National Aeronautics and Space Administration

Living With A Star

Targeted Research and Technology

Eclipse observations of heavy ions, neutrals and dust grains in the solar corona

ROSES ID: NNH07ZDA001N      Selection Year: 2008      

Program Element: Independent Investigation

Principal Investigator: Shadia Habbal

Affiliation(s): University of Hawaii at Manoa

Project Member(s):
Kuhn, Jeff R Co-I Institute for Astronomy
Mickey, Donald L Co-I null
Morgan, Huw Co-I Institute for Astronomy
Daw, Adrian Co-I/Institutional PI NASA/Goddard Space Flight Center
Arndt, Martina B. Co-I/Institutional PI Bridgewater State College
Scholl, Isabelle F. Collaborator University of Hawaii
Johnson, Judd Consultant Electricon Corp.
Nayfeh, Munir H Co-I/Institutional PI University of Illinois at Urbana-Champaign

Summary:

Coronal observations, spanning a field of view of approximately 4 degrees, are proposed for the total solar eclipses of 1 August 2008, 22 July 2009, and 11 July 2010. These eclipses coincide with three almost equally spaced periods of time in the rising phase of the new solar activity cycle. The goals are: (1) to map the ion abundance, electron temperature, and direction of the coronal magnetic field, (2) to explore the presence and distribution of neutral hydrogen and helium in the corona, and (3) to investigate the properties of dust grains in the near Sun environment, with complementary laboratory experiments. Polarimetric imaging in Fe X 637.4, Fe XI 789.2, Fe XIII 1074.7 and Fe XIV 530.3 nm, in S IX 1252.4 and Si X 1430.5 nm, in H alpha 656.3 nm, in He I 587.6 and He I 1083 nm, will be combined with spectroscopy in the visible and near infrared with polarization to target the properties of different ionization states of Fe, one from Si and S, and neutral hydrogen and helium. They will yield for the first time the locations in the corona where the transition from a collisional to a collisionless plasma occurs, and where the coupling between the different species decreases rapidly. This physics-based Independent Investigation for NASA's LWS TR&T program will explore the interconnected properties of coronal magnetic fields, heavy ions, neutrals, and dust grains in the corona. It will thus fill some of the deficiencies in the current understanding of the drivers of the solar wind. The complement of proposed instruments and observations will also serve as a test for an instrument suite for future space-based observations to explore this critical region of the solar wind flow that continuously shapes and controls Earth's magnetic environment.

Publications:

Performance YearReferenceInvestigation TypeActions
1Habbal, S. Rifai; Druckmüller, M.; Morgan, H.; Daw,...
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1Habbal, Shadia Rifai; Morgan, Huw; Druckmüller, Milos...
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1Habbal, S. Rifai; Druckmüller, M.; Morgan, H.; Schol...
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1Habbal, Shadia Rifai; Druckmüller, Miloslav; Morgan, ...
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1Habbal, S. Rifai; Morgan, H.; Druckmüller, M.; Ding,...
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1Judge, P. G.; Habbal, S.; Landi, E.; (2013), From Forb...
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Presentations:

Performance YearReferenceActions
1Habbal, S. R.; Daw, A. N.; Morgan, H.; Johnson, J.;...
1Habbal, Shadia R.; Daw, A.; Morgan, H.; Johnson, J.;...
1Habbal, Shadia R.; Druckmuller, M.; Morgan, H.; Schol...
1Kucera, T. A.; Berger, T. E.; Boerner, P.; Dietzel,...
1Habbal, S. R.; Druckmuller, M.; Morgan, H.; Solar Wi...
1Habbal, S. R.; Morgan, H.; Druckmüller, M.; (2011), A...
1Habbal, Shadia R.; Druckmuller, M.; Morgan, H.; Ding,...
1Habbal, Shadia R.; Druckmuller, M.; Morgan, H.; Ding,...
1Habbal, Shadia R.; Landi, E.; Morgan, H.; Druckmuller...
1Habbal, S. R.; Druckmuller, M.; Morgan, H.; (2012), Th...

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