DONALD M. HASSLER
Born: Dec. 19, 1961
US
Citizenship
Education
Ph.D.
Physics, University of Colorado, Boulder, 1990.
M.S.
Physics, University of Colorado, Boulder, 1988.
B.A.
Physics, Kenyon College, Gambier, Ohio, 1984.
Employment
Senior
Research Scientist (3/97 - present)
Section
Manager (9/99 - present)
Instrumentation
and Space Research Division
Southwest
Research Institute, Boulder, CO
Adjunct
Professor, Dept. of Astrophysical and Planetary Sciences
University
of Colorado
Boulder,
CO (12/03 - present)
Scientist,
High Altitude Observatory
National
Center for Atmospheric Research
Boulder,
CO (12/93 - 3/97)
Physicist,
Harvard-Smithsonian Center for Astrophysics
Cambridge,
MA (1/92 - 12/93)
NSF-NATO
Postdoctoral Fellow, Institut d'Astrophysique Spatiale
Verrieres-le-Buisson
and Orsay, France (6/91 - 12/91, 1/94 - 7/94)
Research
Associate, Laboratory for Atmospheric and Space Physics
University
of Colorado, Boulder, CO (1/91 - 6/91)
Community Service
NASA Sun-Earth System Roadmap Committee member,
2004-2006
NASA Solar Probe Science and Technology
Definition Team member, 2003-2005
ESA Solar Orbiter Remote Sensing Working Group
member, 2002-2003.
NASA Sun-Earth Connection Roadmap Committee
member, 2001-2002.
NASA LWS Solar Dynamics Observatory Science Definition
Team member, 2000-2001.
Biographical Sketch
Dr. Hassler is a
Senior Research Scientist and Section Manager in the Department of Space
Studies at SwRI. He has an experimental
background in ultraviolet spectroscopy and the characterization of space
instruments. His current research interests include the development and
characterization of new space instrumentation, detector physics, ultraviolet
spectroscopy, the dynamics of the solar atmosphere and solar wind, and
characterization of the Mars radiation environment. He is currently Principle Investigator of a NASA sounding rocket
program to build a next generation UV spectrograph, called RAISE (Rapid
Acquisition Imaging Spectrograph), as well as Principle Investigator of two
IR&D projects to develop new instrumentation for future Mars missions (“The
Mars-Sun Connection and the Impact of Solar Variability on Mars Weather and
Climate: An Experiment Concept Study”). He has been either PI or Co-I on seven
previous sounding rocket flights and participated in the instrument
development, calibration and data analysis for the first successful flight of
the Spartan 201-1 satellite flown on the Space Shuttle (STS-56). He is a funded
Co-Investigator on the SOHO, STEREO and SDO missions. He is also a member of the NASA Solar Probe Science and
Technology Definition Team, the ESA Solar Orbiter Science Payload Working
Group, the NASA LWS/SDO Science Definition Team, the 2002 NASA Sun-Earth
Connection Roadmap Committee, and the 2006 Sun-Earth System Roadmap committee.
Publications
Hassler, D.M., D.H. Grinspoon, S. Rafkin, S. Perrier, J.-L. Bertaux, 2004. Diurnal, Seasonal, Solar Cycle and Episodic Effects of Space Weather at Mars, Icarus, in preparation.
Hassler,
D. M., 2003. The "Mars-Sun
Connection" and the Impact of Solar Variability on Mars Weather and
Climate, BAAS, 35, 1409.
Hassler,
D.M., 2003. Solar Probe: Mission to the Sun (Overview and Status Report), Proc. SPIE, 4853, 180.
Hassler,
D.M., C.E. DeForest, and D.C. Slater, 2003. EUV Solar Spectroscopic Explorer
(ESSEX): Mission Concept for a Next Generation Imaging Spectrograph, Proc. SPIE, 4853, 71.
Hassler,
D.M. and E. Buchlin, 2002. SUMER Observations of an Equatorial Coronal Hole, Ap. J. Lett., in preparation.
Hassler,
D.M., 2000. Spectroscopic Observations of Polar Plumes with SOHO/SUMER, Publications of the Astronomical Society of
the Pacific, 205, 83.
Hassler,
D. M., I.E. Dammasch, P. Lemaire, P. Brekke, W. Curdt, H. Mason, J.-C. Vial, K.
Wilhelm, 1999. Solar Wind Outflow and the Chromospheric Magnetic Network, Science, 283, 810.
Hassler,
D.M., D. Slater, R. Smartt, & S. Koutchmy, 1998. SOPHIE: A Solar EUV
Multi-layer Reflecting Coronagraph, Proc.
SPIE, 3443, 61.
Hassler,
D.M., P. Lemaire, Y. Longval, 1997.
Polarization Sensitivity of the SUMER Instrument on SOHO, Applied Optics, 36, 353.
Hassler,
D. M., K. Wilhelm, P. Lemaire, U. Schuehle, 1997. Observations of Polar Plumes
with the SUMER Instrument on SOHO, Solar
Phys., 175, 375.
Hassler,
D.M. and T.G. Moran, 1994. Broadening of Fe X (6374 Å) Profiles Above the Limb
in a Coronal Hole, Space Science Reviews,
70, 373.
Hassler,
D.M., L. Strachan, L. D. Gardner, J. L. Kohl, M. Guhathakurta, R.R. Fisher and
K. Strong, 1994. Ly-a and White light
Observations of a CME During the Spartan 201-1 Mission, Solar Dynamic Phenomena and Solar Wind Consequences, ESA SP-373, 363.
Hassler,
D.M., L.D. Gardner and J.L. Kohl, 1992. Measuring Electron Temperature in the
Extended Corona, Mass Supply and Flows in
the Solar Corona, ESA SP-348, 375.
Hassler,
D.M., G.J. Rottman and F.Q. Orrall, 1991. Systematic Radial Flows in the
Chromosphere, Transition Region and Corona of the Quiet Sun, Ap. J., 372, 710.
Hassler,
D.M., G.J. Rottman and G.M. Lawrence, 1991. Position Offsets in Curved Channel
Microchannel Plate Detectors, Applied
Optics, 30, 3575.
Hassler,
D.M., G.J. Rottman and F.Q. Orrall, 1991. Absolute Velocity Measurements in the
Solar Transition Region and Corona, Adv.
Space Res., 11, 141.
Hassler,
D.M., G.J. Rottman, E.C. Shoub and T.E. Holzer, 1990. Line Broadening of Mg x ll609 and 625 Coronal Emission Lines
Observed Above the Solar Limb, Ap. J.
Lett., 348, L77.
Auchere,
F., D.M. Hassler, D. Slater, T.N. Woods, 2001. Sounding Rocket
Inter-calibration of the EIT Instrument on SOHO, Solar Phys., 202, 269.
Auchere,
F., D.M. Hassler, D. Slater, T.N. Woods, 1999. SwRI/LASP Sounding Rocket
Inter-calibration with the EIT Instrument on SOHO, Proc. SPIE, 3765, 351.
Bookbinder,
J., E.E. DeLuca, P. Cheimets, L. Golub, D.M. Hassler, C. Korendyke, P. Glenn,
E. Silver, 2002. The Reconnection and Microscale (RAM) Solar-Terrestrial Probe,
Proc. SPIE, 4853, in press.
Brekke,
P., D.M. Hassler, U. Schuehle and K. Wilhelm, 1997. Doppler Shifts in the Solar
Transition Region and Corona of the Quiet Sun Observed with SUMER on SOHO, Solar Phys., 175, 349.
Brekke,
P., D.M. Hassler and K. Wilhelm, 1997. Systematic Redshifts in the Quiet Sun
Transition Region and Corona Observed with SUMER on SOHO, Proc. 5th SOHO Workshop, ESA
SP-404, 229.
Brekke,
P., D.M. Hassler, 1995. Needs for Improved Laboratory Wavelengths in the EUV, Laboratory and Astronomical High Resolution
Spectra, ASP Conf. Series, A.J. Sauval, R. Blomme, and N. Grevesse, eds., 81, 589.
Buchlin,
E. and D.M. Hassler, 2000. Recent SOHO/SUMER Observations of a Polar and
Equatorial Coronal Hole, BAAS, 32(2), 810.
Dammasch,
I.E., K. Wilhelm, W. Curdt, and D.M. Hassler, 1999. The Ne VIII 770 Å Resonance Line: Solar Wavelengths Determined by
SUMER on SOHO, A&A, 346, 285.
Dammasch,
I.E., D.M. Hassler, W. Curdt, and K. Wilhelm, 1999. Statistical Analysis of EUV
Lines Inside and Outside of Solar Coronal Holes, Space Sci. Rev., 87,
161.
Dammasch,
I.E., D.M. Hassler, K. Wilhelm and W. Curdt, 1999. Solar MgX and Fe XII
Wavelengths Measured by SUMER, Proc. of
the 8th SOHO Workshop, ESA SP-446,
263.
DeForest,
C.E., J.T. Hoeksema, J.B. Gurman, B. Thompson, R. Howard, S.P. Plunkett, R.
Harrison, D. Hassler, 1997. A
Comprehensive Observation of Polar Plumes, Solar
Phys., 175, 393.
Durda,
D. D., S. A. Stern, W. B. Colwell, J. Wm. Parker, H. F. Levison, and D. M.
Hassler 2000. A new observational search for Vulcanoids in SOHO/LASCO
Coronagraph images, Icarus, in press.
Elmore,
D.F., G.L. Card, C.W. Chambellan, D.M. Hassler, H.L. Hull, A.R. Lecinski, R.M.
MacQueen, K.V. Streander, J.L. Streete, and O.R. White, 1998. Chromospheric
Helium Imaging Photometer, Appl. Optics,
37, 4270.
Feldman,
U., I.E. Dammasch, K. Wilhelm, P. Lemaire, D. M. Hassler, 2003. SOHO SUMER
Atlas: Images of the Solar Upper Atmosphere from SUMER on SOHO, ESA
SP-1274.
Gardner,
L.D., D.M. Hassler, L. Strachan, J.L. Kohl, 1994. Spartan 201 Observations of
the Ultraviolet Extended Solar Corona, Solar
Coronal Structures, Proc. of IAU
Colloq. No. 144, eds. V. Rusin, P.
Heinzel, J.C. Vial, p. 631.
Golub,
L. and D.M. Hassler, 2000. High Resolution Coronal Imaging with Multilayers, Adv. Space Res., in press.
Handy,
B.N., D.M. Hassler, D. Slater, T.N. Woods, 2002. SwRI/LASP Sounding Rocket
Lyman-alpha Intercalibration with the Transition Region and Coronal Explorer, Solar Phys., in preparation.
Kohl,
J.L., L.D. Gardner, L. Strachan and D.M. Hassler, 1994. Ultraviolet
Spectroscopy of the Extended Solar Corona During the Spartan 201 Mission, Space Science Reviews, 70, 253.
Kopp,
G., M. Derks, D.F. Elmore, D.M. Hassler, J. Woods, J. Streete, J. Blankner,
1997. Tunable Liquid Crystal Filter for Solar Imaging at Helium I 1083 nm. Applied Optics, 36, 291.
Landi,
E., D. Mullan, G. Poletto, D.M. Hassler, K. Wilhelm, 1999. Plasma Flows and
Mass Flux in Coronal Hole Regions, Proc.
8th SOHO Workshop, ESA SP-446,
417.
Lemaire,
P., K. Bocchialini, K. Aletti, D.M. Hassler, K. Wilhelm, 1999. Search for
Signaturesof a Coronal Holein Transition Region Lines Near Disk Center, Space Sci. Rev., 87, 249.
Lemaire,
P., K. Wilhelm, W. Curdt, U. Schuhle, E. Marsch, A.I. Poland, S.D. Jordan, R.J.
Thomas, D.M. Hassler, M.C.E. Huber, J.-C. Vial, M. Kuhne, O.H.W. Siegmund, A.
Gabriel, J.G. Timothy, M. Grewing 1997. First Results of the SUMER Telescope
and Spectrometer - Solar Ultraviolet Measurements of Emitted Radiation - on
SOHO: (II) Imagery and Data Management, Solar
Phys., 170, 105.
Lemaire,
P., K. Wilhelm, W. Curdt, U. Schuehle, A.I. Poland, S.D. Jordan, R.J. Thomas,
D.M. Hassler, J.-C. Vial, 1997. High Resolution Solar Ultraviolet Measurements,
Adv. Space Res., 20, 2249.
Rottman,
G.J., D.M. Hassler, M.D. Jones and F.Q. Orrall, 1990. The Systematic Radial
Downflow in the Transition Region of the Quiet Sun from Limb-to-Limb
Observation of the C iv Resonance
Lines, Ap. J. , 358, 693.
Strachan,
L., L.D. Gardner, D.M. Hassler and J.L. Kohl, 1994. Preliminary Results from
Spartan 201: Coronal Streamer Observations, Space
Science Reviews, 70, 263.
Strachan,
L., L.D. Gardner, D.M. Hassler, J.L. Kohl, S. Fineschi and M. Romoli, 1993.
Radiometric Calibration of UVCS/SOHO and UVC/SPARTAN, Proceedings of the Ninth Workshop on the Vacuum Ultraviolet Calibration
of Space Experiments, Boulder, CO, March 10-11, 1993.
Warren,
H.P., and D.M. Hassler, 1999. The Density Structure of a Solar Polar Coronal
Hole, J. Geophys. Res., 104, 9781.
Wilhelm,
K., I.E. Dammasch, E. Marsch, and D.M. Hassler, 2000. On the Source Regions of
the Fast Solar Wind in Polar Coronal Holes, A&A,
353, 749.
Wilhelm,
K., P. Lemaire, I.E. Dammasch, J. Hollandt, U. Schuehle, W. Curdt, T. Kucera, D.
M. Hassler, M.C.E. Huber, 1999. Solar
Irradiances of UV and EUV Lines during the Minimum of Sunspot Activity in 1999,
Adv. Space Res., 24, 229.
Wilhelm,
K., E. Marsch, B. N. Dwivedi, D.M. Hassler, P. Lemaire, A. Gabriel, M.C.E.
Huber, 1998. The Corona Above Polar Coronal Holes as seen by SUMER on SOHO, Ap. J., 500, 1023.
Wilhelm,
K., P. Lemaire, I.E. Dammasch, J. Hollandt, U. Schuehle, W. Curdt, T. Kucera,
D. M. Hassler, M.C.E. Huber, 1998.
Solar Radiances and Irradiances of UV and EUV Lines during the Minimum
of Sunspot Activity in 1996, A & A,
334, 685.
Wilhelm,
K., P. Lemaire, W. Curdt, U. Schuhle, E. Marsch, A.I. Poland, S.D. Jordan, R.J.
Thomas, D.M. Hassler, M.C.E. Huber, J.-C. Vial, M. Kuhne, O.H.W. Siegmund, A.
Gabriel, J.G. Timothy, M. Grewing, U. Feldman, J. Hollandt and P. Brekke 1997.
First Results of the SUMER Telescope and Spectrometer - Solar Ultraviolet
Measurements of Emitted Radiation - on SOHO: (I) Spectra and Spectroradiometry,
Solar Phys., 170, 75.
Wilhelm,
K., W. Curdt, E. Marsch, U. Schuhle, A. Gabriel, P. Lemaire, J.-C. Vial, M.
Grewing, D. Hassler, M.C.E. Huber, S.D. Jordan, A.I. Poland, R.J. Thomas, M.
Kuhne, J.G. Timothy, and O.H.W. Siegmund 1995. SUMER - Solar Ultraviolet
Measurements of Emitted Radiation. Solar
Physics, 162, 189.
Recent Invited Talks/Presentations
“The Radiation Assessment Detector (RAD) for
the Mars MSL Mission”, 9th Workshop on Radiation Monitoring on
the International Space Station, Vienna, Sept. 2004.
“ Diurnal, Seasonal, Solar Cycle and Episodic Effects of Space Weather at the Martian Surface”, Spring AGU Meeting, Montreal, April 2004.
“
The "Mars-Sun Connection" and
the Impact of Solar Variability on Mars Weather and Climate”, DPS Meeting, Monterey,
CA, Sept. 2003.
"LWS
Program Needs: Solar/Heliospheric Physics", Invited talk. NASA Living with a Star Workshop, APL,
Maryland, 14 Nov. 2002.
"Solar
Probe Remote Sensing", Invited talk. NASA
Living with a Star Workshop, APL, Maryland, 13 Nov. 2002.
"EUV Solar Spectroscopic Explorer
(ESSEX): A Next Generation Imaging Spectrograph to Explore the Dynamic
Sun", Invited talk. SPIE Meeting, Waikoloa, Hawaii, 24 Aug. 2002.
"Solar Probe: Mission to the Sun
(Overview/Status Report)", Invited talk. SPIE Meeting, Waikoloa, Hawaii, 23 Aug.
2002.
"Coronal Magnetic Field Structure: Open
vs Closed Field Lines, Coronal Holes vs Streamers", Invited
talk. Magnetic Coupling of the Solar
Atmosphere: IAU Colloq. 188, Santorini, Greece, 14 June. 2002.
"SwRI Rocket Observations of
Ly-alpha", Invited talk. French LYOT
Mission Workshop, Orsay, France, 6 Jun 2002.
"Ly-alpha Spectroscopy and Space
Weather". French LYOT Mission
Workshop, Orsay, France, 6 Jun 2002.
"Future Capabilities: Space-Based Solar
Physics", Invited talk. Cool Stars
12 Meeting, Boulder, Colorado, 3 Aug. 2001.
"Solar Probe: Mission to the Sun",
Invited talk. AAS/SPD Meeting,
Boston, MA, 30 May 2001.
"Review of Solar Orbiter Strawman
Remote Sensing Instrument Package and Capabilities", Invited talk.. 1st ESA Solar Orbiter Workshop,
Tenerife, Spain, 15 May 2001.
"Solar Probe: Mission to the Sun",
Invited talk. COSPAR
International Congress, Warsaw, Poland, 16 July 2000.
"High Resolution Coronal Imaging with
Multilayers", Invited talk. COSPAR International Space Congress, Warsaw, Poland, 16 July 2000.
"Comparison
of Outflow Properties of Equatorial and Polar Coronal Holes", Invited
Talk. EGS Meeting, Nice, France, 18
May 2000.
"The
4th Dimension: The Need for High Resolution Imaging Spectroscopy". NASA Living with a Star Workshop,
Greenbelt, Maryland, 9 May 2000.
"Spectroscopic
Observations of Polar Plumes with SOHO/SUMER", Invited talk. The Last Total Solar Eclipse of the
Millennium Symposium, Instanbul, Turkey, 13-15 Aug. 1999.
"The
Source Region of the High Speed Solar Wind", Invited talk, Physics of the Solar Corona and Transition
Region Workshop, Monterey, Calif., 26 Aug. 1999.
Public Outreach/Television Interviews/Press
Releases
"The
Source Region of the Solar Wind", Interview. CBS Evening News with Dan Rather, 4 Feb. 1999.
"SOHO
Spacecraft Detects Source of High Speed "Wind" from the Sun",
Press Release. NASA Press Release, 4
Feb. 1999.
"The
SOHO Mission", Interview. The Real
Moment of Science Talk Show, PBS, 20 April 1998.
"Solar
Eclipses", Interview. The Real
Moment of Science Talk Show, PBS, 13 April 1998.
"The
February 26 Total Solar Eclipse", Interview. The Discovery Channel, 27 Feb. 1998.