When:
July 24, 2017 @ 2:30 pm – 3:30 pm
2017-07-24T14:30:00-04:00
2017-07-24T15:30:00-04:00
Where:
Main Yurt

Dr. George Doschek, NRL & NOVAC

Monday, July 24 , 2017, 2:30 pm in the Yurt

Solar Physics and the Solar Eclipse Experience

Summary

A solar eclipse allows us to see the solar corona in all of its glory right down to the solar chromosphere. I will discuss the solar physics that determines the shape of the corona during the eclipse. The corona’s shape and structures within it depend on the Sun’s magnetic field and how it evolves during the solar cycle. I will discuss how emergence of magnetic flux determines solar activity including the sunspot number, the appearance of prominences, and occurrence of flares and coronal mass ejections. I will also discuss prospects for the next solar cycle. There are many mysteries concerning the Sun’s magnetic field and how it energizes solar activity what its role is in heating and maintaining the corona.

Biography

Dr. George Doschek is a NOVAC member who is a Research Physicist in the
Solar & Heliospheric Physics Branch in the Space Science Division of the Naval Research Laboratory (NRL). George Doschek’s research areas are solar physics, atomic physics, and solar physics spectroscopic space instrumentation. He has analyzed data from many solar space missions and has been a key player in the design and construction of new solar X-ray and extreme-ultraviolet solar space experiments. He was the Principal Investigator to NASA for the international Extreme-ultraviolet Imaging Spectrometer (EIS) on the Hinode spacecraft and was the NRL Principal Investigator for the international X-ray Bragg crystal spectrometers on the Yohkoh spacecraft.