Search Results - "Bieber, W"

A general time-dependent stochastic method for solving Parker's transport equation in spherical coordinates by Pei, C., Bieber, J. W., Burger, R. A., Clem, J.

“…We present a detailed description of our newly developed stochastic approach for solving Parker's transport equation, which we believe is the first attempt to…”
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Turbulence transport throughout the heliosphere by Breech, B., Matthaeus, W. H., Minnie, J., Bieber, J. W., Oughton, S., Smith, C. W., Isenberg, P. A.

“…We employ a turbulence transport model to compute distributions of turbulence throughout the heliosphere. The model determines the radial dependence of three…”
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GIANT GROUND LEVEL ENHANCEMENT OF RELATIVISTIC SOLAR PROTONS ON 2005 JANUARY 20. I. SPACESHIP EARTH OBSERVATIONS by Bieber, J W, Clem, J, Evenson, P, Pyle, R, Saiz, A, Ruffolo, D

“…A ground level enhancement (GLE) is a solar event that accelerates ions (mostly protons) to GeV range energies in such great numbers that ground-based…”
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Nonlinear Parallel and Perpendicular Diffusion of Charged Cosmic Rays in Weak Turbulence by Shalchi, A, Bieber, J. W, Matthaeus, W. H, Qin, G

“…The problem of particle transport perpendicular to a magnetic background field is well known in cosmic-ray astrophysics. Whereas it is widely accepted that…”
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Spectral Properties and Length Scales of Two-dimensional Magnetic Field Models by Matthaeus, W. H, Bieber, J. W, Ruffolo, D, Chuychai, P, Minnie, J

“…Two-dimensional (2D) models of magnetic field fluctuations and turbulence are widely used in space, astrophysical, and laboratory contexts. Here we discuss…”
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Analytic Forms of the Perpendicular Diffusion Coefficient in Magnetostatic Turbulence by Shalchi, A, Bieber, J. W, Matthaeus, W. H

“…Recently, a nonlinear theory for perpendicular diffusion of charged particles was presented. This theory is called the nonlinear guiding center theory and…”
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Parallel and Perpendicular Transport of Heliospheric Cosmic Rays in an Improved Dynamical Turbulence Model by Shalchi, A, Bieber, J. W, Matthaeus, W. H, Schlickeiser, R

“…By applying a new model for the dynamical magnetic turbulence, we calculate parallel and perpendicular mean free paths of heliospheric cosmic rays. The results…”
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Nonlinear Collisionless Perpendicular Diffusion of Charged Particles by Matthaeus, W. H, Qin, G, Bieber, J. W, Zank, G. P

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Determination of interplanetary coronal mass ejection geometry and orientation from ground-based observations of galactic cosmic rays by Kuwabara, T., Bieber, J. W., Evenson, P., Munakata, K., Yasue, S., Kato, C., Fushishita, A., Tokumaru, M., Duldig, M. L., Humble, J. E., Silva, M. R., Dal Lago, A., Schuch, N. J.

“…We have developed a method for determining interplanetary coronal mass ejection (ICME) geometry from galactic cosmic ray data recorded by the ground‐based muon…”
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Subdiffusive transport of charged particles perpendicular to the large scale magnetic field by Qin, G., Matthaeus, W. H., Bieber, J. W.

“…Transport of charged particles across the mean magnetic field due to broad band, powerlaw‐distributed magnetic fluctuations is examined by direct computation…”
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Spaceship Earth Observations of the Easter 2001 Solar Particle Event by Bieber, John W, Evenson, Paul, Dröge, Wolfgang, Pyle, Roger, Ruffolo, David, Rujiwarodom, Manit, Tooprakai, Paisan, Khumlumlert, Thiranee

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Cosmic ray diffusion tensor throughout the heliosphere by Pei, C., Bieber, J. W., Breech, B., Burger, R. A., Clem, J., Matthaeus, W. H.

“…We calculate the cosmic ray diffusion tensor based on a recently developed model of magnetohydrodynamic (MHD) turbulence in the expanding solar wind…”
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When do particles follow field lines? by Minnie, J., Matthaeus, W. H., Bieber, J. W., Ruffolo, D., Burger, R. A.

“…We examine charged particle transport perpendicular to the large scale magnetic field. We find that the limit of an infinite parallel mean free path of…”
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On the Estimation of Solar Energetic Particle Injection Timing from Onset Times near Earth by Sáiz, Alejandro, Evenson, Paul, Ruffolo, David, Bieber, John W

“…We examine the accuracy of a common technique for estimating the start time of solar energetic particle injection based on a linear fit to the observed onset…”
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Relativistic Solar Protons on 1989 October 22: Injection and Transport along Both Legs of a Closed Interplanetary Magnetic Loop by Ruffolo, D, Tooprakai, P, Rujiwarodom, M, Khumlumlert, T, Wechakama, M, Bieber, J. W, Evenson, P, Pyle, R

“…Worldwide neutron monitor observations of relativistic solar protons on 1989 October 22 have proven puzzling, with an initial spike at some stations followed…”
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Global Muon Detector Network Used for Space Weather Applications by Rockenbach, M., Dal Lago, A., Schuch, N. J., Munakata, K., Kuwabara, T., Oliveira, A. G., Echer, E., Braga, C. R., Mendonça, R. R. S., Kato, C., Kozai, M., Tokumaru, M., Bieber, J. W., Evenson, P., Duldig, M. L., Humble, J. E., Al Jassar, H. K., Sharma, M. M., Sabbah, I.

“…In this work, we summarize the development and current status of the Global Muon Detector Network (GMDN). The GMDN started in 1992 with only two muon…”
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Nonlinear guiding center theory of perpendicular diffusion: General properties and comparison with observation by Bieber, John W., Matthaeus, W. H., Shalchi, Andreas, Qin, Gang

“…A nonlinear guiding center (NLGC) theory for diffusion of charged particles perpendicular to the mean magnetic field was recently proposed. Here, we draw…”
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Perpendicular Transport of Charged Particles in Composite Model Turbulence: Recovery of Diffusion by Qin, G, Matthaeus, W. H, Bieber, J. W

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Transport of cross helicity and radial evolution of Alfvénicity in the solar wind by Matthaeus, W. H., Minnie, J., Breech, B., Parhi, S., Bieber, J. W., Oughton, S.

“…A transport theory including cross helicity, magnetohydrodynamic (MHD) turbulence, and driving by shear and pickup ions, is applied to the radial evolution of…”
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Perpendicular Transport of Energetic Charged Particles in Nonaxisymmetric Two-Component Magnetic Turbulence by Ruffolo, D, Chuychai, P, Wongpan, P, Minnie, J, Bieber, J. W, Matthaeus, W. H

“…We examine energetic charged particle diffusion perpendicular to a mean magnetic field [image] due to turbulent fluctuations in a plasma, relaxing the common…”
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