The traditional summer workshop on Time-Distance Helioseismology and Acoustic Holography will be held on August 6-9, 2007, at Stanford, CA. The main goal of the workshop is to discuss the recent progress in the time-distance and holography techniques, new results, perspectives and plans for analysis of SDO/HMI, SOHO/MDI, Hinode/SOT, and GONG data.
Among the topics for discussion are: theoretical and empirical models of sensitivity kernels; testing measurements and inversion techniques with realistic numerical simulations and wave propagation models; wave interaction with magnetic fields; effects of non-uniform excitation and damping; feature kernels and diagnostics of small-scale structures; high-frequency waves and atmospheric seismology; sunquake seismology; solar-cycle effects; large-scale and meridional flows; structure and dynamics of active regions; diagnostics of emerging magnetic flux; tachocline and far-side imaging; calibration of Doppler measurements; initial helioseismology results from Hinode; status and plans of data analysis software development for the HMI data analysis pipeline.
The workshop will take place in the conference room (102/103) in the new Astrophysics Building at Stanford. The directions and hotel information are available at http://soi.stanford.edu/general/meetings/public_html/visitor.html .
Agenda
Monday, August 6
9:30 - 12:30
Session 1. Observations of oscillations and waves
in magnetic regions and quiet Sun. I.
P. Rajaguru - Propagating waves in sunspot penumbra; flows vs.
signatures of propagating waves in travel times
S. Couvidat - Ring-like structures in travel-time maps of sunspots
R. Wachter - Generalized definition of the Dopplergram observation
height of a filtergraph instrument like MDI or HMI
T. Duvall - Wave interaction with magnetic elements
2:00 - 5:30
Session 2. Numerical simulations. I.
R. Stein - Status of 96 Mm wide by 20 Mm deep simulations
D. Georgobiani - Data for helioseismology testing
L. Jacoutot - Turbulence models and wave excitaion
T. Hartlep - Global wave simulations
Tuesday, August 7
9:30 -12:30
Session 3. Observations of oscillations and waves
in magnetic regions and quiet Sun. II.
A. Birch - Supergranulation
T. Sekii - Helioseismology from Hinode
K. Nagashima - Observation of sunspot oscillations from Hinode
C. Rabello-Soares - Frequency variation due to solar cycle and
magnetic field
2:00- 5:30
Session 4. Numerical simulations. II.
M. Cheung - Magnetic flux emergence: Photospheric and sub-surface
evolution
S. Hanasoge - Linear wave modeling
K. Parchevsky - Direct and indirect magnetic effects
J. Zhao - Use of simulation data in helioseismic validation and
enhancement
Wednesday, August 8
Session 5. Time-Distance and Holography Methods and Data Analyses
9:30 - 12:30
A. Birch - Born-approximation kernels
O. Burtseva - Dispersion and lifetime effects
S. Kholikov - Meridional flow measurements from GONG
J. Zhao - Magnetic effects in time-distance helioseismology
Session 6. HMI data analysis pipeline
2:00- 5:30
P. Scherrer - HMI status and plans
A. Kosovichev - Plan for HMI time-distance pipeline
A. Amezcua - HMI Data Record Management System (DRMS) and analysis
pipeline
J. Zhao - Demonstration codes for the HMI TD pipeline
Thursday, August 9
Session 7. Far-side and deep interior imaging
9:30 - 12:30
I. Gonzalez Hernadez - Calibration of the far-side seismic holography
signal
J. Zhao - Far-Side and Tachocline Imaging by Time-Distance Technique
D. Gough - Physics of the Tachocline
Session 8. Novel techniques and ideas
2:00 - 4:00
M. Woodard - Progress with Forward Modeling
D. Chou - Acoustic Holograms of Sunspots
A. Kosovichev - Oscillations and waves excited by flares