Radio Studies of Solar Flares
Jeongwoo Lee
Physics Department
New Jersey Institute of Technology

 Observations              Issues

Recent solar flare studies using the Owens Valley Solar Array (OVSA)

The 1999 August 20 flare

A giant SXT loop + a small HXT loop

Microwave source vs. EUV

The morphology

The microwave light-curves

1. HXR=time-dependent Injection

The gradual part of the microwave bursts

The net impulsiave microwave radiation

Summary of the 1999 August 20 Flare

The 1993 June 3 Flare

Spectral variation

Simulation of the light curve & spectral index

The Force-Free Field extrapolation

An isotropic injection model

Model with beamed injection (n10, μ, Δμ)

Comparison chart

The 2000 March 16 Flare

The 2000 March 22 Flare

The 2001 April 6 flare

Summary