Research interests include astrophysical fluid dynamics with emphasis on convective dynamics and scale selection, turbulence, the excitation of the solar/stellar pmodes, and the origin of solar/stellar irradiance variations. Investigations range from studying highly simplified turbulent analogs based on point vortex motions to highly realistic simulations of radiative magnetohydrodynamics, spectral synthesis, and spectropolarimetric inversions. Served as instrument scientist for the Precision Solar Photometric Telescope (PSPT) at Mauna Loa Solar Observatory (MLSO) over its period of operation from 1999 to 2015, and currently lead the Critical Science Plan effort for the National Solar Observatory's (NSO's) upcoming 4m solar telescope, the Daniel K. Inouye Solar Telescope (DKIST).
ASTR 1040  Accelerated Introductory Astronomy 2
Primary Instructor

Spring 2019 / Fall 2019
Covers principles of modern astronomy summarizing our present knowledge about the Sun, stars, birth and death of stars, neutron stars, black holes, galaxies, quasars, and the organization and origins of the universe. May require nighttime observing sessions at SommersBausch Observatory. Required in ASTR major/minor. Includes a recitation. Taught at a higher intellectual level including a significant amount of quantitative analysis. Same as ASTR 1020 and ASTR 1200.
ASTR 3760  Solar and Space Physics
Primary Instructor

Spring 2018
Explores the physical processes linking the Sun and planets, emphasizing solar radiative and particulate variability and the response of planetary atmospheres and magnetospheres. Topics include the solar dynamo, solar wind, coronal mass ejections, cosmic ray modulation, magnetospheres, aurora, the space environment, and climate variability. Recommended prerequisite: PHYS 3310. Elective for APS major and minor.
ASTR 5540  Mathematical Methods
Primary Instructor

Fall 2018
Presents an applied mathematics course designed to provide the necessary analytical and numerical background for courses in astrophysics, plasma physics, fluid dynamics, electromagnetism, and radiation transfer. Topics include integration techniques, linear and nonlinear differential equations, WKB and Fourier transform methods, adiabatic invariants, partial differential equations, integral equations, and integrodifferential equations. Draws illustrative examples from the areas of physics listed above. Same as ATOC 5540.
ATOC 5540  Mathematical Methods
Primary Instructor

Fall 2018
Applied mathematics course; provides necessary analytical background for courses in plasma physics,fluid dynamics, electromagnetism, and radiative transfer. Covers integration techniques, linear and nonlinear differential equations, WKB and Fourier transform methods, adiabatic invariants, partial differential equations, integral equations, and integrodifferential equations. Same as ASTR 5540.