Research Interests: Multiwavelength observational astronomy of cataclysmic variable binary stars, nova shells, accretion disks and outflows, X-ray binaries and black holes, common envelope evolution, stellar magnetism, extrasolar planets, starburst galaxies, quasars, time-series analysis; also spaceflight and astronomical instrumentation.
At right: Some images from
Fresno State's Campus Observatory.
If students need to see Professor Ringwald outside of office hours, please call or e-mail first.
Here is the department brochure that I edited. It's a pdf file that you can read with Adobe Acrobat Reader, a free program available here. Here is a recruiting slide.
Last updated 2019 April 10. Web page by Professor Ringwald
Department of Physics, California State University, Fresno. Please read this disclaimer.