Electron acceleration at quasi-parallel shocks in the solar corona and its signature in solar Type II radio bursts

1994 ◽  
Vol 90 ◽  
pp. 577 ◽  
Author(s):  
G. Mann ◽  
H. Luehr
Keyword(s):  
Solar Corona ◽  
Electron Acceleration ◽  
Radio Bursts ◽  
Type Ii ◽  
Type Ii Radio Bursts ◽  
Solar Type

scholarly journals Electron Acceleration at Quasi-Parallel Shocks in The Solar Corona and Its Signature in Solar Type II Radio Bursts

1994 ◽  
Vol 142 ◽  
pp. 577-581
Author(s):  
G. Mann ◽  
H. Lühr
Keyword(s):  
Magnetic Field ◽  
Solar Corona ◽  
Radio Bursts ◽  
Type Ii ◽  
Radio Radiation ◽  
Earth’S Bow Shock ◽  
Type Ii Radio Bursts ◽  
Solar Type ◽  
Field Geometry ◽  
The Magnetic Field

AbstractRecently, strong large amplitude magnetic field structures (SLAMS) have been observed as a common phenomenon in the vicinity of the quasi-parallel region of Earth’s bow shock. A quasi-parallel shock transition can be considered as a patchwork of SLAMS. Using the data of the AMPTE/IRM magnetometer the properties of SLAMS are studied. Within SLAMS the magnetic field is strongly deformed and, thus, the magnetic field geometry is locally swung into a quasi-perpendicular regime. Therefore, electrons can locally be accelerated to high energies within SLAMS. Assuming that SLAMS also exist in the vicinity of supercritical, quasi-parallel shocks in the solar corona, they are able to generate radio radiation via the enhanced Langmuir turbulence excited by the accelerated electrons. Since SLAMS are connected with strong density enhancements, the aforementioned mechanism can explain the multiple-lane structure often occurred in solar Type II radio bursts.Subject headings: acceleration of particles — Earth — shock waves — Sun: corona — Sun: radio radiation

scholarly journals AN OBSERVATIONAL REVISIT OF BAND-SPLIT SOLAR TYPE-II RADIO BURSTS

2015 ◽  
Vol 812 (1) ◽  
pp. 52 ◽  
Author(s):  
Guohui Du ◽  
Xiangliang Kong ◽  
Yao Chen ◽  
Shiwei Feng ◽  
Bing Wang ◽  
...  
Keyword(s):  
Radio Bursts ◽  
Type Ii ◽  
Type Ii Radio Bursts ◽  
Solar Type

Polarization and Fragmentation of Solar Type II Radio Bursts

2003 ◽  
Vol 592 (2) ◽  
pp. 1234-1240 ◽  
Author(s):  
G. Thejappa ◽  
P. Zlobec ◽  
R. J. MacDowall
Keyword(s):  
Radio Bursts ◽  
Type Ii ◽  
Type Ii Radio Bursts ◽  
Solar Type

The solar type II radio bursts of 7 March 2012: Detailed simulation analyses

2014 ◽  
Vol 119 (8) ◽  
pp. 6042-6061 ◽  
Author(s):  
J. M. Schmidt ◽  
Iver H. Cairns ◽  
V. V. Lobzin
Keyword(s):  
Radio Bursts ◽  
Type Ii ◽  
Detailed Simulation ◽  
Type Ii Radio Bursts ◽  
Solar Type

scholarly journals Height of shock formation in the solar corona inferred from observations of type II radio bursts and coronal mass ejections

2013 ◽  
Vol 51 (11) ◽  
pp. 1981-1989 ◽  
Author(s):  
N. Gopalswamy ◽  
H. Xie ◽  
P. Mäkelä ◽  
S. Yashiro ◽  
S. Akiyama ◽  
...  
Keyword(s):  
Solar Corona ◽  
Coronal Mass Ejections ◽  
Shock Formation ◽  
Radio Bursts ◽  
Type Ii ◽  
Type Ii Radio Bursts

Statistical Characteristics of CMEs and Flares Associated with Solar Type II Radio Bursts

Solar Physics ◽  
2003 ◽  
Vol 217 (2) ◽  
pp. 301-317 ◽  
Author(s):  
A. Shanmugaraju ◽  
Y.-J. Moon ◽  
M. Dryer ◽  
S. Umapathy
Keyword(s):  
Statistical Characteristics ◽  
Radio Bursts ◽  
Type Ii ◽  
Type Ii Radio Bursts ◽  
Solar Type

scholarly journals Catalogue of solar type II radio bursts observed from September 1990 to December 1993 and their statistical analysis

1996 ◽  
Vol 119 (3) ◽  
pp. 489-498 ◽  
Author(s):  
G. Mann ◽  
A. Klassen ◽  
H.-T. Classen ◽  
H. Aurass ◽  
D. Scholz ◽  
...  
Keyword(s):  
Statistical Analysis ◽  
Radio Bursts ◽  
Type Ii ◽  
Type Ii Radio Bursts ◽  
Solar Type

On the Possibility of Radio Emission from Quasi-parallel and Quasi-perpendicular Propagation of Shocks

2000 ◽  
Vol 179 ◽  
pp. 259-262
Author(s):  
A. Shanmugaraju ◽  
S. Umapathy
Keyword(s):  
Magnetic Field ◽  
Radio Emission ◽  
Radio Bursts ◽  
Type Ii ◽  
Simple Analysis ◽  
Type Ii Radio Bursts ◽  
Solar Type ◽  
Type Ii Bursts

AbstractA set of 21 solar type II radio bursts observed using Hiraiso radio spectrograph have been analysed to study the direction of propagation of coronal shocks. A simple analysis is carried out to find the approximate angle between the shock normal and magnetic field by solving the Rankine-Hugoniot MHD relation with assumption of Alfven speed and plasma beta. From this analysis, it is suggested that both quasi-parallel shocks (favourable) and quasi-perpendicular shocks can generate type II bursts depending upon the circumstances of the corona.

Observations of Near-Simultaneous Split-Band Solar Type-II Radio Bursts at Low Frequencies

Solar Physics ◽  
2015 ◽  
Vol 290 (9) ◽  
pp. 2479-2489 ◽  
Author(s):  
K. Hariharan ◽  
R. Ramesh ◽  
C. Kathiravan
Keyword(s):  
Radio Bursts ◽  
Type Ii ◽  
Low Frequencies ◽  
Type Ii Radio Bursts ◽  
Solar Type ◽  
Split Band
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