Position:
University professor (permanent position)
Education:
| 1981-1983 | Study of physics, Gießen University | |
| 1983-1987 | Study of physics and astronomy, Heidelberg University | |
| 1987 | Diploma in physics, Heidelberg University | |
| 1990 | Dissertation in physics (Dr. rer. nat.), Heidelberg University | |
| 1999 | Habilitation, Faculty for Physics and Astronomy, Jena University |
Employment:
| since 2003 | Institute for Geophysics und extraterrestrial Physics, TU Braunschweig |
| 2000-2003 | Astrophysical Institute, Jena University |
| 1999-2000 | Department of Astronomy, University of Florida and Naval Research Laboratory, Washington, D.C. |
| 1997-1999 | Astrophysical Institute, Jena University |
| 1992-1996 | Max Planck Research Group “Dust in Star-Forming Regions'' Jena |
| 1987-1992 | Max Planck Institute for Nuclear Physics and TU München |
Research Interests:
Laboratory astrophysics: Simulation of cosmic processes in the laboratory; dust agglomeration; fabrication and characterization of protoplanetary and cometary analog materials; nano and micro particles; ice experiments; collisional processes.
Cosmic dust: morphological, optical, electrostatic, aerodynamic, mechanical and collisional properties of cosmic dust; characterization of cosmic dust by in-situ measurements; dust collection in the upper atmosphere (stratosphere and mesosphere); collection of cosmic dust in space experiments.
Formation of planetary systems: Initial phase of dust growth in young planetary systems, properties of protoplanetary dust aggregates; collisional evolution of dust in young planetary systems; properties of macroscopic bodies in young planetary systems; physical properties of planetesimals and cometesimals.
Minor bodies in the solar system: Experimental simulation of regolith formation; thermal, optical and mechanical properties of regolith; density and porosity of primitive bodies in the solar system, collisions among ring particles and structure formation in Saturn’s rings; cometary physics.
Low-gravity experiments: Experiments on dust aggregation, regolith formation, Brownian motion and rotation, granular media, photophoresis and thermophoresis; particle traps under microgravity conditions; utilization of drop tower, parabolic flights, sounding rockets, and space shuttle; construction of an
(Co-) Investigator: ???
Awards and Honors:
| 2000 | Habilitation Award, Jena University |
Selected Publications:
- J. Blum, B. Gundlach, S. Mühle, J.M. Trigo-Rodriguez, 2014. Comets formed in solar-nebula instabilities! – An experimental and modeling attempt to relate the activity of comets to their formation process, Icarus 235, 156-169.
- J. Blum, G. Wurm, 2008. The Growth Mechanisms of Macroscopic Bodies in Protoplanetary Disks, Annual Review of Astronomy and Astrophysics 46, 21-56.
- J. Blum, G. Wurm, S. Kempf, T. Poppe, H. Klahr, T. Kozasa, M. Rott, T. Henning, J. Dorschner, R. Schräpler, H.U. Keller, W.J. Markiewicz, I. Mann, B.A.S. Gustafson, F. Giovane, D. Neuhaus, H. Fechtig, E. Grün, B. Feuerbacher, H. Kochan, L. Ratke, A. El Goresy, G. Morfill, S.J. Weidenschilling, G. Schwehm, K. Metzler, W.-H. Ip, 2000. Growth and Form of Planetary Seedlings: Results from a Microgravity Aggregation Experiment, Phys. Rev. Lett. 85, 2426-2429.
- M. Fulle, J. Blum, 2017. Fractal dust constrains the collisional history of comets, Monthly Notices of the Royal Astronomical Society 469, S39-S44.
- B. Gundlach, J. Blum, 2015. The stickiness of micrometer-sized water-ice particles, Astrophysical Journal 798:34.
- B. Gundlach, S. Kilias, E. Beitz, J. Blum, 2011. Micrometer-sized ice particles for planetary-science experiments - I. Preparation, critical rolling friction force, and specific surface energy, Icarus 214, 717-723.
- C. Güttler, J. Blum, A. Zsom, C.W. Ormel, C.P. Dullemond, 2010. The outcome of protoplanetary dust growth: pebbles, boulders, or planetesimals? I. Mapping the zoo of laboratory collision experiments, Astronomy & Astrophysics 513, A56.
- A. Johansen, J. Blum, H. Tanaka, C. Ormel, M. Bizzarro, H. Rickman, 2014. The Multifaceted Planetesimal Formation Process, Protostars & Planets VI, 547-570.
- L. Testi, T. Birnstiel, L. Ricci, S. Andrews, J. Blum, J. Carpenter, C. Dominik, A. Isella, A. Natta, J.P. Williams, D.J. Wilner, 2014. Dust Evolution in Protoplanetary Disks, Protostars & Planets VI, 339-362.
- A. Zsom, C.W. Ormel, C. Güttler, J. Blum, C. P. Dullemond, 2010. The outcome of protoplanetary dust growth: pebbles, boulders, or planetesimals? II. Introducing the bouncing barrier, Astronomy & Astrophysics 513, A57.
