror, the fusor, the biconic cusp and the high beta fusion reactor. A set of electromagnets generates a magnetic field which traps electrons. This creates a negative voltage, which attracts positive ions. As the ions accelerate towards the negative center, their kinetic energy rises. If the ions collide in the center, they can fuse.The polywell is one of many devices that use an electric field to heat ions to fusion conditions. This branch of fusion research is known as inertial electrostatic confinement. The polywell was developed by Robert Bussard, as an improvement over the fusor. His company, EMC2, Inc., developed the initial devices for the U.S. Navy.