The traditional summer workshop on Time-Distance Helioseismology and Acoustic Holography will be held on July 20-22, 2009, at Stanford, CA. The main goal of this informal workshop is to discuss the recent progress in the time-distance helioseismology, acoustic imaging  and holography techniques, theoretical interpretation of new results, realistic numerical simulations, 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 wave propagation and sensitivity kernels;
• advances in the measurement and inversion techniques;
• testing helioseismic inferences with realistic numerical simulations;
• wave interaction with magnetic fields;
• diagnostics of small-scale structures;
• sunquakes, high-frequency waves and atmospheric seismology;
• large-scale, meridional flows and solar-cycle effects;
• structure and dynamics of active regions and emerging magnetic flux;
• tachocline and far-side imaging;
• calibration of Doppler measurements;
• local helioseismology results from SOHO, GONG and Hinode;
• software development for the HMI data analysis pipeline;
• new approaches to data analysis, modeling, data assimilation, etc.

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 .