BBSO 2007 Science Planning. Focal Plane Instruments. AO (Wenda, Nicolas, Deqing, Patricia and Park) IRIM (Wenda and Park) VIM (Chang Liu, Na Deng and Carsten) Real-time Speckle (Ed Komenda and Carsten, taken over by Chang and Na as the one of first-light NST instruments)
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(flat field, rotation): Wenda, Carsten and Park,
Jun Ma, Park, Changyi Tan and Patricia Jibben (to join us in Sept.)
of flares and CMEs (Chang Liu)
Moreton Waves/ Type II Bursts, Reversed type III bursts
Vasyl and Ju Jing
Magnetic Topology of CME and Magnetic Clouds
NASA/LWS project : “Understanding magnetic complexity in active regions from structure functions of observed magnetic fields”
PI: Vasyl Yurchyshyn
1. Collaboration with the Heliospheric Focus Team (T. Zurbuchen, L Fisk,
S. Antiohos). In particular, acquisition of parameters of magnetic field
Inside CHs and testing of different mechanisms for coronal hole formation and
solar wind acceleration.
2. Magnetic power spectrum from full-disk MDI magnetograms.
3. Coronal heating and photospheric parameters (power index and magnetic energy dissipation).
4. Analysis of intermittency of solar turbulence.
Haimin, Ju, Haisheng, Jiong, Hudson and Lixun Li (student)
Contraction motion of ribbons
Students: Gang Fu, Hui Song, Ed Komenda and Naomi
Real-time data processing
Space Weather forecasting
Development of tools to handle vector magnetograms
Use IRIM to co-observe with SOT
Space Weather proposal (pending) : Observed Elongation of LASCO Halo CMEs and its Connection to the Structure of Magnetic Clouds
By Vasyl Yurchyshyn
Solar coronal mass ejections (CMEs) usually exhibits a complex three-part structure which includes a magnetic flux rope and it is thought that the orientation of a halo CME elongation corresponds to the orientation of the flux rope.
Our recent preliminary study showed that for about 64% of CME-ICME events, their orientations do not change significantly (less than 45 deg rotation) while traveling in the heliosphere to the near earth environment. These findings thus strongly motivate the work presented in this proposal.
Specifically, we will further investigate, via data analysis and with reference to relevant models, the correspondence between the elongation of halo CMEs, the structure of magnetic clouds (MCs) and the tilt of the heliospheric current sheet.
To achieve our goal, we will measure:
-the tilt of at least 35+ elongated halos;
-the orientations of the corresponding MCs;
-the local tilt (near a CME source region) of the heliospheric current sheet and
-the magnetic orientation angle in solar active regions.
Erupting flux rope model will be used to fit the observed structure of MCs and to produce synthetic coronagraphic images.
Research topics: magnetic fields in coronal holes (with L.Fisk);
intermittency of the magnetic field of the solar wind ( with B.Vasquez).
2. NASA/SW : “Turbulence in the Solar Photosphere”
Research topics: power index as a tool to predict flare productivity of ARs
(with V Yurchyshyn).; study of the turbulence in the photosphere.
1. NASA/LWS : “Distribution and Dynamics of the Magnetic Flux on the Base of the
Solar Heliosphere ” (as extension of the current 2-year project)
Solar Flare Prediction (Ju Jing)
Artificial Intelligence (Ju Jing)
Development of EFRs
Applied Information Research
Flows in ARs