Results 21 to 30 of about 1,762,916 (284)

On the heliolatitudinal variation of the galactic cosmic-ray intensity. Comparison with Ulysses measurements [PDF]

Annales Geophysicae, 2003
We study the dependence of cosmic rays with heliolatitude using a simple method and compare the results with the actual data from Ulysses and IMP spacecraft.
G. Exarhos, G. Exarhos, X. Moussas
doaj   +1 more source

COMPARING SHOCKS IN PLANETARY NEBULAE WITH THE SOLAR WIND TERMINATION SHOCK [PDF]

The Astrophysical Journal, 2010
We show that suprathermal particles, termed pick-up ions (PUIs), might reduce the postshock temperature of the fast wind and jets in some planetary nebulae (PNs) and in symbiotic systems. The goal is to explain the finding that the temperature of the hot bubble formed by the post-shock gas in some PNs and symbiotic nebulae is lower, sometimes by more ...
Soker, Noam, Rahin, Roi, Behar, Ehud, Kastner, Joel H.   +3 more
openaire   +2 more sources

Pickup Ion–Mediated Magnetic Reconnection in the Outer Heliosphere

The Astrophysical Journal Letters, 2023
Pickup ions (PUIs) play a crucial role in the heliosphere, contributing to the mediation of large-scale structures such as the distant solar wind, the heliospheric termination shock, and the heliopause.
M. Nakanotani, G. P. Zank, L.-L. Zhao
doaj   +1 more source

Relativistic-electron dropouts and recovery: A superposed epoch study of the magnetosphere and the solar wind [PDF]

, 2009
During 124 high-speed-stream-driven storms from two solar cycles, a multispacecraft average of the 1.1–1.5 MeV electron flux measured at geosynchronous orbit is examined to study global dropouts of the flux. Solar wind and magnetospheric measurements are
Denton, Michael H., Borovsky, J. E.
core   +4 more sources

Consequences of the Solar System passage through dense interstellar clouds [PDF]

Annales Geophysicae, 2003
Several consequences of the passage of the solar system through dense interstellar molecular clouds are discussed. These clouds, dense (more than 100 cm-3), cold (10–50 K) and extended (larger than 1 pc), are characterized by a gas-to-dust mass ...
A. G. Yeghikyan, A. G. Yeghikyan, H. J. Fahr   +2 more
doaj   +1 more source

Statistics of counter-streaming solar wind suprathermal electrons at solar minimum : STEREO observations [PDF]

, 2010
Previous work has shown that solar wind suprathermal electrons can display a number of features in terms of their anisotropy. Of importance is the occurrence of counter-streaming electron patterns, i.e., with "beams" both parallel and anti-parallel to ...
Skoug, R. M., C. Mazelle, A. Opitz, Luhmann, J.G., E. Penou, Penou, E., C. Jacquey, Génot, Vincent, Larson, D. E., Jian, L., Sauvaud, J.-A., Fedorov, A., Jacquey, C.J., P. Schroeder, Gosling, J.T., Skoug, R.M., R. M. Skoug, Jacquey, C., K. D. Simunac, Meziane, K., Russell, C. T., Lavraud, B., C. Foullon, Foullon, C., J.-A. Sauvaud, Sauvaud, Jean-André, Rouillard, A.P., I. Dandouras, Rouillard, A. P., Génot, V., Luhmann, J. G., J. T. Gosling, C. T. Russell, J. T. Steinberg, Foullon, C. (Claire), A. B. Galvin, Opitz, A., Simunac, K. D., Larson, D.E., K. Meziane, Mazelle, C., Foullon, Claire, A. Fedorov, Galvin, A. B., J. G. Luhmann, Sauvaud, J.A., P. Louarn, Russell, C. T. (Christopher T.), Steinberg, John Tyree, D. E. Larson, Dandouras, I., Steinberg, J. T., Simunac, K.D.C., A. P. Rouillard, Schroeder, P., Russell, C.T., Galvin, A.B., Steinberg, J.T., Gosling, J. T., L. Jian, Louarn, P., V. Génot, B. Lavraud   +62 more
core   +2 more sources

The Modulation of Anomalous and Galactic Cosmic-Ray Oxygen over Successive Solar Cycle Minima

The Astrophysical Journal, 2023
Both the recent 2009 and 2020 solar minima were classified as unusually quiet and characterized with unusually high galactic cosmic-ray (GCR) levels. However, unlike the trends from previous decades, in which anomalous cosmic-ray (ACR) and GCR levels ...
R. D. Strauss, R. A. Leske, J. S. Rankin
doaj   +1 more source

Parallel and perpendicular cascades in solar wind turbulence [PDF]

, 2005
MHD-scale fluctuations in the velocity, magnetic, and density fields of the solar wind are routinely observed. The evolution of these fluctuations, as they are transported radially outwards by the solar wind, is believed to involve both wave and ...
Matthaeus, William H., Oughton, Sean, S. Oughton, W. H. Matthaeus, Oughton, S., Matthaeus, W. H.   +5 more
core   +2 more sources

Transport of cross helicity and radial evolution of alfvenicity in the solar wind [PDF]

, 2004
A transport theory including cross helicity, magnetohydrodynamic(MHD) turbulence, and driving by shear and pickup ions, is applied to the radial evolution of the solar wind.
Matthaeus, William H., Oughton, Sean, Minnie, J., Bieber, J.W., Parhi, S., Breech, Ben   +5 more
core   +2 more sources

Dynamical age of solar wind turbulence in the outer heliosphere [PDF]

, 1998
In an evolving turbulent medium, a natural timescale can be defined in terms of the energy decay time. The time evolution may be complicated by other effects such as energy supply due to driving, and spatial inhomogeneity.
Matthaeus, William H., Oughton, Sean, William H. Matthaeus, Smith, Charles W., Charles W. Smith, Sean Oughton   +5 more
core   +1 more source