Quantifying the Magnetic Structure of a Coronal Shock Producing a Type II Radio Burst
arXiv:2203.11042 · doi:10.3847/1538-4357/ac5fac
Abstract
Type II radio bursts are thought to be produced by shock waves in the solar atmosphere. However, what magnetic conditions are needed for the generation of type II radio bursts is still a puzzling issue. Here, we quantify the magnetic structure of a coronal shock associated with a type II radio burst. Based on the multi-perspective extreme-ultraviolet observations, we reconstruct the three-dimensional (3D) shock surface. By using a magnetic field extrapolation model, we then derive the orientation of the magnetic field relative to the normal of the shock front () and Alfvén Mach number () on the shock front. Combining the radio observations from Nancay Radio Heliograph, we obtain the source region of the type II radio burst on the shock front. It is found that the radio burst is generated by a shock with and a bimodal distribution of . We also use the Rankine-Hugoniot relations to quantify the properties of the shock downstream. Our results provide a quantitative 3D magnetic structure condition of a coronal shock that produces a type II radio burst.
arXiv comment18 Pages, 10 figures, accepted for publication in ApJ
References in corpus (37)
- Differential Emission Measure Analysis of Multiple Structural Components of Coronal Mass Ejections in the Inner Corona
- How Many CMEs Have Flux Ropes? Deciphering the Signatures of Shocks, Flux Ropes, and Prominences in Coronagraph Observations of CMEs
- Quantitative Measurements of CME-driven Shocks from LASCO Observations
- Observations and Interpretation of a Low Coronal Shock Wave Observed in the EUV by the SDO/AIA
- Particle Acceleration by a Solar Flare Termination Shock
- Large-scale Coronal Propagating Fronts in Solar Eruptions as Observed by the Atmospheric Imaging Assembly on Board the Solar Dynamics Observatory\,--\,An Ensemble Study
- SunPy - Python for Solar Physics
- Imaging Spectroscopy of Solar Radio Burst Fine Structures
- On the Radio Polarization Signature of Efficient and Inefficient Particle Acceleration in Supernova Remnant SN 1006
- Deriving the properties of coronal pressure fronts in 3-D: application to the 17 May 2012 ground level enhancement
- The formation heights of coronal shocks from 2D density and Alfvén speed maps
- Multiple Regions of Shock-accelerated Particles during a Solar Coronal Mass Ejection
- Electron acceleration to relativistic energies at a strong quasi-parallel shock wave
- Shock location and CME 3D reconstruction of a solar type II radio burst with LOFAR
- Understanding the twist distribution inside magnetic flux ropes by anatomizing an interplanetary magnetic cloud
- A solar type II radio burst from CME-coronal ray interaction: simultaneous radio and EUV imaging
- A broken solar type II radio burst induced by a coronal shock propagating across the streamer boundary
- A Type II Radio Burst without a Coronal Mass Ejection
- Understanding CME and associated shock in the solar corona by merging multi wavelengths observation
- Identification of Super- and Sub-critical Regions in Shocks driven by Coronal Mass Ejections
- Evolution of the Alfvén Mach number associated with a coronal mass ejection shock
- Plasma physical parameters along Coronal Mass Ejection-driven shocks: I observations
- Physical Conditions of Coronal Plasma at the transit of a Shock driven by a Coronal Mass Ejection
- Effects of shock and turbulence properties on electron acceleration
- Measure the Propagation of a halo CME and Its Driven Shock with the Observations from a Single Perspective at Earth
- Analyses of Laser Propagation Noises for TianQin Gravitational Wave Observatory Based on the Global Magnetosphere MHD Simulations
- Partial Reflection and Trapping of a Fast-mode Wave in Solar Coronal Arcade Loops
- Sub-second time evolution of Type III solar radio burst sources at fundamental and harmonic frequencies
- Investigating the Conditions of the Formation of a Type II Radio Burst on 2014 January 8
- First Determination of 2D Speed Distribution within the Bodies of Coronal Mass Ejections with Cross-Correlation Analysis
- Three-dimensional reconstruction of multiple particle acceleration regions during a coronal mass ejection
- Parametric simulation studies on the wave propagation of solar radio emission: the source size, duration, and position
- Super- and Sub-critical Regions in Shocks driven by Radio-Loud and Radio-Quiet CMEs
- A Model for Radio Emission from Solar Coronal Shocks
- Three-Dimensional Reconstructions of Coronal Wave Surfaces Using a New Mask-Fitting Method
- The Broken Lane of a Type II Radio Burst Caused by Collision of a Coronal Shock with a Flare Current Sheet
- Suprathermal electron acceleration by a quasi-perpendicular shock: simulations and observations