MC 171-B13 NASA / JPL Pasadena, CA 91108 |
1020 N. Mentor Avenue Pasadena CA, 91104 |
Space Radiation Lab, MC 22-47 California Institute of Technology Pasadena, CA 91205 |
2000 | Ph.D. Astronomy | University of Maryland | 1996 | M.S. Astronomy | University of Maryland | 1993 | Physik Diplom | Universität Hamburg, Germany | 1990 | Vordiplom Physik | Universität Hamburg, Germany | 1987 | Abitur | Modellschule Obersberg, Bad Hersfeld, Germany |
09/2005 - present | Member technical staff, Jet Propulsion Laboratory |
Enigneering on airborne Laser Absorption Spectrometer: hardware, programming, flight ops and data analysis. | |
11/2003 - 08/2005 | Senior Postdoctoral Scholar, California Inst. of Technology |
Development, construction and testing of high energy space instrumentation and materials; esp Cherenkov detectors. | |
11/2000 - 10/2003 | Postdoctoral Scholar, California Inst. of Technology |
Solar, heliospheric and galactic cosmic ray research. Team member of record setting TIGER Antarctic launch campaigns of 2001 and 2003. | |
05/2000 - 10/2000 | Research Associate, UMD/GSFC. |
High energy cosmic ray research. | |
06/1995 - 05/2000 | Research assistant, NASA/GSFC, Greenbelt, MD 20771. |
Development of space-borne particle detection hardware. Testing, calibration, modelling. Flight operations in Lynn Lake, CA June--August 1998, data-processing, analysis, modelling. Computer system administration. | |
09/1993 - 05/1995 | Teaching assistant, University of Maryland, College Park, MD 20742. |
Lab and discussion sections for Astr 100 and Astr 101. | |
Summer term 1993 | "Tutor, mathematischer Vorkurs" Universität Hamburg, Hamburg, Germany. |
Teaching assistant for the introductory math lecture. Discussion/Work sections. | |
07/1990 - 12/1992 | Studentische Hilfskraft for the Hamburger Sternwarte, 21029 Hamburg, Germany. |
Reseach assistant at the observatory in Hamburg. Software development,
modelling of radio emission line spectra. Work on low mass, X-ray
bright PMS stars, ROSAT PSPC data (thesis project) and the absorption
of X-rays in the interstellar medium. Some optical work, mostly in
astrometric context.
During this period: | |
07/1990 - 08/1990 | Work at the Gornergrat, Zermatt, Switzerland. |
Measurement of molecular lines in the mm band. | |
06/1991 - 10/1991 | Institute for Geodesy, Astrometry and Remote Sensing, Konkoly Observatory of the Hungarian Academy of Science, H-1525 Budapest, Hungary. |
Tracking, modelling, determination of satellite orbits in connection with the Russian RADIOASTRON space VLBI project | |
Winter term 1989/90 | "Tutor, Physik für Chemiker" Universität Hamburg, Hamburg, Germany. |
Teaching assistant for "Physics for Students of Chemistry." Discussion sections and Exam prep. | |
07/1987 - 01/1989 | Ambulance driver / EMT for the German Red Cross in Bad Hersfeld, Germany. |
Broad background in space science related technology, materials science and operational logistics; including x-ray detectors, semiconductors, vacuum and cryo systems, scientific ballooning, data processing, electronics, particle detectors, plasma physics, plastics and glues, radio astronomy, systems theory, vacuum systems, computer systems, beam optics and more.
Experience with more computer systems, architectures, languages and operating systems than I could usefully enumerate here, including 15 years of continuous work in UNIX and UNIX-like environments, system administration duties at NASA, programming of spacecraft and computerized experiment control.
American Physical Society
A Search for the Signature of Microquasars in the Cosmic-Ray Iron Spectrum measured by TIGER ; S. Geier, L. M. Barbier, W. R. Binns, E.R. Christian, J.R. Cummings, G.A. deNolfo, P.L. Hink, M.H. Israel, A. W. Labrador, J.T. Link, R.A. Mewaldt, J.W. Mitchell, B.F. Rauc, S.M. Schindler, L.M. Scott, E.C. Stone, R.E. Streitmatter , C.J. Waddington ; Adv. Sp. Res, 37, 1955 (2006)
Measurement of the Abundance of Radioactive 10Be and Other Light Isotopes in Cosmic Radiation up to 2GeV Nucleon-1 with the Balloon-borne Instrument ISOMAX; T. Hams, L. M. Barbier, M. Bremerich, E. R. Christian, G. A. de Nolfo, S. Geier, H. Goebel, S. K. Gupta, M. Hof, W. Menn, R. A. Mewaldt, J. W. Mitchell, S. M. Schindler, M. Simon, and R. E. Streitmatter; Astrophys. J. 611, 892 (2004)
A Study of Cosmic Ray Beryllium with the Isotope Magnet Experiment (ISOMAX) dissertation (2000)
Performance of CAMAC TDC and ADC in Magnetic Fields, S. K. Gupta, L. M. Barbier, E. R. Christian, S. Geier, J. F. Krizmanic, J. W. Mitchell, R. E. Streitmatter, P. J. Wasilewsski, Nucl. Instr. and Meth. 400, 428 (1997)
ROSAT PSPC Observations of the Orion Trapezium Area. I. Pre-Main Sequence and O Stars., S. Geier, H.J. Wendker and L. Wisotzki, Astronomy and Astrophysics, 299, 39 (1995)
Das Röntgenbild des Orion-Komplexes oder Die Problematik der Auswertung von ROSAT Daten, thesis (1993)
S.Geier, L.M. Barbier, W.R. Binns, E.R. Christian, J.R. Cummings, G.A. de Nolfo, M.H. Israel, J.T. Link, R.A. Mewaldt, J.W. Mitchell, S.M. Schindler, L.M. Scott, E.C. Stone, R.E. Streitmatter, C.J. Waddington; Possible Detection of Large Solar Particle Event at Balloon Altitudes during the 2001-2002 TIGER Flight; Proc. 28th ICRC (Tsukuba) SH 1.2 (803) (2003)
S. Geier, R.A. Mewaldt, F.B. Eyre, M.B. Wiedenbeck, A.J. Buck, C.D. Wilburn; Progress in the development of large-area, ultra-thin silicon detectors for space-based applications; Proc. 27th ICRC (Hamburg) OG 1.06 137 (2001)
S. Geier, L.M. Barbier, E.R. Christian, S.K. Gupta, J.F. Krizmanic, J.W. Mitchell, J.F. Ormes, R.E. Streitmatter, A.J. Davis, G.A. DeNolfo, R.A. Mewaldt, S.M. Schindler, H. Goebel, M. Bremerich, T. Hams, M. Hof, W. Menn, and M. Simon The ISOMAX Time-of-Flight System, Proc. cent. APS VB10.03, (1999)
S. Geier L.M. Barbier, M. Bremerich, E.R. Christian, A.J. Davis, G.A. DeNolfo, H. Goebel, S.K. Gupta, T. Hams, M. Hof, J.F. Krizmanic, W. Menn, R.A. Mewaldt, J.W. Mitchell, J.F. Ormes, S.M. Schindler, M. Simon, and R.E. Streitmatter In-flight Performance of the ISOMAX TOF Proc. 26th ICRC (Utah) OG 1 1.32 (1999)
S. Geier, L.M. Barbier, E.R. Christian, S.K. Gupta, J.F. Krizmanic, J.W. Mitchell, J.F. Ormes, R.E. Streitmatter, A.J. Davis, G.A. DeNolfo, R.A. Mewaldt, S.M. Schindler, H. Goebel, M. Bremerich, T. Hams, M. Hof, W. Menn, and M. Simon Light Isotope Measurements from the ISOMAX 98 Experiment, Proc. Apr00 APS W16.008, (2000)
S. Geier and H.J. Wendker, Orion Trapezium, a view into the astrophysics of young stars with the ROSAT PSPC, AIP conference proceedings 313, 275 (1994)
G.A. de Nolfo, A.J. Davis, R.A. Mewaldt, S.M. Schindler, L.M. Barbier, E.R. Christian, S. Geier, S. Gupta, J.F. Krizmanic, J.W.Mitchell, J.F. Ormes, R.E. Streitmatter, M. Bremerich, H. Goebel, T. Hams, M. Hof, W. Menn, and M. Simon, Performance of the ISOMAX Cherenkov Detectors, Proc. cent. APS PP01.159, (1999)
J.W. Mitchell, L.M. Barbier, E.R. Christian, S. Geier, S.K. Gupta, J.F. Krizmanic, J.F. Ormes, R.E. Streitmatter, H. Goebel, M. Bremerich, T. Hams, M. Hof, W. Menn, M. Simon, A.J. Davis, G.A. DeNolfo, R.A. Mewaldt, and S.M. Schindler The Isotope Magnet Experiment (ISOMAX), Proc. cent. APS VB10.01, (1999)
T. Hams, H. Goebel, M. Bremerich, M. Hof, W. Menn, M. Simon, L.M. Barbier, E.R. Christian, S. Geier, S.K. Gupta, J.F. Krizmanic, J.W. Mitchell, J.F. Ormes, R.E. Streitmatter, A.J. Davis, G.A. DeNolfo, R.A. Mewaldt, and S.M. Schindler The ISOMAX Magnet Spectrometer, Proc. cent. APS VB10.02, (1999)
G.A. de Nolfo, L.M. Barbier, M. Bremerich, E.R. Christian, A.J. Davis, S. Geier, H. Goebel, S.K. Gupta, T. Hams, M. Hof, J.F. Krizmanic, W. Menn, R.A. Mewaldt, J.W. Mitchell, J.F. Ormes, S.M. Schindler, M. Simon, and R.E. Streitmatter Cosmic Ray Isotope Measurements using the Cherenkov-rigidity Technique in ISOMAX Proc. 26th ICRC (Utah) OG 1 1.09 (1999)
J.W. Mitchell, L.M. Barbier, M. Bremerich, E.R. Christian, A.J. Davis, G.A. DeNolfo, S. Geier, H. Goebel, S.K. Gupta, T. Hams, M. Hof, J.F. Krizmanic, W. Menn, R.A. Mewaldt, J.F. Ormes, S.M. Schindler, M. Simon, and R.E. Streitmatter ISOMAX: Flight Performance of The Isotope Magnet Experiment Proc. 26th ICRC (Utah) OG 1 1.31 (1999)
T. Hams, L.M. Barbier, M. Bremerich, E.R. Christian, A.J. Davis, G.A. DeNolfo, S. Geier, H. Goebel, S.K. Gupta, M. Hof, J.F. Krizmanic, W. Menn, R.A. Mewaldt, J.W. Mitchell, J.F. Ormes, S.M. Schindler, M. Simon, and R.E. Streitmatter The ISOMAX Magnet Spectrometer Proc. 26th ICRC (Utah) OG 1 1.33 (1999)
G.A. de Nolfo, A.J. Davis, R.A. Mewaldt, S.M. Schindler, L.M. Barbier, E.R. Christian, S. Geier, S. Gupta, J.F. Krizmanic, J.W.Mitchell, J.F. Ormes, R.E. Streitmatter, M. Bremerich, H. Goebel, T. Hams, M. Hof, W. Menn, and M. Simon, ISOMAX 1998 Flight Performance Proc. Apr00 APS C23.003, (2000)