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Faculty and Staff

Daniel Reisenfeld

Daniel Reisenfeld

Chair, Professor of Physics & Astronomy

Phone: (406) 243-6423
Office: CHCB 130
Office Hours:

M 11:10 am – 12:00 pm, W 2:10 – 4:10 am, Th 2:10 – 3:00 pm

Current Position

Chair, Department of Physics & Astronomy (beginning Autumn 2013)


Fall 2013: 

PHSX 215:  Fundamentals of Physics w/ Calculus I

Spring 2014:

PHSX 217:  Fundamentals of Physics w/ Calculus II

Personal Summary

Dan Reisenfeld came to UM in 2004 after seven years as a research scientist at Los Alamos National Laboratory. Professor Reisenfeld leads the space science group at the University of Montana, which is involved in a number of NASA missions, including the Cassini mission to Saturn, the Genesis mission which returned a sample of the solar wind to Earth for analysis, the Deep Space One mission to Comet 19P/Borelly, and the Interstellar Boundary Explorer (IBEX) which is mapping out the boundary between our solar system and interstellar medium.  He also has a NASA grant to develope a prototype mass spectrometer for planetary science missions.  Professor Reisenfeld is the U.S. editor for the international information bulletin, Space Research Today. During his time at UM, Professor Reisenfeld has taught courses on introductory physics, modern physics, quantum mechanics, galaxies and cosmology, stellar astrophysics, and advanced laboratory physics. He is currently the UM affiliate representative for the Montana Space Grant Consortium (MSGC) and the Co-Chair of the MSGC advisory board. 


PhD in Astronomy, Harvard University, 1998

BS in Physics, Yale University, 1989

Selected Publications


Reisenfeld, D. B., R. C. Wiens, B. L. Barraclough, J.T. Steinberg, M. Neugebauer, J. Raines, T.H. Zurbuchen, “Solar Wind Conditions and Composition During the Genesis Mission as Measured by in situ Spacecraft”, Space Sci. Rev., in press, doi:10.1007/s11214-013-9960-2, 2013.

Reisenfeld, D. B., F. Allegrini, M. Bzowski, G. B. Crew, R. DeMajistre, P. Frisch, H. O. Funsten, S. A. Fuselier, P. H. Janzen, M. A. Kubiak, H. Kucharek, D. J. McComas, E. Roelof and N. A. Schwadron, “Variations in the Heliospheric Polar Energetic Neutral Atom Flux Observed by the Interstellar Boundary Explorer”, Astrophys. J., 747, 110, doi:10.1088/0004-637X/747/2/110, 2012.

Funsten, H. O., et al., “Structures and Spectral Variations of the Outer Heliosphere in IBEX Energetic Neutral Atom Maps”, SCIENCE, 326, 964- 966, doi: 10.1126/science.1180927, 2009.

McComas, D. J., et al., “Global Observations of the Interstellar Interaction from the Interstellar Boundary Explorer (IBEX), SCIENCE, 326, 959-962, doi: 10.1126/science.1180906, 2009.

Reisenfeld, D. B., Gosling, J.T., Forsyth, R.J., Riley, P., St. Cyr, O.C., “Properties of high-latitude CME-driven disturbances during Ulysses second northern polar passage”, Geophys. Res. Lett., 30, p. 8031, 10.1029/2003GL017155, 2003.

Reisenfeld, D. B., Gary, S.P., Gosling, J.T., McComas, D.J., Steinberg, J.T., Goldstein, B.E., and Neugebauer, M., “Energetics of Alpha-Proton Streaming in the High-Latitude Solar Wind”, J. Geophys. Res., 106, 5693, 2001.

Reisenfeld, D. B., McComas, D. J., and Steinberg, J. T. “Evidence of a Solar Origin for Pressure Balance Structures in the High-Latitude Solar Wind”, Geophys. Res. Lett., 26, 1805, 1999.


US Editor, Space Research Today

UM Affiliate Representative, Montana Space Grant Consortium


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