Detection of langmuir solitons: implications for type III burst emission mechanisms at 2? PE

1996 ◽  
Vol 243 (1) ◽  
pp. 195-198 ◽  
Author(s):  
G. Thejappa ◽  
R. G. Stone ◽  
M. L. Goldstein
Keyword(s):  
Type Iii ◽  
Langmuir Solitons ◽  
Burst Emission

Correlations of solar-flare electron events with radio and X-ray emission from the sun

1968 ◽  
Vol 46 (10) ◽  
pp. S757-S760 ◽  
Author(s):  
R. P. Lin
Keyword(s):  
Solar Flare ◽  
Solar Radio ◽  
Interplanetary Space ◽  
The Sun ◽  
Radio Bursts ◽  
Radio Observations ◽  
X Ray ◽  
Type Iii ◽  
Electron Event ◽  
Burst Emission

The > 40-keV solar-flare electrons observed by the IMP III and Mariner IV satellites are shown to be closely correlated with solar radio and X-ray burst emission. In particular, intense type III radio bursts are observed to accompany solar electron-event flares. The energies of the electrons, the total number of electrons, and the size of the electron source at the sun can be inferred from radio observations. The characteristics of the electrons observed in interplanetary space are consistent with these radio observations. Therefore these electrons are identified as the exciting agents of the type III emission. It has been noted that the radio and X-ray bursts are part of the flash phase of flares. The observations indicate that a striking feature of the flash phase is the production of electrons of 10–100 keV energies.

Correlated type III burst emission from distant sources on the Sun

Solar Physics ◽  
1987 ◽  
Vol 112 (1) ◽  
pp. 133-142 ◽  
Author(s):  
M. R. Kundu ◽  
N. Gopalswamy
Keyword(s):  
The Sun ◽  
Type Iii ◽  
Burst Emission

scholarly journals Evidence for electron excitation of type III radio burst emission

Solar Physics ◽  
1972 ◽  
Vol 26 (2) ◽  
pp. 468-473 ◽  
Author(s):  
H. Alvarez ◽  
F. Haddock ◽  
R. P. Lin
Keyword(s):  
Radio Burst ◽  
Electron Excitation ◽  
Type Iii ◽  
Burst Emission

scholarly journals Detection of Langmuir Solitons: Implications for Type III Burst Emission Mechanisms at 2ωPE

1996 ◽  
Vol 154 ◽  
pp. 195-198
Author(s):  
G. Thejappa ◽  
R.G. Stone ◽  
M.L. Goldstein
Keyword(s):  
Second Harmonic ◽  
Theoretical Models ◽  
Burst Source ◽  
Langmuir Waves ◽  
Type Iii ◽  
Source Regions ◽  
Envelope Solitons ◽  
Turbulence Regime ◽  
Solar Type ◽  
Langmuir Solitons

AbstractWe present the experimental verification of existing theoretical models of emission mechanisms of solar type III bursts at the second harmonic of the plasma frequency, ωpe. This study is based on the detection of Langmuir and envelope solitons by the Ulysses spacecraft inside three type III burst source regions. We show that the oscillating-two-stream instability, coherent radiation by Langmuir solitons and stochastic phase mixing of the Langmuir waves in the strong turbulence regime are the appropriate emission mechanisms at 2ωpe.

scholarly journals An estimation of the plasma parameters in the solar corona using quasi-periodic metric type III radio burst emission

2005 ◽  
Vol 431 (1) ◽  
pp. 353-357 ◽  
Author(s):  
R. Ramesh ◽  
A. Satya Narayanan ◽  
C. Kathiravan ◽  
Ch. V. Sastry ◽  
N. Udaya Shankar
Keyword(s):  
Solar Corona ◽  
Radio Burst ◽  
Plasma Parameters ◽  
Type Iii ◽  
Burst Emission

scholarly journals Flare Characteristics and Type III Bursts: A Statistical Approach

1980 ◽  
Vol 86 ◽  
pp. 465-467 ◽  
Author(s):  
C. Zanelli ◽  
P. Zlobec ◽  
U. Koren
Keyword(s):  
Magnetic Field ◽  
Statistical Approach ◽  
Primary Factor ◽  
Ambient Magnetic Field ◽  
Type Iii ◽  
Average Value ◽  
The Past ◽  
Low Correlation ◽  
Burst Emission

An analysis has been carried of the correlation of the occurrence of type III bursts and flares in spotless regions (G-flares) or covering major sunspot umbrae (Z-flares) - i.e. in magnetic conditions presumably opposite - over the past 10 years. A very low correlation of the former flares (8%) and a higher than average value for the latter flares (36% against the normally accepted 25%) shows that the ambient magnetic field of the flaring region is a primary factor for type III burst emission. The presence of a surge and of a rapid brightness rise (“flash-phase”) are recognized to be other important, if secondary, factors for type III burst generation.

scholarly journals Langmuir Solitons in Solar Type III Radio Bursts: STEREO Observations

2018 ◽  
Vol 864 (2) ◽  
pp. 122 ◽  
Author(s):  
G. Thejappa ◽  
R. J. MacDowall
Keyword(s):  
Radio Bursts ◽  
Type Iii ◽  
Solar Type ◽  
Langmuir Solitons

Some Observations on Changes in Denervated Taste Buds of Circumvallate Papillae of Rabbits

1969 ◽  
Vol 27 ◽  
pp. 308-309
Author(s):  
Sunao Fujimoto ◽  
Raymond G. Murray ◽  
Assia Murray
Keyword(s):  
Taste Buds ◽  
Taste Bud ◽  
Cell Type ◽  
Dark Cells ◽  
Type Iii ◽  
Circumvallate Papillae ◽  
Taste Bud Cells ◽  
Light Cells

Taste bud cells in circumvallate papillae of rabbit have been classified into three groups: dark cells; light cells; and type III cells. Unilateral section of the 9th nerve distal to the petrosal ganglion was performed in 18 animals, and changes of each cell type in the denervated buds were observed from 6 hours to 10 days after the operation.Degeneration of nerves is evident at 12 hours (Fig. 1) and by 2 days, nerves are completely lacking in the buds. Invasion by leucocytes into the buds is remarkable from 6 to 12 hours but then decreases. Their extrusion through the pore is seen. Shrinkage and disturbance in arrangement of cells in the buds can be seen at 2 days. Degenerated buds consisting of a few irregular cells and remnants of degenerated cells are present at 4 days, but buds apparently normal except for the loss of nerve elements are still present at 6 days.

Methionine-Specific Staining of Collagen

1982 ◽  
Vol 40 ◽  
pp. 294-295
Author(s):  
E.M. Kuhn ◽  
K.D. Marenus ◽  
M. Beer
Keyword(s):  
Amino Acids ◽  
Collagen Fibers ◽  
Type Iii Collagen ◽  
Type I ◽  
Electron Microscopic ◽  
Good Correspondence ◽  
Specific Staining ◽  
Type Iii ◽  
Different Types ◽  
Sulfur Containing

Fibers composed of different types of collagen cannot be differentiated by conventional electron microscopic stains. We are developing staining procedures aimed at identifying collagen fibers of different types.Pt(Gly-L-Met)Cl binds specifically to sulfur-containing amino acids. Different collagens have methionine (met) residues at somewhat different positions. A good correspondence has been reported between known met positions and Pt(GLM) bands in rat Type I SLS (collagen aggregates in which molecules lie adjacent to each other in exact register). We have confirmed this relationship in Type III collagen SLS (Fig. 1).

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