Department of Climate and Space Sciences and Engineering in the College of Engineering at the University of Michigan

CLaSP Seminar Series - Professor Craig DeForest

Date: February 8, 2018
Time: 3:30 pm - 5:00 pm
Location: SRB Auditorium, room 2246

Our guest for this week's CLaSP Seminar Series will be Professor Craig DeForest, of the Southwest Research Institute and the University of Colorado Boulder. Please join us! 

Title: "A new Paradigm of the Young Solar Wind"

Abstract: Since the 1960s, solar coronal physics and space physics have been divided by the instrumentation that each field uses to study essentially the same plasma.  Solar wind studies have used primarily in situ sampling, which reveals great detail and physical “ground truth” over a tiny cross-section of the solar wind; while coronal studies have used primarily remote imaging such as coronagraphic movies, which reveal large scale evolution at a cost of limiting measurements to (in most cases) a photometric measure of line-of-sight electron density.  As a result, each region of the solar system has become a separate scientific specialty with its own communities, jargon, and intuitions — even though the two fields are intimately connected.  Now, the two fields are colliding in the region of the poorly-understood young solar wind, just above the solar corona.  Parker Solar Probe is an audacious mission to bring in-situ methods to coronal physics; while remote imaging of Thomson scattered light is now beginning to reveal the large-scale anatomy of the young solar wind itself.  I will discuss several recent imaging results on the structure and evolution of the young solar wind itself, and its origin in the outer corona.  These results — tantalizing though they are, within the limits of current instrumentation — are bringing into focus a new understanding of the top of the corona and the beginnings of the solar wind.

Biography: Craig DeForest is the Heliophysics Section leader in SwRI’s Department of Space Studies, in Boulder, CO, and an adjunct professor in the University of Colorado Astronomy and Planetary Science department. He has over 25 years experience in solar physics, instrumentation, data analysis, modeling, and project management. He analyzed the first data from the MSSTA sounding rocket payload that prototyped modern EUV imaging telescopes, operated SOHO/MDI throughout the early SOHO mission, and pioneered solar use of then-novel analysis techniques in common use today. He standardized and promoted the use of computer vision techniques to reduce solar data, and invented and/or first reduced to practice the techniques of “fluxon modeling” for magnetohydrodynamics and “stereoscopic magnetography” for rapid measurement of the Zeeman splitting over an image field. More recently, he developed the first fully successful technique for quantitative analysis of heliospheric images. Instrument work includes the SHaZaM magnetograph, RAISE sounding rocket, DASH heliospheric imager, the SPICE instrument for Solar Orbiter, and the SSIPP suborbital/balloon miniature observatory concept. He has successfully managed many instrumentation, analysis, and software efforts and is known for his ability to extract meaningful information from noisy data sets.

Upcoming Events

November 22nd
12:00 am - 11:59 pm
Thanksgiving - No Seminar
November 29th
3:30 pm - 5:00 pm
CLaSP Seminar Series - Dr. Valentin Pillet
December 6th
3:30 pm - 5:00 pm
CLaSP Seminar Series - Prof. Justin Kasper
More Events