Solar Type II Radio Bursts and CME-Driven Shocks
Published:Dec 26, 2025 03:46
•1 min read
•ArXiv
Analysis
This paper investigates the generation of solar type II radio bursts, which are emissions caused by electrons accelerated by coronal shocks. It combines radio observations with MHD simulations to determine the location and properties of these shocks, focusing on their role in CME-driven events. The study's significance lies in its use of radio imaging data to pinpoint the radio source positions and derive shock parameters like Alfvén Mach number and shock obliquity. The findings contribute to a better understanding of the complex shock structures and the interaction between CMEs and coronal streamers.
Key Takeaways
- •Type II radio bursts are valuable for studying CME-driven shocks.
- •The study uses radio imaging and MHD simulations to analyze shock parameters.
- •Type II bursts are often located near or inside coronal streamers.
- •Super-critical shocks are found at the locations of type II bursts.
- •CME-streamer interaction is crucial for generating type II bursts.
Reference
“The study found that type II bursts are located near or inside coronal streamers, with super-critical shocks (3.6 ≤ MA ≤ 6.4) at the type II locations. It also suggests that CME-streamer interaction regions are necessary for the generation of type II bursts.”