Radio evidence for an expanding magnetic arch beyond 20 solar radii

Solar Physics ◽  
1975 ◽  
Vol 42 (1) ◽  
pp. 179-181 ◽  
Author(s):  
R. G. Stone ◽  
Joseph Fainberg
Keyword(s):  
Magnetic Arch

The dynamics of supersonic plasma flow interaction with the magnetic arch

2019 ◽  
Vol 61 (3) ◽  
pp. 035001 ◽  
Author(s):  
M E Viktorov ◽  
S V Golubev ◽  
A V Vodopyanov
Keyword(s):  
Plasma Flow ◽  
Flow Interaction ◽  
Supersonic Plasma ◽  
Magnetic Arch

scholarly journals The Coronal‐dimming Footprint of a Streamer‐Puff Coronal Mass Ejection: Confirmation of the Magnetic‐Arch‐Blowout Scenario

2007 ◽  
Vol 661 (1) ◽  
pp. 543-550 ◽  
Author(s):  
Ronald L. Moore ◽  
Alphonse C. Sterling
Keyword(s):  
Coronal Mass Ejection ◽  
Mass Ejection ◽  
Magnetic Arch ◽  
Coronal Dimming

Kinematical force-free fields of a magnetic arch

1997 ◽  
Vol 18 (9) ◽  
pp. 865-870 ◽  
Author(s):  
Feng Quingzeng
Keyword(s):  
Free Fields ◽  
Magnetic Arch

Observation of plasma microwave emission during the injection of supersonic plasma flows into magnetic arch

2017 ◽  
Vol 59 (7) ◽  
pp. 075001 ◽  
Author(s):  
M E Viktorov ◽  
D A Mansfeld ◽  
A V Vodopyanov ◽  
N D Kiryuhin ◽  
S V Golubev ◽  
...  
Keyword(s):  
Microwave Emission ◽  
Plasma Flows ◽  
Supersonic Plasma ◽  
Plasma Microwave ◽  
Magnetic Arch

scholarly journals Supersonic plasma flow injection across the magnetic arch in a table-top laboratory setup

2019 ◽  
Vol 1400 ◽  
pp. 077034
Author(s):  
M E Viktorov ◽  
S V Golubev ◽  
A V Vodopyanov
Keyword(s):  
Flow Injection ◽  
Plasma Flow ◽  
Laboratory Setup ◽  
Supersonic Plasma ◽  
Magnetic Arch

scholarly journals 80 MHz Radioheliograph Evidence on Moving Type IV Bursts and Coronal Magnetic Fields

1971 ◽  
Vol 43 ◽  
pp. 616-641 ◽  
Author(s):  
S. F. Smerd ◽  
G. A. Dulk
Keyword(s):  
Magnetic Field ◽  
Synchrotron Radiation ◽  
Magnetic Fields ◽  
Magnetized Plasma ◽  
Relativistic Electrons ◽  
Radiation Mechanism ◽  
Type Iv ◽  
Coronal Magnetic Fields ◽  
Field Lines ◽  
Magnetic Arch

The characteristics of 12 moving type IV bursts observed with the 80 MHz radioheliograph at the Culgoora Observatory between February 1968 and April 1970 are summarized.Three classes of moving sources can be recognized; they are described as: (1) Expanding arch; (2) Advancing front; (3) Isolated source.The first class has been identified (Wild, 1969) with the expansion of a magnetic arch or loop; the second class is here identified with an advancing MHD disturbance which may accelerate the radiating electrons in situ when moving at greater than Alfvén speed; the third with solar ejecta in the form of magnetized plasma clouds, or plasmoids. In all cases the radiation mechanism is probably synchrotron radiation from mildly relativistic electrons; energies in the range ∼0.1 to ∼1 MeV could account for the observed strong circular polarizations.With an expanding magnetic arch, source and magnetic-field movement are inseparable; the field remains a closed loop throughout the event. The MHD front probably moves largely along and the plasmoids between the open magnetic-field lines of unipolar regions or helmet structures. In the latter case it is the internal magnetic field – possibly toroidal – of the moving plasmoid that determines the polarization of the synchrotron radiation. A preliminary comparison of moving type IV sources with Newkirk-Altschuler maps of coronal magnetic fields shows suitably located closed loops for 2 events identified as expanding magnetic arches and unipolar open field lines along the path of a moving source identified as a plasmoid.

Simulation of Microwave Emission from the Magnetic Arch with Growing Millimeter Spectrum

2017 ◽  
Vol 57 (8) ◽  
pp. 1028-1037 ◽  
Author(s):  
A. S. Morgachev ◽  
Yu. T. Tsap ◽  
V. V. Smirnova ◽  
G. G. Motorina ◽  
S. A. Kuznetsov
Keyword(s):  
Microwave Emission ◽  
Magnetic Arch

scholarly journals Spatial distributions of plasma parameters in conventional magnetron discharges in presence of nanoparticles

2020 ◽  
Vol 86 (5) ◽  
Author(s):  
A. Chami ◽  
C. Arnas
Keyword(s):  
Magnetic Field ◽  
Metallic Nanoparticles ◽  
Plasma Potential ◽  
Plasma Parameters ◽  
Temperature Distributions ◽  
Charged Nanoparticles ◽  
Field Geometry ◽  
Electron Density And Temperature ◽  
The Magnetic Field ◽  
Magnetic Arch

Two-dimensional spatial measurements of magnetic field and plasma parameters have been performed in conventional magnetron DC discharges during the formation of metallic nanoparticles. Correlations between the electron density and temperature distributions, and the magnetic field geometry and strength have been established. A sharp increase of the plasma potential is found on the edge of the last magnetic arch followed by a decrease towards the anode plate and edges. It is shown that the spatial variation of the plasma potential is at the origin of a potential well that can trap negatively charged nanoparticles.

Multiple Magnetic-Loop Structure of a Type IV Solar Radio Outburst

1971 ◽  
Vol 2 (1) ◽  
pp. 60-62 ◽  
Author(s):  
R. T. Stewart ◽  
K. V. Sheridan
Keyword(s):  
Radio Emission ◽  
Solar Radio ◽  
Magnetic Loop ◽  
Multiple Source ◽  
Loop Structure ◽  
Circularly Polarized ◽  
Type Iv ◽  
Radio Outburst ◽  
Source Structure ◽  
Magnetic Arch

In this paper we discuss 80 MHz heliograph observations of the multiple source structure and polarization of a type IV solar radio outburst on 1970 November 16. At times during the event six sources were present. Three of these were highly circularly polarized in a L.H. sense and two in a R.H. sense. The sixth source was extended and had oppositely polarized edges. From the source behaviour we conclude that the radio emission came from two expanding and one stationary magnetic arch.

scholarly journals Excitation of electromagnetic waves in dense plasma during the injection of supersonic plasma flows into magnetic arch

2016 ◽  
Author(s):  
M. E. Viktorov ◽  
S. V. Golubev ◽  
D. A. Mansfeld ◽  
A. V. Vodopyanov
Keyword(s):  
Electromagnetic Waves ◽  
Dense Plasma ◽  
Plasma Flows ◽  
Supersonic Plasma ◽  
Magnetic Arch
Sign in / Sign up

Export Citation Format

Share Document