Julie Rathbun

Assoc Professor, Physics

Degrees: PhD, Astronomy, Cornell University, 2000; MS, Astronomy, Cornell University, 1997; BS, Physics, State University of New York at Buffalo, 1994.

Office: Physics, Appleton Hall #129

Office Hours: See webpage below

Phone: 909/748-8661




Areas of Expertise

  • PhD is in Astronomy
  • Current research is in Planetary Science (Geology and Astronomy)
  • Expert in surfaces of solar system satellites

Description of Research

I have been using Galileo Photopolarimeter-Radiometer (PPR) and ground-based data to study volcanism on Jupiter's moon, Io. Io is the most volcanically active body in the Solar System, putting out more than 40 times the amount of energy that the Earth does. (And Io is only about the size of our moon!) I’m currently using data from NASA’s New Horizons spacecraft to study Io and finishing a study of Jupiter’s moon Europa using PPR data.

Courses Offered at Redlands

  • General Physics 2 & 3
  • Electricity and Magnetism
  • Quantum Mechanics
  • Senior Seminar
  • Astronomy
  • Cosmorphology

Degrees Held

  • BS, Physics, State University of New York at Buffalo, 1994
  • MS, Astronomy, Cornell University, 1997
  • PhD, Astronomy, Cornell University, 2000

Relevant Work Experience

Postdoctoral Fellow at Lowell Observatory (1999-2001)

Awards, Honors and Grants

  • 2006 University of Redlands Faculty Award for Outstanding Research
  • Io in the Near Infrared: observations from New Horizons and comparison to Galileo PPR and NIMS; NASA Jupiter Data Analysis Program 2009-2012; Julie Rathbun, PI
  • Studying the Galilean satellites with Galileo and ground-based data: Io's volcanoes from the ground and incorporating Galileo PPR data into ArcGIS; NASA Outer Planets Research program 2008-2010; Julie Rathbun, PI
  • Geologic Mapping of Io: GIS Database & Regional mapping; NASA Outer Planets Research program 2008-2011; David Williams, PI
  • Io Volcanism, and Galilean Satellite Surface Temperatures; NASA Planetary Geology and Geophysics Program 2007-2010; John Spencer, PI
  • Modeling volcanism on Io using groundbased and Galileo data; NASA Outer Planets Research Program 2006-2009; Julie Rathbun, PI
  • Io Volcanism, and Galilean Satellite Surface Temperatures; NASA Planetary Geology and Geophysics Program 2004-2007; John Spencer, PI
  • Mutual occultations between the Galilean satellites: Two-dimensional imaging of Ionian volcanoes, particularly Loki which may erupt predictably; NASA Planetary Astronomy Program 2002-2005; Julie Rathbun, PI

Publications, Presentations and Panels

Planetology Seminar, University of California at Los Angeles, February 2009 

Guest lecture, San Bernardino County Museum, March 2007

Women in Science and Mathematics lecture, Buffalo State College, April 2006  

Rathbun, J.A., Spencer, J.R. Loki, Io: New groundbased observations and a model describing the change from periodic overturn. Geophys. Res. Lett. 33, L17201, doi:10.1029/2006GL026844, 2006.

Matson, D.L., Davies, A.G., Veeder, G.J., Rathbun, J.A., Johnson, T.V., Castillo, J.C. Io: Loki Patera as a Magma Sea. J. Geophys. Res. 111, E09002, doi:10.1029/2006JE002703, 2006.

Porco, C. C., Helfenstein, P., Thomas, P. C., Ingersoll, A. P., Wisdom, J., West, R., Neukum, G., Denk, T., Wagner, R., Roatsch, T., Kieffer, S., Turtle, E., McEwen, A., Johnson, T. V., Rathbun, J., Veverka, J., Wilson, D., Perry, J., Spitale, J., Brahic, A., Burns, J. A., DelGenio, A. D., Dones, L., Murray, C. D., Squyres, S. Cassini Observes the Active South Pole of Enceladus. Science, 311, 1393-1401, 2006.

Geology Department colloquium, State University of New York at Buffalo, November 2005  

Milazzo, M.P., Keszthelyi, L.P., Radebaugh, J., Davies, A.G., Turtle, E.P., Geissler, P., Klaasen, K.P., Rathbun, J.A., and McEwen, A.S. Volcanic Activity at Tvashtar Catena, Io. Icarus, 179, 235-251, 2005.

Williams, D.A., Keszthelyi, L.P., Schenk, P.M., Milazzo, M.P., Lopes, R.M.C., Rathbun, J.A., and Greeley, R. The Zamama-Thor region of Io: Insights from a synthesis of mapping, topography, and Galileo spacecraft data. Icarus, 177, 69-88, 2005.

Rathbun, J.A., Spencer, J.R., Martin, T.Z., Barnard, L., and Travis, L.D. Mapping of Io's Thermal Radiation by the Galileo Photopolarimeter- Radiometer (PPR) Instrument. Icarus, 169, 127-139, 2004.

Rathbun, J.A. and Squyres, S.W. Hydrothermal systems associtated with Martian impact craters. Icarus, 157, 362-372, 2002.

Rathbun, J.A., Spencer, J. R., Davies, A.G., Howell, R. R., and Wilson, L. Loki, Io: A periodic volcano. Geophys. Res. Lett., 29(10), 10.1029/2002GL014747, 2002.

Figueredo, P., Chuang, F.C., Rathbun, J.A., Kirk, R.L., and Greeley, R. Geology and Origin of Europa's "Mitten" Feature. J. Geophys. Res., 107(E5), 10.1029/2001JE001591, 2002.

Howell, R.R., Spencer, J.R., Goguen, J.D., Marchis, F., Prange, R., Fusco, T., Blaney, D.L., Veeder, G.J., Rathbun, J.A., Orton, G.S., Grocholski, A.J., Stansberry, J.A., Kanner, G.S., and Hege, E.K. Ground-based observations of Volcanism on Io in 1999 and early 2000. J. Geophys. Res., 106, 33,129-33,140, 2001.

Spencer, J.R., Rathbun, J.A., Travis, L.D., Tamppari, L.K., Barnard, L., Martin, T.Z., McEwen, A.S., Io's thermal emission from the Galileo Photopolarimeter-Radiometer. Science, 288, 1193-1198, 2000. The previous paper can be linked to from John Spencer's publications website.

Rathbun, J.A., Janes D.M., and Squyres, S.W. Formation of Beta Regio, Venus: Results from measuring strain. J. Geophys. Res., 104, 1917-1927, 1999.

Rathbun, J.A., Musser, G.S. and Squyres, S.W., Ice diapirs on Europa: Implications for liquid water. (pdf) Geophys. Res. Lett., 25, 4157-4160, 1998.

Professional Affiliations

  • American Geophysical Union
  • American Association for the Advancement of Science
  • Division of Planetary Science
  • Phi Beta Kappa

Design through Math
Appleton Hall

The back of the University of Redlands own Appleton Hall contains a mathematically designed ‘Echo Chamber’ that uses calculated angles to refract sound.

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