Results 21 to 30 of about 932,549 (275)

A Series of Advances in Analytic Interplanetary CME Modeling

open access: yesSpace Weather, 2023
Coronal mass ejections (CMEs) and high speed streams (HSSs) are large‐scale transient structures that routinely propagate away from the Sun. Individually, they can cause space weather effects at the Earth, or elsewhere in space, but many of the largest ...
C. Kay   +4 more
semanticscholar   +1 more source

PHYSICAL CHARACTERISTICS OF CORONAL REGION DRIVING OUT THE INTERPLANETARY SHOCK [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2008
Using the solar wind data of 2000 observed by ACE, We classified the interplanetary shock on basis of shock driver. We examined the physical properties of shock drivers such as the ratio of charge states(O7/O6) and thermal index(I_{th}). Most of 51 interplanetary shocks are driven by interplanetary coronal mass ejections(ICME; magnetic cloud and ejecta)
Su Yeon Oh, Yu Yi
openaire   +2 more sources

Heliocentric Distance and Solar Activity Dependence of Sustained Quasi-radial Interplanetary Magnetic Field Occurrence

open access: yesAstrophysical Journal, 2023
Planets close to their stars experience an interplanetary magnetic field (IMF) that is dominantly quasi-radial. Our solar system serves as a laboratory to study how the occurrence of quasi-radial IMF varies away from the star and under different stellar ...
B. Burkholder   +7 more
semanticscholar   +1 more source

Observations of ionospheric flows and particle precipitation following a Sudden Commencement [PDF]

open access: yesAnnales Geophysicae, 2000
On May 4, 1998, at 0227 UT an interplanetary shock crossed the WIND spacecraft, and half an hour later a Sudden Commencement occurred. Coinciding with the Sudden Commencement a rapid intensification of the flux of particle precipitation into the ...
E. Nielsen, E. Nielsen, F. Honary
doaj   +1 more source

Quantifying the Agyrotropy of Proton and Electron Heating in Turbulent Plasmas

open access: yesThe Astrophysical Journal, 2023
An important aspect of energy dissipation in weakly collisional plasmas is that of energy partitioning between different species (e.g., protons and electrons) and between different energy channels.
Yan Yang   +10 more
doaj   +1 more source

Space-based tests of gravity with laser ranging [PDF]

open access: yes, 2006
Existing capabilities in laser ranging, optical interferometry and metrology, in combination with precision frequency standards, atom-based quantum sensors, and drag-free technologies, are critical for the space-based tests of fundamental physics; as a ...
JAMES G. WILLIAMS   +4 more
core   +2 more sources

Planar Magnetic Structures Downstream of Coronal Mass Ejection–driven Shocks in the Inner Heliosphere

open access: yesThe Astrophysical Journal, 2023
Planar magnetic structures (PMSs), characterized by interplanetary magnetic field vectors remaining parallel to a specific plane, are commonly observed in the solar wind, especially in the sheath region of interplanetary coronal mass ejections (ICMEs ...
Mengsi Ruan   +9 more
doaj   +1 more source

From the Sun’s atmosphere to the Earth’s atmosphere: an overview of scientific models available for space weather developments [PDF]

open access: yesAnnales Geophysicae, 2002
Space weather aims at setting operational numerical tools in order to nowcast, forecast and quantify the solar activity events, the magnetosphere, ionosphere and thermosphere responses and the consequences on our technological societies.
C. Lathuillère   +7 more
doaj   +1 more source

On the probability distribution function of small scale interplanetary magnetic field fluctuations [PDF]

open access: yes, 2004
In spite of a large number of papers dedicated to study MHD turbulence in the solar wind there are still some simple questions which have never been sufficiently addressed like: a)do we really know how the magnetic field vector orientation fluctuates in ...
Bavassano, B.   +6 more
core   +4 more sources

Betatron Acceleration of Suprathermal Electrons within a Small-scale Flux Rope in the Solar Wind

open access: yesThe Astrophysical Journal Letters, 2023
A growing body of evidence from observations, theories, and simulations indicates that particles can be effectively accelerated in solar wind regions filled with dynamic small-scale flux ropes (FRs).
Weiduo Meng   +9 more
doaj   +1 more source

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