Results 81 to 90 of about 21,013 (198)

Refinement of Global Coronal and Interplanetary Magnetic Field Extrapolations Constrained by Remote-sensing and In Situ Observations at the Solar Minimum

open access: yesThe Astrophysical Journal
Solar magnetic fields are closely related to various physical phenomena on the Sun, which can be extrapolated with different models from photospheric magnetograms.
Guanglu Shi   +4 more
doaj   +1 more source

Magnetic fields and solar wind [PDF]

open access: yes
Solar corpuscular radiation interaction with geomagnetic field - solar wind, interplanetary magnetic fields, magnetosphere boundary, and solar wind heating and sudden pressure ...
Sugiura, M.
core   +1 more source

Evolution of the interplanetary magnetic field [PDF]

open access: yes, 1994
Remote observations of magnetic field topologies in the solar corona and in situ observations of the solar wind and interplanetary magnetic field (IMF) in interplanetary space are used to examine the temporal evolution of the spatial distribution of open and closed field regions emanating from the Sun.
openaire   +1 more source

Evolutionary Dynamics of Counterhelical Magnetic Flux Ropes

open access: yesThe Astrophysical Journal
Upon interaction, a pair of magnetic flux ropes can merge to form a new pair, each consisting of opposite helicity along their axis. Magnetic helicity along such new structures may annihilate and release the energy of the azimuthal magnetic field.
Ying-Dong Jia   +9 more
doaj   +1 more source

Interplanetary magnetic fields, their fluctuations, and cosmic ray variations [PDF]

open access: yes
The cause of Forbush decreases is examined using neutron monitor data and measurements of the interplanetary magnetic field. It is found that for the period examined (Dec.
Barouch, E., Sari, J. W.
core   +1 more source

Solar magnetic fields and the corona [PDF]

open access: yes
Results from a seminar on the role of solar magnetic fields in determining the structure of the corona and interplanetary medium are presented. Some topics considered are: (1) polar regions of the sun which have identical magnetic configurations but ...
Newkirk, G., Jr.
core   +1 more source

Comparison of Solar Wind Current Sheets in the Inner Heliosphere

open access: yesThe Astrophysical Journal
The solar wind is filled with intense current sheets (magnetic field discontinuities) that host multiple instabilities and may undergo magnetic reconnection, a basic process for plasma heating and charged particle acceleration.
Zijin Zhang   +4 more
doaj   +1 more source

Scale and Time Dependence of Alfvénicity in the Solar Wind as Observed by the Parker Solar Probe

open access: yesThe Astrophysical Journal
Alfvénicity is a well-known property, common in the solar wind, characterized by a high correlation between magnetic and velocity fluctuations. Data from the Parker Solar Probe (PSP) enable the study of this property closer to the Sun than ever before ...
Panisara Thepthong   +6 more
doaj   +1 more source

Interplay of Large-scale Drift and Turbulence in the Heliospheric Propagation of Solar Energetic Particles

open access: yesThe Astrophysical Journal
The gradient and curvature of the Parker spiral interplanetary magnetic field give rise to curvature and gradient guiding-center drifts on cosmic rays (CRs). The plasma turbulence present in interplanetary space is thought to suppress the drifts; however,
T. Laitinen, S. Dalla
doaj   +1 more source

Distribution and Anisotropy of the Energy Transfer Rate in the Solar Wind Turbulence

open access: yesThe Astrophysical Journal
The distribution of the energy transfer rate is critical for the interpretation of the intermittent energy cascade in the solar wind turbulence. However, the true observational distribution of the energy transfer rate in the solar wind and its anisotropy
Honghong Wu   +4 more
doaj   +1 more source

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