Magnetic Field Configuration in Impulsive Solar Flares Inferred from Coaligned Microwave/X‐Ray Images

1997 ◽  
Vol 489 (2) ◽  
pp. 976-991 ◽  
Author(s):  
Masanori Nishio ◽  
Kentaro Yaji ◽  
Takeo Kosugi ◽  
Hiroshi Nakajima ◽  
Takashi Sakurai
Keyword(s):  
Magnetic Field ◽  
Solar Flares ◽  
Field Configuration ◽  
Magnetic Field Configuration ◽  
X Ray

A Discussion on the physics of the solar atmosphere - Solar flares

1976 ◽  
Vol 281 (1304) ◽  
pp. 507-513 ◽  
Keyword(s):  
Magnetic Field ◽  
Particle Acceleration ◽  
Observational Data ◽  
Time Scales ◽  
Solar Atmosphere ◽  
Flux Tube ◽  
Solar Flares ◽  
Field Configuration ◽  
Magnetic Field Configuration

A summary is given of some recent observational data on solar flares. Particularly we discuss the flare build-up process and the time scales involved. We suggest as a possible magnetic field configuration a multiply kinked or supertwisted flux tube. The role of plasma turbulence and the Fermi mechanism in particle acceleration is discussed.

A Rapidly Evolving Active Region NOAA 8032 observed on April 15th, 1997

2000 ◽  
Vol 179 ◽  
pp. 233-236
Author(s):  
Shibu K. Mathew ◽  
Ashok Ambastha
Keyword(s):  
Magnetic Field ◽  
Active Region ◽  
Field Configuration ◽  
Active Region Noaa ◽  
Magnetic Field Configuration ◽  
X Ray ◽  
Field Gradients ◽  
Magnetic Field Gradients ◽  
Region Noaa ◽  
Field Lines

AbstractThe active region NOAA 8032 of April 15, 1997 was observed to evolve rapidly. The GOES X-ray data showed a number of sub-flares and two C-class flares during the 8–9 hours of its evolution. The magnetic evolution of this region is studied to ascertain its role in flare production. Large changes were observed in magnetic field configuration due to the emergence of new magnetic flux regions (EFR). Most of the new emergence occured very close to the existing magnetic regions, which resulted in strong magnetic field gradients in this region. EFR driven reconnection of the field lines and subsequent flux cancellation might be the reason for the continuous occurrence of sub-flares and other related activities.

Magnetic field configuration in impulsive solar flares revealed with Yohkoh and Nobeyama Radioheliograph

2000 ◽  
Vol 25 (9) ◽  
pp. 1791-1800 ◽  
Author(s):  
M. Nishio ◽  
T. Kosugi ◽  
K. Yaji ◽  
H. Nakajima ◽  
T. Sakurai
Keyword(s):  
Magnetic Field ◽  
Solar Flares ◽  
Field Configuration ◽  
Magnetic Field Configuration

Experimental study of force-free, collinear plasma structures

1973 ◽  
Vol 9 (1) ◽  
pp. 1-15 ◽  
Author(s):  
E. E. Nolting ◽  
P. E. Jindra ◽  
D. R. Wells
Keyword(s):  
Magnetic Field ◽  
Experimental Study ◽  
Magnetic Fields ◽  
Flow Fields ◽  
Diagnostic Techniques ◽  
Field Configuration ◽  
Magnetic Mirror ◽  
Magnetic Field Configuration ◽  
Magnetic Barrier ◽  
Magnetic Well

Detailed measurements of the trapped magnetic fields and currents in plasma structures generated by conical theta-pinches are reported. Studies of these structures interacting with a magnetic barrier, and with each other in a collision at the centre of a magnetic mirror, are reported. The magnetic well formed by the collision has been studied by simultaneous use of several diagnostic techniques. The measurements are in agreement with a force-free, collinear magnetic field configuration (Wells 1972). Arguments relating superposability and collinearity of flow fields to these observations are given.

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