Results 71 to 80 of about 12,081 (211)

From the Sun to the Earth: The 13 May 2005 Coronal Mass Ejection [PDF]

open access: yes, 2010
We report the results of a multi-instrument, multi-technique, coordinated study of the solar eruptive event of 13 May 2005. We discuss the resultant Earth-directed (halo) coronal mass ejection (CME), and the effects on the terrestrial space environment ...
Chashei, I. V.   +111 more
core   +1 more source

A New Field Line Tracer for the Study of Coronal Magnetic Topologies

open access: yesThe Astrophysical Journal
We present a new code for the tracing of magnetic field lines and calculation of related quantities such as the squashing factor in the solar corona.
Valentin Aslanyan   +5 more
doaj   +1 more source

Development and application of a global magnetic field evolution model for the solar corona

open access: yes, 2009
Magnetic fields are fundamental to the structure and dynamics of the Sun’s corona. Observations show them to be locally complex, with highly sheared and twisted fields visible in solar filaments/prominences.
Yeates, Anthony Robinson
core  

Particle acceleration in the presence of weak turbulence at an X-type neutral point [PDF]

open access: yes, 2012
We simulate the likely noisy situation near a reconnection region by superposing many 2D linear reconnection eigenmodes. The superposition of modes on the steady state X-type magnetic field creates multiple X- and O-type neutral points close to the ...
Petkaki, P.   +4 more
core   +1 more source

In Situ Mechanisms are Necessary for Switchback Formation

open access: yesThe Astrophysical Journal Letters
Magnetic switchbacks are reversals (deflection angle θ _B > 90°) in the radial magnetic field B _r , accompanied by proton bulk flow v _p enhancement.
M. Akhavan-Tafti, S. L. Soni
doaj   +1 more source

Propagation and damping of MHD waves in the solar atmosphere

open access: yes, 2015
Quasi-periodic disturbances have been observed in the outer solar atmosphere for many years. Although first interpreted as upflows (Schrijver et al.
Kiddie, Greg
core  

Additional acceleration of solar-wind particles in current sheets of the heliosphere [PDF]

open access: yes, 2015
Particles of fast solar wind in the vicinity of the heliospheric current sheet (HCS) or in a front of interplanetary coronal mass ejections (ICMEs) often reveal very peculiar energy or velocity profiles, density distributions with double or triple peaks,
V. Zharkova   +4 more
core   +1 more source

The propagation and damping of slow magnetoacoustic waves in the solar atmosphere

open access: yes, 2012
The propagation and damping of slow magnetoacoustic waves in the solar atmosphere is investigated, with particular emphasis placed on waves with periodicities of five minutes. The basic model of a uniform temperature loop is extended by the addition of
Owen, Nicholas Robert
core  

Ubiquitous High-frequency Waves and Disturbances in the Active Region Corona Observed with Cryo-NIRSP

open access: yesThe Astrophysical Journal
The plasma of the solar corona harbors a multitude of coronal wave modes, some of which could be dissipated to provide the required energy and momentum to heat the corona and accelerate the solar wind.
Momchil E. Molnar   +6 more
doaj   +1 more source

Modeling of non-thermal fractions formed in the extended hydrogen corona at Mars

open access: yesFrontiers in Astronomy and Space Sciences
Solar forcing on the upper atmospheres of terrestrial planets occurs through both the absorption of soft X-ray and extreme ultraviolet (XUV) solar radiation and the influx of solar wind plasma resulting in the formation of an extended neutral corona ...
Valery Shematovich   +2 more
doaj   +1 more source

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