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Balloon Campaigns


    Sweden 2006

    MINIS 2005

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Robyn Millan

Associate Professor, Dept. of Physics and Astronomy


  • University of California, Berkeley: PhD Physics 2002
  • University of California, Berkeley: B.A. Physics, Astronomy 19995


  • 2005-present: Asst. Professor, Dartmouth College
  • 2002-2005: Research Asst. Professor, Dartmouth College
  • Summer 2002: Postdoctoral Research Assistant, Space Sciences Lab, U. C. Berkeley
  • 1997-2002: Graduate Student Researcher, Space Sciences Lab, U. C. Berkeley
  • 1996-1997: Graduate Student Instructor, Physics Dept., U. C. Berkeley
  • 1995-1996: Engineering Assistant, Undergraduate Radio Astronomy Lab, U. C. Berkeley
  • 1994-1996: Undergraduate Research Assistant, Astronomy Dept., U. C. Berkeley
  • Summer 1994: Research Assistant, Lawrence Berkeley Laboratory

Contact Information

  • Office: 240 Wilder
  • Phone: (603) 646-3969
  • Email:


Manuscripts In Review

Breneman, A. W., +A. Halford, R. Millan, M. McCarthy, L. Woodger, G. B. Hospodarsky, J.R. Wygant, C.A. Kletzing, D. Malaspina, J. Sample, J. Fennell, C. A. Cattell, J. Goldstein, "Obser- vations of a Global Coherence Scale Modulating Electron Loss Due to Plasmaspheric Hiss", submitted to Nature.
+Woodger, L. A., +A. J. Halford, R. M. Millan, M.P. McCarthy, D. M. Smith, G. Bowers, J.G. Sam- ple, and B. Anderson, "A Summary of the BARREL Campaigns: Technique for studying electron precipitation", submitted to J. of Geophys. Res. Space Physics.

In press

Brito,T., M. K. Hudson, B. Kress, J. Paral, +A. Halford, R. Millan, and M. Usanova, "Simulation of ULF Wave Modulated Radiation Belt Electron Precipitation During the 17 March 2013 Storm", submitted to J. Geophys. Res. Space Physics.


A. Y. Ukhorskiy, M. I. Sitnov, R. M. Millan, B. T. Kress, J. F. Fennell, S. G. Claudepierre and R. J. Barnes, "Global Storm-Time Depletion of the Outer Electron Belt", J. Geophys. Res. Space Physics, doi: 10.1002/2014JA020645, 2015.
+A. J. Halford, S. L. McGregor, K. R. Murphy, R. M. Millan, M. K. Hudson, L. A. Woodger, C. A. Cattel, A. W. Breneman, I. R. Mann, W. S. Kurth, G. B. Hospodarsky, M. Gkioulidou and J. F. Fennell, "BARREL observations of an ICME-Shock impact with the magnetosphere and the resultant radiation belt electron loss.", J. Geophys. Res. Space Physics, doi: 10.1002/2014JA020873, 2015.
*Li, Z., R. M. Millan, M. K. Hudson, L. A. Woodger, D. M. Smith, Y. Chen, R. Friedel, J. V. Ro- driguez, M. J. Engebretson, J. Goldstein, J. F. Fennell, and H. E. Spence, "Investigation of EMIC wave scattering as the cause for the BARREL 17 January 2013 relativistic electron precipitation event: A quantitative comparison of simulation with observations", Geophys. Res. Lett., 41, 87228729, doi:10.1002/2014GL062273, 2014.
Ukhorskiy, A. Y., M. I. Sitnov, R. M. Millan, B. T. Kress, and D. C. Smith, "Enhanced radial transport and energization of radiation belt electrons due to drift orbit bifurcations", J. Geophys. Res. Space Physics, 119, 163170, doi:10.1002/2013JA019315, 2014.
Blum, L. W., Q. Schiller, X. Li, R. Millan, +A. Halford, and +L. Woodger, "New conjunctive CubeSat and balloon measurements to quantify rapid energetic electron precipitation", Geophys. Res. Lett., 40, 58335837, doi:10.1002/2013GL058546, 2013.
*Li, Z, R. M. Millan, and M. K Hudson, "Study of the energy distribution of radiation belt electron precipitation caused by quasi-linear interactions with EMIC waves", J. Geophys. Res. Space Physics, 118, 75767583, doi:10.1002/2013JA019163, 2013.
Comess, Max D., David M. Smith, Richard Selesnick, Robyn Millan, "Duskside relativistic electron precipitation measured by SAMPEX: A statistical study", J. Geophys. Res. Space Physics, 118, 50505058, doi:10.1002/jgra.50481, 2013.
Millan, R. M., et al., The Balloon Array for RBSP Relativistic Electron Losses (BARREL), Space Science Reviews, doi:10.1007/s11214-013-9971-z, 2013.
Brito, T., *L. Woodger, M. Hudson, and R. Millan, "Energetic radiation belt electron precipitation showing ULF modulation", Geophys, Res. Lett., 39, L22104, doi:10.1029/2012GL053790, 2012.
Millan, R. M. and D. N. Baker, "Acceleration of Particles to High Energies in Earth's Radiation Belts", in the ISSI Workshop Book "Particle Acceleration in Cosmic Plasmas" and Space Science Reviews, doi:10.1007/s11214-012-9941-x, 2012.
Ukhorskiy, A. Y., M. I. Sitnov, R. M. Millan, B. T. Kress, "Implications of Drift Orbit Bifurcations to Variability of the Outer Electron Belts", J. Geophys. Res.,116, A09208, doi:10.1029/2011JA016623, 2011.
Yando, K. B., R. M. Millan, J. C. Green, and D. S. Evans, "A Monte Carlo Simulation of the POES Medium Energy Proton and Electron Detector", J. Geophys. Res., 2011, in press.
*Lundberg, J. L., R. M. Millan, and K. Eack, "Limits of Thunderstorm Induced Radioactive Chlorine from Gamma-Ray Observations", J. Geophys. Res., 116, D21305, doi:10.1029/2010JD015300, 2011.
Millan, R. M., and the BARREL Team, "Understanding relativistic electron losses with BARREL", Journal of Atmospheric and Solar- Terrestrial Physics, doi:10.1016/j.jastp.2011.01.006, 2011.
Millan, R. M., K. B. Yando, J. C. Green, and A. Y. Ukhorskiy, "Spatial distribution of relativistic electron precipitation during a radiation belt depletion event, Geophys. Res. Lett., 37, L20103, doi:10.1029/2010GL044919, 2010.
Clilverd, Mark A., Craig J. Rodger, Robyn M. Millan, John G. Sample, Michael Kokorowski, Michael P. McCarthy, Thomas Ulich, Tero Raita, Andrew J. Kavanagh, Emma Spanswick, "Energetic particle precipitation into the middle atmosphere triggered by a coronal mass ejection", J. Geophys. Res., 112, A12206, doi:10.1029/2007JA012395, 2007.
Millan, R. M, and R. M. Thorne, "Review of Radiation Belt Relativistic Electron Losses", J. Atmos. Solar Terr. Physics, 69, 362-377, 2007.
Millan, R. M., R. P. Lin, M. P. McCarthy, "Observation of relativistic electron precipitation during a rapid decrease of trapped relativistic electron flux", Geophys. Res. Lett.,34, L10101, doi:10.1029/2006GL028653, 2007.
Kokorowski, M., J. G. Sample, R. H. Holzworth, E. A. Bering, S. D. Bale, J. B. Blake, A. B. Collier, A. R. W. Hughes, E. Lay, R. P. Lin, M. P. McCarthy, R. M. Millan, H. Moraal, T. P. O'Brien, G. K. Parks, M. Palupa, B. D. Reddell, D. M. Smith, P. H. Stoker, and *L. Woodger, "Rapid fluctutions of stratospheric electric field following a solar energetic particle event", Geophys. Res. Lett, 33, L20105, doi:10.1029/2006GL027718, 2006.
Boggs, S. E., R. M. Millan, K. B. Eack, G. D. Aulich, "Investigation of Nuclear Gamma-ray Line Emission Associated with Lightning", American Geophysical Union, Fall Meeting 2005, AE33A-0950, December 2005.,
McCarthy, M. P.; Smith, D. M.; Sample, J. G.; Bale, S.; Bering, E. A.; Blake, J. B.; Collier, A. B.; Holzworth, R. H.; Hughes, A. R.; Kokorowski, M.; Lay, E. H.; Lin, R. P.; Millan, R. M.; Moraal, H.; O'Brien, T. P.; Parks, G. K.; Pulupa, M.; Reddell, B. D.; Share, G. H.; Shih, A. Y.; Stoker, P.; *Woodger, L. A., "MINIS Balloon and RHESSI Observations of a Solar Energetic Particle Event", American Geophysical Union, Fall Meeting 2005, SH23A-0333, December 2005.
Sample, J. G., M. P. McCarthy, R. Millan, et al., "MINIS Observations of MeV electron precipitation on January 21st 2005", American Geophysical Union, Fall Meeting 2005, SH22A-03, December 2005.
*Woodger, L. A., "Investigating EMIC waves as a relativistic electron precipitation mechanism dur- ing the MINIS balloon campaign", American Geophysical Union, Fall Meeting 2005, SH23A-0330, December 2005.
Millan, R. M., D. M. Smith, G. K. Parks, J. G. Sample, M. P. McCarthy, R. Holzworth, E. A. Bering, L. Woodger, M. Kokorowski, E. Lay, S. Bale, T. P. O'Brien, J. B. Blake, R. P. Lin, H. Moraal, P. Stoker, A. R. Hughes, A. B. Collier, "A Multiple Balloon Campaign to Study Relativistic Electron Loss Mechanims", American Geophysical Union, Fall Meeting 2004, SM41A-1105, December 2004.
Millan, R. M., "Investigating the Relationship Between Different Classes of Relativistic Electron Precipitation", 2004 Geospace Environment Modeling (GEM) Summer Workshop, June 2004.
de Pater, I., B. J. Butler, D. A. Green, R. Strom, R. Millan, M. J. Klein, M. K. Bird, O. Funke, J. Neidhofer, R. Maddalena, R. J. Sault, M. Kesteven, D. P. Smits, R. Hunstead, "Jupiter's radio spectrum from 74 MHz up to 8 GHz", Icarus, 163, 434-448, 2003.
Sample, J. G., Smith, D. M., Parks, G., Holzworth, R., Bering, E. A., McCarthy, M., Millan, R., Kokorowski, M., Reddell, B., Huss, L., Lay, E., Bale, S., Delory, G., O'Brien, P., Blake, J., Lin, R. P., Hughes, A. R., Stoker, P., Moraal, H., "Multiple Balloon Campaign (MINIS) to Study MeV Electron Precipitation", American Geophysical Union, Fall Meeting 2003, SM41C-0582, December 2003.
Millan, R. M., R. P. Lin, D. M. Smith, K. R. Lorentzen, M. P. McCarthy, X-ray observations of MeV electron precipitation with a balloon-borne germanium spectrometer, Geophys. Res. Lett , 29, 47-1, 2002.
Roth, I., R. M. Millan, R. P. Lin, "Resonant enhancement of relativistic electrons in the radiation belts and their observational losses", Journal of Astmospheric and Solar-Terrestrial Phys., 64, 617-24, 2002.
Lorentzen, K. R., M. P. McCarthy, G. K. Parks, J. E. Foat, R. M. Millan, D. M. Smith, R. P. Lin and J. P. Treilhou, "Precipitation of relativistic electrons by interaction with electromagnetic ion cyclotron waves", Jour. Geophys. Res., 105, 5381, 2000.
Van der Taak, F., I. de Pater, A. Silva, R. Millan, "Time Variability in the radio brightness distribution of Saturn", Icarus, 142, 125-47, 1999.
Foat, J. E., R. P. Lin, D. M. Smith, F. Fenrich, R. Millan, I. Roth, K. R. Lorentzen, M. P. McCarthy, G. K. Parks, J. P. Treilhou, "First Detection of a Terrestrial MeV X-ray Burst", Geophys. Res. Lett., 25, 4109-4112, 1998.
Millan, R., D. Smits, I. de Pater, "Observations of Jupiter at 3.5 cm and 6.0 cm associated with the impact of Comet P/Shoemaker-Levy 9", Icarus, 133, 184-191, 1998.
Parthasarathy, R., C. Frank, R. Treffers, D. Cudaback, C. Hancox, C. Heiles, R. Millan, "A Rooftop Radio Observatory: An Undergraduate Radio Telescope System at the University of California at Berkeley", Amer. Journ. of Phys., 66, 768-71, 1998.
Wong, M.H., I. de Pater, C. Heiles, R. Millan, R.J. Maddalena, M. Kesteven,R.M. Price, and M. Calabretta, "Observations of Jupiter's 20-cm Synchrotron Emission during the Impacts of Comet P/Shoemaker-Levy 9", Icarus 121, 457-468, 1996.

*Student of R. Millan at time of publication

+Postdoc of R. Millan at time of publication

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