Meet Recent Recipients of the Van Nattan-Hansen-Anderson Scholarship
Where Are They Now?
Checking in on Past Van Nattan-Hansen-Anderson Scholarship Winners
Dr. C. Nick Arge

Dr. Arge is the head of the Solar Physics Laboratory (SPL) at NASA Goddard Space Flight Center, one of the world’s largest solar physics laboratories, comprising approximately 80 solar scientists, postdoctoral researchers, students, and support staff. Prior to that, he worked at the University of Colorado & NOAA/Space Weather Prediction Center (SWPC) from 1996 to 2003, and then at the Air Force Research Laboratory (AFRL), Space Vehicles Directorate, from 2004 to 2016.
Dr. Arge received his B.S. in Physics from the University of Arizona in 1985, his M.S. degree in Physics from the University of Minnesota in 1988, and his Ph.D. in Physics from the University of Delaware in 1997. His research interests include the physics of the corona and solar wind, particularly in modeling them for both fundamental and applied purposes (e.g., space weather forecasting). Dr. Arge is the lead developer of the Wang-Sheeley-Arge (WSA) coronal and solar wind model, which, along with the Enlil solar wind model, was transitioned into operations at the National Weather Service (NWS) in 2011. The coupled WSA+Enlil model is the first space weather model to be transitioned to operations at the NWS. Dr. Arge is a member of the American Astronomical Society (AAS), the Solar Physics Division of AAS, and the American Geophysical Union (AGU).
He received the Van Nattan-Hansen-Anderson Scholarship twice in the early 1980s.
Dr. Mark Bottorff

Dr. Bottorff was a DAS Associate member in the 1970s and is familiar to DAS members as a companion at local star parties and a frequent speaker at DAS general meetings. He is an Assistant Professor of Physics at Southwestern University, Georgetown, Texas. Mark’s research over the years has focused on quasars, the supermassive black holes that serve as the most powerful energy sources in the universe. He began studying quasars while earning his Ph.D. and working as a research assistant at the University of Kentucky. He stayed for three years as a post-doctoral researcher and wrote papers based on quasar information gathered by the Hubble Space Telescope.
Anthony Gojanovic, M.S.
Mr. Gojanovic received his B.A. in Mathematics from the University of Colorado, Boulder. He went on to obtain an M.S. degree in Mathematics and Computer Science at the University of Denver and was a statistician for 30 years at Coors Brewing Company in Golden, Colorado, collaborating on a wide range of research projects that spanned from optimizing barley harvests to understanding the antioxidant properties in fermented beverages. One of his notable accomplishments was the development of a simulation program to determine survival probabilities of a lander mission on Mars in collaboration with the University of Denver and Lockheed Martin. Currently, he is semi-retired, the owner of A&G Statworks, and a volunteer member of the DAS. His current interests include computational astronomy and cosmology.
Dr. Joseph Pesce

Dr. Pesce received his B.A. in Physics from the University of Colorado, Boulder. He went on to obtain an M.Sc. and Ph.D. in Astrophysics from the University of Cambridge and the International School for Advanced Studies in Trieste, Italy.
Dr. Pesce is a Program Director at the National Science Foundation, Directorate for Mathematical & Physical Sciences, Division of Astronomical Sciences. An Astrophysicist with 30 years of experience, his primary areas of interest is in the external environments of galaxies hosting super massive black holes (Active Galactic Nuclei – AGN – in particular blazars); formation and evolution of AGN and galaxies; intergalactic medium in clusters of galaxies; imaging and spectroscopy of AGN (optical, IR, UV, X-ray); multiwavelength (radio to gamma) monitoring studies of blazars; cool stars and stellar atmospheres (AGB stars, supernovae progenitors).
He is the Program Officer responsible for the National Radio Astronomy Observatory (NRAO), the Atacama Large Millimeter/submillimeter Array (ALMA), the Central Development Laboratory (CDL), the Very Large Array (VLA), and the Very Long Baseline Array (VLBA.
Dr. Pesce remains an active member of the DAS and has recently joined the VNH Committee to assist in selecting future scholarship recipients.
Dr. Brad Schaefer

Dr. Schaefer received his Ph.D in Astronomy and Astrophysics from MIT in 1983. He is a Professor Emeritus of Physics and Astronomy at Louisiana State University. A primary interest of his research has been to utilize the photometry of exploding objects to obtain results of interest for cosmology. He was involved in the exploration of gamma-ray bursts (GRBs) to use as standard candles in cosmological investigations.
James Zavislan, Ph.D.

Dr. Zavislan chose not to enter the field of physics and astronomy, but used his B.S. Degree in Optics and his Ph.D. in Optics in 1988 (from the University of Rochester) to do research improving the performance of optical imaging systems for biomedical, material science, and remote sensing applications. He is an inventor or co-inventor on 42 issued U.S. patents, an author or co-author on 20 papers, and the co-editor of a book on optical systems. His current area of research is skin imaging. He holds two associate professorships at The Institute of Optics, University of Rochester, in New York.













