Results 21 to 30 of about 31,707 (176)

Predictions of the arrival time of Coronal Mass Ejections at 1AU: an analysis of the causes of errors [PDF]

Annales Geophysicae, 2004
Three existing models of Interplanetary Coronal Mass Ejection (ICME) transit between the Sun and the Earth are compared to coronagraph and in situ observations: all three models are found to perform with a similar level of accuracy (i.e.
M. Owens, P. Cargill
doaj   +1 more source

Disappearance of plasmaspheric hiss following interplanetary shock [PDF]

, 2015
Plasmaspheric hiss is one of the important plasma waves controlling radiation belt dynamics. Its spatiotemporal distribution and generation mechanism are presently the object of active research.
Abel, Agapitov, Albert, Baker, Baker, Baker, Blake, Blake, Bortnik, Bortnik, Bortnik, Bortnik, C. A. Kletzing, Chao Shen, Chen, Chen, Chen, Chen, Chen, Chen, D. N. Baker, Foster, Fu, Fuliang Xiao, Funsten, G. B. Hospodarsky, G. D. Reeves, Glauert, Golden, Goldstein, Gonzalez, Gonzalez, Green, H. E. Spence, H. O. Funsten, Hayakawa, Heppner, Horne, Hudson, Hui Zhu, Huinan Zheng, J. B. Blake, J. R. Wygant, Kennel, Kennel, Kletzing, Kurth, Li, Li, Li, Li, Li, Lyons, Mauk, McComas, Meredith, Meredith, Meurant, Min Zhang, Mourenas, Ni, Nunn, Omura, Peng, Reeves, Ronnmark, Russell, Samsonov, Sheeley, Shklyar, Shprits, Shue, J., Shui Wang, Smith, Sonwalkar, Spence, H. E., Stone, Su, Su, Su, Su, Su, Z., Subbotin, Summers, Summers, Summers, Thorne, Thorne, Thorne, Thorne, R. M., Tsurutani, Tsurutani, B. T., Tu, Turner, Ukhorskiy, W. S. Kurth, Wang, Wygant, J., Yuming Wang, Zhang, Zhenpeng Su, Zhou, Zong   +102 more
core   +3 more sources

In situ local shock speed and transit shock speed [PDF]

Annales Geophysicae, 1998
A useful index for estimating the transit speeds was derived by analyzing interplanetary shock observations. This index is the ratio of the in situ local shock speed and the transit speed; it is 0.6–0.9 for most observed shocks.
S. Watari, T. Detman
doaj   +1 more source

Research in space physics at the University of Iowa [PDF]

Various research projects in space physics are summarized. Emphasis is placed on: (1) the study of energetic particles in outer space and their relationships to electric, magnetic, and electromagnetic fields associated with the earth, the sun, the moon ...
Vanallen, J. A.
core   +7 more sources

What causes the variations of the peak intensity of CIR accelerated energetic ion fluxes? [PDF]

Annales Geophysicae, 1998
The variation of the peak intensity of energetic ions accelerated at CIR related shocks in the interplanetary medium as observed by instruments on board of ULYSSES during its pass towards the south polar region and from the north polar region back to ...
E. Keppler
doaj   +1 more source

Magnetic topology of coronal mass ejection events out of the ecliptic: Ulysses/HI-SCALE energetic particle observations [PDF]

Annales Geophysicae, 2003
Solar energetic particle fluxes (Ee > 38 keV) observed by the ULYSSES/HI-SCALE experiment are utilized as diagnostic tracers of the large-scale structure and topology of the Interplanetary Magnetic Field (IMF) embedded within two well ...
O. E. Malandraki, O. E. Malandraki, E. T. Sarris, G. Tsiropoula   +3 more
doaj   +1 more source

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.
Bieber, J.W., Breech, Ben, Matthaeus, William H., Minnie, J., Oughton, Sean, Parhi, S.   +5 more
core   +1 more source

Solar Sector Structure

, 2015
The interplanetary magnetic field near has a characteristic "sector" structure that reflects its polarity relative to the solar direction. Typically we observe large-scale coherence in these directions, with two or four "away" or "towards" sectors per ...
Hannah, Iain, Hudson, Hugh, Svalgaard, Leif   +2 more
core   +1 more source

Relating Intermittency and Inverse Cascade to Stochastic Entropy in Solar Wind Turbulence

The Astrophysical Journal Letters, 2023
Turbulent energy transfer in nearly collisionless plasmas can be conceptualized as a scale-to-scale Langevin process. Hence, the statistics of magnetic field fluctuations can be embedded in the framework of stochastic process theory.
Mirko Stumpo, Simone Benella, Tommaso Alberti, Oreste Pezzi, Emanuele Papini, Giuseppe Consolini   +5 more
doaj   +1 more source

The floor in the interplanetary magnetic field: Estimation on the basis of relative duration of ICME observations in solar wind during 1976-2000

, 2009
To measure the floor in interplanetary magnetic field and estimate the time- invariant open magnetic flux of Sun, it is necessary to know a part of magnetic field of Sun carried away by CMEs.
C.T. Russell, D.F. Webb, D.J. McComas, E.J. Smith, F. Valach, I. G. Lodkina, I.G. Richardson, I.G. Richardson, J.G. Luhmann, J.H. King, K.G. McCracken, L. Burlaga, L. Svalgaard, L.A. Fisk, L.F. Burlaga, M. Lockwood, M. Y. Yermolaev, M.J. Owens, M.J. Owens, M.J. Owens, M.J. Owens, N. S. Nikolaeva, P. Riley, S.T. Lepri, Y. I. Yermolaev, Y.-M. Wang, Y.-M. Wang, Yu.I. Yermolaev   +27 more
core   +1 more source