Conceptual steps towards exploring the fundamental nature of our Sun
... the growth of instability (Tsytovich, 1970, 1). Plasma microinstabilities are localized, usually high frequency phenomena that cannot be described in MHD but in the kinetic models. In general, the plasma can support electric currents (e.g. Goossens, 2003, 1). Plasmas are extremely complicated physic ...
... the growth of instability (Tsytovich, 1970, 1). Plasma microinstabilities are localized, usually high frequency phenomena that cannot be described in MHD but in the kinetic models. In general, the plasma can support electric currents (e.g. Goossens, 2003, 1). Plasmas are extremely complicated physic ...
Oieroset_ARTEMIS_tail_science
... Two-spacecraft measurements can be used to identify non-linear KH vortices which have been suggested to provide significant solar wind entry into the tail during northward IMF conditions. ...
... Two-spacecraft measurements can be used to identify non-linear KH vortices which have been suggested to provide significant solar wind entry into the tail during northward IMF conditions. ...
Simulation of horizontal еlectromagnetic showers in the аtmosphere
... and the discovery of the microwave background radiation (MBR) four years later it was realized simultaneously by Greisen [1966] and Zatsepin and Kuzmin [1966] that the cosmic ray energy spectrum should end around 5 × 1020 eV due to interactions with photons of MBR (GZK cutoff). The cosmic rays aroun ...
... and the discovery of the microwave background radiation (MBR) four years later it was realized simultaneously by Greisen [1966] and Zatsepin and Kuzmin [1966] that the cosmic ray energy spectrum should end around 5 × 1020 eV due to interactions with photons of MBR (GZK cutoff). The cosmic rays aroun ...
20041012090010101-148840
... generates thin ’jet’ with vortex pairs moves very slowly, in ~ pressure equilibrium essentially a wrinkled 2D contact discontinuity ...
... generates thin ’jet’ with vortex pairs moves very slowly, in ~ pressure equilibrium essentially a wrinkled 2D contact discontinuity ...
Turbulent kinetic energy spectra of solar convection from New Solar
... vertical field strength of 10 G (a), and the horizontal velocities reconstructed by LCT from the TiO observations at NST/BBSO (b). Panel (a) also shows deviations of the energy spectra for the full resolution of the numerical data (12.5 km) and for the resolution degraded to the observational resolu ...
... vertical field strength of 10 G (a), and the horizontal velocities reconstructed by LCT from the TiO observations at NST/BBSO (b). Panel (a) also shows deviations of the energy spectra for the full resolution of the numerical data (12.5 km) and for the resolution degraded to the observational resolu ...
the magnetic field properties of radio galaxies in different
... supporting AGN jet powering through extraction of spin energy of SMBH by dynamically important magnetic fields Magnetic field properties of radio-loud AGN in different accretion modes ...
... supporting AGN jet powering through extraction of spin energy of SMBH by dynamically important magnetic fields Magnetic field properties of radio-loud AGN in different accretion modes ...
Proposal: Concept of a test stand for laser accelerated
... regime of relativistic plasma physics became accessible. The term "relativistic" marks the fact that electrons in the laser focus are accelerated close to the velocity of light within one half laser period, which happens for light intensities exceeding 1018 W/cm2 . A wealth of new phenomena had been ...
... regime of relativistic plasma physics became accessible. The term "relativistic" marks the fact that electrons in the laser focus are accelerated close to the velocity of light within one half laser period, which happens for light intensities exceeding 1018 W/cm2 . A wealth of new phenomena had been ...
Zettawatt-Exawatt Lasers and Their Applications in Ultrastrong
... Over the past fifteen years, we have seen a revolution in laser intensities [1]. This revolution stemmed from the technique of chirped pulse amplification (CPA), combined with recent progress in short-pulse generation and superior-energy-storage materials like Ti:sapphire, Nd:glass, and Yb:glass. The ...
... Over the past fifteen years, we have seen a revolution in laser intensities [1]. This revolution stemmed from the technique of chirped pulse amplification (CPA), combined with recent progress in short-pulse generation and superior-energy-storage materials like Ti:sapphire, Nd:glass, and Yb:glass. The ...
The Cosmic Rays and Our Galaxy
... produces ionization. The resulting ions act as condensation centers, around which a mist will form. Due to many ions being produced along the path of the charged particle, the tracks of particles having electric charge Ze = 1 or 2 have distinctive shapes (an alpha particle’s track is broad, while an ...
... produces ionization. The resulting ions act as condensation centers, around which a mist will form. Due to many ions being produced along the path of the charged particle, the tracks of particles having electric charge Ze = 1 or 2 have distinctive shapes (an alpha particle’s track is broad, while an ...
a plane-symmetric magnetized inhomogeneous cosmological model
... The occurrence of magnetic fields on galactic scale is well-established fact today, and their importance for a variety of astrophysical phenomena is generally acknowledged as pointed out by Zeldovich et al. [20]. Also Harrison [21] has suggested that magnetic field could have a cosmological origin. ...
... The occurrence of magnetic fields on galactic scale is well-established fact today, and their importance for a variety of astrophysical phenomena is generally acknowledged as pointed out by Zeldovich et al. [20]. Also Harrison [21] has suggested that magnetic field could have a cosmological origin. ...
The Larmor Formula
... Larmor formula for the emission from single particle • Strictly, the Larmor formula gives the time averaged radiated power • In many cases the Larmor formula describes roughly “the power radiated during an event” – Larmor formula then gives the radiated power averaged over the event ...
... Larmor formula for the emission from single particle • Strictly, the Larmor formula gives the time averaged radiated power • In many cases the Larmor formula describes roughly “the power radiated during an event” – Larmor formula then gives the radiated power averaged over the event ...
Electron-ion recombination of the open-4f
... The experiment was carried out by employing the electron-ion merged-beams technique at the heavy-ion storage ring TSR of the Max-PlanckInstitute for Nuclear Physics in Heidelberg, Germany. As in the previous cases of W18+ and W20+ , an extremely large W19+ recombination rate coefficient has been obs ...
... The experiment was carried out by employing the electron-ion merged-beams technique at the heavy-ion storage ring TSR of the Max-PlanckInstitute for Nuclear Physics in Heidelberg, Germany. As in the previous cases of W18+ and W20+ , an extremely large W19+ recombination rate coefficient has been obs ...
PPT
... Comptonization – Inverse Compton In each of these photon scatterings, if the electron and photon energies are very different, an inelastic scattering (the Compton process) will occur, either raising or lowering the photon energy in the process. In most cases we will encounter, the photons will be c ...
... Comptonization – Inverse Compton In each of these photon scatterings, if the electron and photon energies are very different, an inelastic scattering (the Compton process) will occur, either raising or lowering the photon energy in the process. In most cases we will encounter, the photons will be c ...
Excitation of the Hydrogen 21
... magnetic interaction induced by the atomic or free electron, as the case may be, is less than the electrostatic interaction by roughly v2/c2. This quantity is 5 X 10for atomic electrons and only 4 X 10-6 for free electrons at 104°K. It seems very probable, therefore, that by far the most frequent co ...
... magnetic interaction induced by the atomic or free electron, as the case may be, is less than the electrostatic interaction by roughly v2/c2. This quantity is 5 X 10for atomic electrons and only 4 X 10-6 for free electrons at 104°K. It seems very probable, therefore, that by far the most frequent co ...
Annular Comb Gate
... oversized outer cylinder kept at a higher potential, such that the field is smooth. Position sensing anodes can be implemented if the dual-Hadamard system is employed, though all such improvements do make the design more complicated. Likewise, should total energy, E (and hence, q) be desired, the an ...
... oversized outer cylinder kept at a higher potential, such that the field is smooth. Position sensing anodes can be implemented if the dual-Hadamard system is employed, though all such improvements do make the design more complicated. Likewise, should total energy, E (and hence, q) be desired, the an ...
Modelling Mercury`s magnetospheric magnetic field
... • Substantial magnetic fields from external current systems. • Accurate modeling of magnetospheric magnetic field is key to analyzing planetary field (dynamo, crustal, induced). • Paraboloid model: internal offset dipole field + cross-tail & magnetopause currents confined within a magnetopause presc ...
... • Substantial magnetic fields from external current systems. • Accurate modeling of magnetospheric magnetic field is key to analyzing planetary field (dynamo, crustal, induced). • Paraboloid model: internal offset dipole field + cross-tail & magnetopause currents confined within a magnetopause presc ...
Lecture 24: High Mass Star Formation Astro 6890/8980 Prof. Tom
... The birthline sets the initial conditions of pre-main sequence contraction. The birthline is strongly dependent on the amount of energy deposited by the accreting gas, the amount of the star covered by accreting gas, and energy generation by burning of ...
... The birthline sets the initial conditions of pre-main sequence contraction. The birthline is strongly dependent on the amount of energy deposited by the accreting gas, the amount of the star covered by accreting gas, and energy generation by burning of ...
RADIATION SIGNATURES OF SUB
... synchrotron radiation, whose spectrum peaks at ωs ∼ (eB/mc)γ 2 , has an asymptotic ω 1/3 dependence below the peak and falls off exponentially at higher frequencies (it makes a second power-law for an isotropic ensemble of particles having a power-law distribution in energy). This is often true, but ...
... synchrotron radiation, whose spectrum peaks at ωs ∼ (eB/mc)γ 2 , has an asymptotic ω 1/3 dependence below the peak and falls off exponentially at higher frequencies (it makes a second power-law for an isotropic ensemble of particles having a power-law distribution in energy). This is often true, but ...
small free negative ions
... severe; they are principally the requirement of an appropriate negative ion source, of high intensity in the light beam and of moderately stability in the two sources. Discharges have proved to be satisfactory sources; constricting the discharge electrically, magnetically, or both can be used to giv ...
... severe; they are principally the requirement of an appropriate negative ion source, of high intensity in the light beam and of moderately stability in the two sources. Discharges have proved to be satisfactory sources; constricting the discharge electrically, magnetically, or both can be used to giv ...
Astronomy Astrophysics Pulsar timing irregularities and the imprint of magnetic field evolution
... (Manchester et al. 2005), we extracted a sample of pulsars for which ν̈ has a quoted error smaller than 10%. From this preselected sample, we excluded all pulsars in binaries and those with very short periods (P < 15 ms), likely to be recycled, and we doubled checked our list with the more recent re ...
... (Manchester et al. 2005), we extracted a sample of pulsars for which ν̈ has a quoted error smaller than 10%. From this preselected sample, we excluded all pulsars in binaries and those with very short periods (P < 15 ms), likely to be recycled, and we doubled checked our list with the more recent re ...
Proposed isotropic negative index in three-dimensional optical metamaterials Boubacar Kante, Kevin O’Brien,
... past few years.1–4 Applications such as perfect lenses,5 rainbow trapping and light stopping devices,6 directive antennas,7 and cloaking8,9 are the main motivations because of their potential in fields ranging from astrophysics, defense, medicine, or integrated nanophotonics. As one of the best desi ...
... past few years.1–4 Applications such as perfect lenses,5 rainbow trapping and light stopping devices,6 directive antennas,7 and cloaking8,9 are the main motivations because of their potential in fields ranging from astrophysics, defense, medicine, or integrated nanophotonics. As one of the best desi ...
Large-scale magnetic flux concentrations from turbulent stresses 331 A. Brandenburg , N. Kleeorin
... In this study we provide the first numerical demonstration of the effects of turbulence on the mean Lorentz force and the resulting formation of large-scale magnetic structures. Using three-dimensional direct numerical simulations (DNS) of forced turbulence we show that an imposed mean magnetic fiel ...
... In this study we provide the first numerical demonstration of the effects of turbulence on the mean Lorentz force and the resulting formation of large-scale magnetic structures. Using three-dimensional direct numerical simulations (DNS) of forced turbulence we show that an imposed mean magnetic fiel ...
Stockholm University
... equation with an additional ambipolar diffusion term, which implies the presence of an effective velocity correction proportional to the local Lorentz force. This is sometimes called the magnetofrictional method and has been introduced by Yang et al. (1986) and Klimchuk & Sturrock (1992). In this appr ...
... equation with an additional ambipolar diffusion term, which implies the presence of an effective velocity correction proportional to the local Lorentz force. This is sometimes called the magnetofrictional method and has been introduced by Yang et al. (1986) and Klimchuk & Sturrock (1992). In this appr ...
nic xiii002
... 3. Electron capture in intermediate mass stars In recent simulations [4] has been pointed out that the typical range of temperature and densities for the onset of electron–capture supernova are T ≈ 108 − 1010 K (≈ 103 − 105 eV), ρ ≈ 109 − 1010 g/cm3 that imply an electron chemical potential µe ≈ 5 − ...
... 3. Electron capture in intermediate mass stars In recent simulations [4] has been pointed out that the typical range of temperature and densities for the onset of electron–capture supernova are T ≈ 108 − 1010 K (≈ 103 − 105 eV), ρ ≈ 109 − 1010 g/cm3 that imply an electron chemical potential µe ≈ 5 − ...
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.