Solar Spicules, Spicule-like Features, and their Magnetic Environment
ROSES ID: NNH07ZDA001N Selection Year: 2008
Program Element: Focused Science Topic
Principal Investigator: Alphonse Sterling
Affiliation(s): NASA/MSFC/NSSTC
Project Member(s):
Lites, Bruce W Collaborator National Center for Atmospheric Research
Moore, Ronald Lee Co-I MSFC/NSSTC
Summary:
Solar spicules, and similar features, are a major component of the
magnetically-dominated solar atmosphere between the photosphere and the low
corona. As such, they are a crucial factor in the lower boundary condition of
the heliospheric space weather system. We propose a three-year program to
study chromospheric and UV/EUV spicules, and their relationships with their
magnetic environments. Our data will be from the Solar Optical Telescope (SOT)
and the EUV Imaging Spectrometer (EIS) on the Hinode satellite, supplemented
with UV/EUV images from TRACE, and images of X-ray jets from the Hinode X-Ray
Telescope (XRT). Magnetic field data will be vector magnetograms from SOT,
supplemented with line-of-sight magnetograms from SOT and from SOHO/MDI. We
will study the morphology and the statistics of: (1) the magnetic
characteristics at the bases of various spicules and jets, and (2) the relative
appearance of the various spicules and jets at different wavelengths. This
investigation will address questions such as: whether some types of spicules are
produced by a magnetic, rather than a purely wave-based, mechanism; what
magnetic configurations are necessary for the existence of spicules and jets;
what percentage of chromospheric spicules evolve into UV/EUV spicules; and what
chromospheric features correspond to X-ray jets. We will train and partially
support a postdoctoral-level scientist during this program.
Publications:
Performance Year | Reference | Investigation Type | Actions |
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1 | Pasachoff, Jay M.; Jacobson, William A.; Sterling, Al...
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1 | Sterling, Alphonse C.; Moore, Ronald L.; DeForest, Cr...
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1 | Moore, Ronald L.; Cirtain, Jonathan W.; Sterling, Alp...
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1 | SantolÃk, O.; Pickett, J. S.; Gurnett, D. A.; Menie...
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Presentations:
Performance Year | Reference | Actions |
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1 | Sterling, Alphonse C,; (2009), Solar Spicules Near and at ...
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1 | Sterling, Alphonse C.; Moore, R. L.; DeForest, C. E....
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1 | Moore, Ronald L.; Cirtain, J. W.; Sterling, A. C.; (...
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1 | Sterling, A. C.; Moore, R. L.; (2012), Solar SpiculesÂ...
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1 | Tsurutani, Bruce; Mannucci, A. J.; Verkhoglyadova, Olg...
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1 | Tsurutani, B.; Verkhoglyadova, O. P.; Lakhina, G. S.;...
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1 | Tsurutani, B.; Verkhoglyadova, O. P.; Santolik, O.; P...
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