1. Overview of the Sun Jie Zhang Art Poland
CSI 769/ ASTR Fall 2005
Lecture Aug. 30, 2005
Overview of the Sun
Jie Zhang
Art Poland
The Sun is the ultimate and often immediate driver of the space weather

2. Today’s Sun

3. Today’s Sun

4. What will be covered in the solar end?
Structure of the Sun
Magnetic field of the Sun
Activity of the Sun

5. Structure of the Sun (4) Corona (3) Transition Region between
Corona and Chromosphere
(2) Chromosphere
(1) Photosphere
Solar Atmosphere
surface
(3) Convection Zone
(2) Radiative Zone
(1) Core
Inside the Sun

6. Structure of the Sun

7. Magnetic Field of the Sun
Helio-seismology
Surface magnetic field
Sunspot
Magnetogram
Zeeman Effect
Hale’s polarity law
Solar Cycle
Sunspot cycle
Butterfly diagram
Solar activity cycle
Solar Dynamo
Differential rotation
Dynamo theory
SOHO/MDI

8. Butterfly Diagram

9. Activity of the Sun Flares In all wavelengths Classification
Flare model
Coronal Mass Ejections
E, K, F corona
Streamer
CMEs
Models
Energetic Particle Events
Impulsive & Gradual
Particle Acceleration
Magnetic Reconnection

10. Homework and Project Homework: 2
Project: part of the comprehensive project