1. NIRFI Radiophysical Research Institute of the Ministry of Education and Science was founded in in Gorky, now Nizhny Novgorod.
Short-term Coronal Mass Ejections’ Prediction Technique Using Solar Radio Emission Olga Sheiner, Vladimir Fridman Radiophysical Research Institute (NIRFI) Nizhny Novgorod
Radio astrophysical observatory “Zimenki”

2. Why radio observations?
mm-waves
Chromosphere
cm-waves: up chromosphere & corona bottom
dm-waves:
low corona
metric waves:
corona
Visible:
Photosphere
Why radio observations?

3. 2-3 days before CME registration
MICROWAVE EMISSION
2-3 days before CME registration
Growth of amplitude of long-period pulsations with a period of more than 20 min in cm solar radio emission 3 days before registration Coronal Mass Ejections on LASCO

4. 8-5 hrs before CME registration
MICROWAVE EMISSION
8-5 hrs before CME registration
The detection of steady narrow-band spectral structure in the intensity of microwave radio emission 5-8 hours prior to the event.
f ~ MHz
F ~ 1 sfu
August 12, 1989
NOAA/USAF 5638 (S18W90)
CME 12:59 UT
RT-22 KrAO
Spatial resolution 3-4‘
Sweeping spectrograph
14-17GHz
1 spectrum each second
100MHz spectral resolution

5. Halo CMEs broadband precursors
MICROWAVE PRECURSORS
2 hrs before CME registration
Halo CMEs broadband precursors
CME
CME
CME

6. Qualitative algorithm
~2-3 days
~ 8-5 hours
~ 2 hours
CME
T > 20 min long-period pulsations cm radio emission
Sporadic emission;
Precursors;
MHz spectral feature in S-component;