Hans Mueller

|Research Professor
Academic Appointments

Research Professor

Hans-Reinhard Müller is a Space Physicist specializing in numerical modeling of the heliosphere, the region around the Sun where the solar wind interacts with the surrounding interstellar gas. In this region, ionized matter in the plasma state interacts with neutral gases in a complicated way. This research relates to space missions such as VOYAGER, IBEX, IMAP, and the Hubble Space Telescope. Dr. Müller applies this type of plasma-neutral physics also to astrospheres (heliospheres around other stars), and to exoplanets that lose neutral gas through atmosphere evaporation. After working as a researcher at the Univ. of Delaware, UC Riverside, and Univ. of Alabama Huntsville, Dr. Müller joined Dartmouth beginning of 2003.


Shattuck, Room 105
HB 6127


Physics and Astronomy, Physics and Astronomy


  • B.S. University of Munich
  • M.S. University of Munich (LMU)
  • Ph.D. Dartmouth College

Selected Publications

  • B.E. Wood, H.-R. Müller, S. Redfield, et al., New Observational Constraints on the Winds of M dwarf Stars, The Astrophysical Journal 915, 37 (2021) doi: 10.3847/1538-4357/abfda

  • B.E. Wood, H.-R.Müller, and E. Möbius, Evidence for Asymmetry in the Velocity Distribution of the Interstellar Neutral Helium Flow Observed by IBEX and Ulysses, The Astrophysical Journal 881, 55 (2019) doi: 10.3847/1538-4357/ab2e74

  • B.E. Wood, H.-R.Müller, and M. Witte, Revisiting Ulysses Observations of Interstellar Helium, The Astrophysical Journal 881, 55 (2015) doi: 10.1088/0004-637X/801/1/62

  • H.-R. Müller, P.C. Frisch, V. Florinski and G.P. Zank, Heliospheric response to different possible interstellar environments, The Astrophysical Journal 647, 1491 (2006)

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Works In Progress

  • Heavy neutral atoms of interstellar origin in the inner solar system

  • Heliosphere-analogues (astrospheres) around stars elsewhere in the Galaxy

  • Interaction of stellar winds with the interstellar medium

  • Evaporating atmospheres of exoplanets