GONG 2008/SOHO XXI

Solar-stellar dynamos as revealed by helio- and asteroseismology

August 11-15, 2008 - Boulder, Colorado


Agenda


Sunday (August 10)


05:00PM-08:00PM
Registration and reception

Monday (August 11)


08:00AM-08:45AM
Warming up and light breakfast (tea/coffee/cold drinks with light snacks)

Conference opening
Chair: Doug Braun
08:45AM-09:05AM
Opening remarks : Michael Knoelker

09:05AM-09:15AM
Welcome note : Mausumi Dikpati

09:15AM-09:45AM
Keynote talk : Paul Cally -
00.01 Seismology and the Dynamo: History and Prospects

Session 01: Helioseismology, Local
Chair: Doug Braun
09:45AM-10:15AM
Invited talk : Martin Woodard -
01.01 Helioseismic Measurement of Large-Scale Solar Flows
10:15AM-10:30AM
Contributed talk : Junwei Zhao -
01.02 Sound-Speed Image of Tachocline and Its Evolution From Time-Distance Helioseismology

10:30AM-11:00AM
Coffee break

Session 01: Helioseismology, Local (continued)
Chair: Doug Braun
11:00AM-11:30AM
Invited talk : Brad Hindman -
01.03 Solar Subsurface Flows
11:30AM-11:45AM
Contributed talk : Jason Jackiewicz -
01.04 Mass Flows Around Sunspots
11:45AM-12:00PM
Contributed talk: Dean-Yi Chou -
01.05 A New Method to Probe the Interaction Between Solar Acoustic Waves and Magnetic Regions

12:00PM-13:30PM
Lunch


Session 01: Helioseismology, Local (continued)
Chair: Rachel Howe
13:30PM-14:00PM
Invited talk: Elena Khomenko -
01.06 Modelling of Waves in Sunspots
14:00PM-14:15PM
Contributed talk: Alexander Kosovichev -
01.07 New Results of High-Resolution Helioseismology from Hinode
14:15PM-14:30PM
Contributed talk: Hannah Schunker -
01.08 Sunspots, Random Waves, and the SLiM Code
14:30PM-14:45PM
Contributed talk: Rekha Jain -
01.09 Interaction of p-Modes With a Thin Magnetic Flux Tube
14:45PM-15:00PM
Contributed talk: Konstantin Parchevsky -
01.10 Excitation, Propagation and Conversion of Helioseismic MHD Waves in Strong Field Regions

15:00PM-16:00PM
Coffee Break and Posters

Session 01: Helioseismology, Local (continued)
Chair: Rachel Howe
16:00PM-16:15PM
Contributed talk: Steve Tomczyk -
01.11 Seismology of the Solar Corona
16:15PM-16:30PM
Contributed talk: Laetitia Jacoutot -
01.12 Realistic MHD Simulations of Solar Convection and Oscillations in Magnetic Regions: Mode Excitation and Effect of Acoustic Halo
16:30PM-16:45PM
Contributed talk: Sergei Zharkov -
01.13 Time-Distance Analysis of Numerical Simulation of Acoustic Wave Propagation in the Solar Subphotosphere With Localized Magnetic Field Concentration


16:45PM-17:30PM
Group Discussion led by Aaron Birch


Tuesday (August 12)


08:00AM-08:45AM
Warming up and light breakfast

Session 01/02: Helioseismology, Local and Global
Chair: Rudolf Komm
09:00AM-09:15AM
Contributed talk: Juan Carlos Martinez-Oliveros -
01.14 Magneto-Seismic Study of the X1.2 15 January Solar Flare
09:15AM-09:30AM
Contributed talk: Irene Gonzalez Hernandez -
01.15 Improving the Prediction Capability of the Helioseismic Far-Side Maps
09:30AM-09:45AM
Contributed talk: J. D. Armstrong -
01.16 Time-Distance Envelope Widths: What Can They Tell Ws?
09:45AM-10:15AM
Invited talk: Rachel Howe -
02.01 Magnetic Fields and Temporal Variability
10:15AM-10:30AM
Contributed talk: Anne-Marie Broomhall -
02.02 Are p-Mode Frequencies Predictable From one Solar Cycle to the Next?

10:30AM-11:00AM
Coffee Break

Session 02: Helioseismology, Global
Chair: Rudolf Komm
11:00AM-11:30AM
Invited talk: Sarbani Basu -
02.03 The Solar Metallicity Problem: Do We Have the Solution?
11:30AM-11:45AM
Contributed talk: Katie Mussack -
02.04 Measuring Solar Abundances with Seismology

11:45PM-12:00PM
Group photo


12:00PM-13:30PM
Lunch


Session 02: Helioseismology, Global (continued)
Chair: John Leibacher
13:30PM-14:00PM
Invited talk: Thierry Appourchaux: -
02.05 The quest for solar g modes
14:00PM-14:15PM
Contributed talk: Gerard Grec -
02.06 GOLF: Analysis of the Low Frequency Spectrum and Comparison with a Calculated Solar g-Mode Spectrum
Contributed talk: Savita Mathur -(Cancelled)
02.07 What Can Be Learned With g Modes on the Structure and the Dynamics of the Solar Core?
14:15PM-14:30PM
Contributed talk: Sylvain Korzennik -
02.08 On the Dependence of Our Inferences About the Solar Internal Rotation on the Frequency Fitting Methodology
14:30PM-14:45PM
Contributed talk: Roger New -
02.09 BiSON update
14:45PM-15:00PM
Contributed talk: Christoffer Karoff -
02.10 On Flare Driven Global Waves

15:00PM-16:00PM
Coffee Break and Posters

Session 02: Helioseismology, Global (continued)
Chair: John Leibacher
16:00PM-16:15PM
Contributed talk: Ariane Schad -
02.11 Analysis of Long Solar Oscillation Time Series
16:15PM-16:30PM
Contributed talk: Hugh E. Potts -
02.12 Post-Hoc Derivation of MDI Flat Fields


16:30PM-17:30PM
Group Discussion led by Mike Thompson


Wednesday (August 13)


08:00AM-08:45AM
Warming up and light breakfast

Session 03: Asteroseismology
Chair: Jørgen Christensen-Dalsgaard
08:45AM-09:15AM
Invited talk: Torben Arentoft -
03.01 Solar-Like Oscillations in Procyon A
09:15AM-09:45AM
Invited talk: Thierry Appourchaux -
03.02 Solar like oscillations after 1 year 1/2 observations with CoRoT
09:45AM-10:00AM

Comparing properties of convection in stars with different masses and evolutionary states


Frank Robinson ,  Yale University

Joel Tanner,  Yale University

Sarbani Basu,  Yale University

Pierre Demarque,  Yale University

,  

We present preliminary results from a series of 3D numerical simulations of the outer surface layers of K and G type stars for a range of masses and surface gravities. We look at aspects of the simulations that are not presently captured in 1D stellar models, such as granulation, anisotropic flows (up and down drafts) and the amount of overshoot. These stellar simulations which employ realistic physics can provide data that in the case of the sun can be directly compared to observed quantities such as granule sizes and can explain the discrepancy between observed and computed p-mode frequencies at high frequencies.

back to agenda


10:00AM-10:15AM
Contributed talk: Orlagh Creevey -
03.04 Testing the Potential and Limitations of Seismic Stellar Systems

10:15AM-10:45AM
Coffee Break

Session 03: Asteroseismology (continued)
Chair: Jørgen Christensen-Dalsgaard
10:45AM-11:00AM
Contributed talk: Benjamin Brown -
03.05 Dynamo Action and Wreathes of Magnetism in a Younger Sun
11:00AM-11:30AM
Invited talk: Steven Saar -
03.06 The Activity Cycles and Surface Differential Rotation of Single Dwarfs
11:30AM-12:00PM
Invited talk: Steven Kawaler -
03.07 Stellar Differential Rotation

12:00PM-13:30PM
Lunch


Session 03: Asteroseismology (continued)
Chair: Joyce Guzik
13:30PM-13:45PM
Contributed talk: Daniel Reese -
03.08 Oscillations of Rapidly Rotating Stars
13:45PM-14:00PM
Contributed talk: Conny Aerts -
03.09 The discovery of new pulsators from the CoRoT exoplanet database and their potential for massive star asteroseismology

14:00PM-14:45PM
Group Discussion led by Travis Metcalfe


14:45PM-17:00PM
Tea tasting and tour of Celestial Seasonings


18:00PM
Banquet coaches depart from hotels to Greenbriar Inn


Thursday (August 14)


08:00AM-08:45AM
Warming up and light breakfast

Session 04: Solar Activity: Role of Convection, Tachocline, Dynamo and Data-assimilation
Chair: Peter Gilman
09:00AM-09:15AM
Contributed talk: Robert Stein -
04.01 Supergranule Scale Solar Convection Simulations
09:15AM-09:30AM
Contributed talk: Sergey Ustyugov -
04.02 Realistic Magnetohydrodynamic Simulation of Solar Local Supergranulation
09:30AM-10:00AM
Invited talk: Axel Brandenburg -
04.03 Turbulence simulations showing mean-field dynamos
10:00AM-10:30AM
Invited talk: Mark Miesch -
04.04 Global MHD Simulations of Solar and Stellar Dynamos

10:30AM-11:00AM
Coffee Break

Session 04: Solar Activity: Role of Convection, Tachocline, Dynamo and Data-assimilation (continued)
Chair: Peter Gilman
11:00AM-11:15AM
Contributed talk: Gustavo Guerrero -
04.05 Turbulent Magnetic Pumping in Babcock-Leighton Dynamos
11:15AM-11:30AM
Contributed talk: Matthias Rempel -
04.06 Energetics of the Large Scale Solar Dynamo
11:30AM-12:00PM
Invited talk: Rainer Arlt -
04.07 Instabilities in the Magnetic Tachocline

12:00PM-13:30PM
Lunch


Session 04: Solar Activity: Role of Convection, Tachocline, Dynamo and Data-assimilation (continued)
Chair: Shravan Hanasoge
13:30PM-13:45PM
Contributed talk: Charles Baldner -
04.08 Solar Cycle Related Changes at the Base of the Convection Zone
13:45PM-14:00PM
Contributed talk: Virendra Verma -
04.09 On the Long-Term Cyclic Period of North-South Asymmetry of Solar Active Region Phenomena
14:00PM-14:15PM
Contributed talk: Yuhong Fan -
04.10 Modeling the subsurface evolution of emerging active region flux tubes
14:15PM-14:30PM
Contributed talk: David Hathaway -
04.11 The Advection of Supergranules by Large-Scale Flows
14:30PM-15:00PM
Invited talk: Markus Roth -
04.12 Data Assimilation and Helioseismology

15:00PM-16:00PM
Coffee Break and Posters

Session 04: Solar Activity: Role of Convection, Tachocline, Dynamo and Data-assimilation (continued)
Chair: Shravan Hanasoge
16:00PM-16:15PM
Contributed talk: Irina Kitiashvili -
04.13 Implementation of Data Assimilation Methods for Dynamo Models to Predict Solar Activity
16:15PM-16:30PM
Contributed talk: Stephen Fletcher -
04.14 Efficient Pseudo-Global Peak-Bagging for Helioseismic Data
16:30PM-16:45PM
Contributed talk: Rick Bogart -
04.15 Local Helioseismology Data Products From the HMI Analysis Pipeline

16:45PM-17:30PM
Group discussion led by Matthias Rempel


Friday (August 15)


08:00AM-08:45AM
Warming up and light breakfast

Session 05: Major observational programs
Chair: M. Cristina Rabello-Soares
09:00AM-09:25AM
Invited talk: Frank Hill -
05.01 Connection among data from GONG, SOHO/MDI and HMI
09:25AM-09:50AM
Invited talk: Jesper Schou -
05.02 The Helioseismic and Magnetic Imager - Calibration, Expected Performance and Future Challenges
09:50AM-10:15AM
Invited talk: Travis Metcalfe
05.03 Asteroseismology with the Kepler Mission
10:15AM-10:40AM
Invited talk: Torben Arentoft
05.04 PLATO

10:40AM-11:10AM
Coffee Break

Session 05: Major observational programs (continued)
Chair: M. Cristina Rabello-Soares
11:10AM-11:35AM
Invited talk: Jørgen Christensen-Dalsgaard -
05.05 SONG
11:35AM-12:00PM
Invited talk: Dr. Rainer Kuschnig -
05.06 BRITE-Constellation: nanosatellites and Asteroseismology
12:00PM-12:25PM
Invited talk: John Leibacher -
05.07 SIAMOIS

Conference closing
12:25PM-12:50PM
Final summary: Mike Thompson


Last Updated by Mausumi Dikpati on 07/30/08