Program & Abstract Book 17th August 2007 http://www.mps.mpg.de/meetings/seismo/helas2/ Gottingen¨ August 20-24, 2007 Program and Abstract Book 17th August 2007 Andreas Lagg ([email protected]) PROGRAM i Program 08:00 - 08:15 Welcome addresses and LOC announcements Laurent Gizon, Oskar von der Luhe,¨ Stefan Dreizler Monday, 08:15 - 12:00 Session 1 Chair: Stefan Dreizler Outstanding Problems and Key Observations in Solar and Stellar Physics 08:15 - 09:00 Norbert Langer (invited) Stellar structure and evolution: unsolved problems ............................... 1 09:00 - 09:40 Laurent Eyer (invited) Variable stars across the observational HR diagram ............................... 2 09:40 - 10:40 Coffee & Posters 10:40 - 11:20 Matthias Rempel (invited) Solar and stellar activity cycles ................................................. 3 11:20 - 12:00 Sami K. Solanki (invited) Magnetic active regions and sunspots ........................................... 4 12:00 - 13:30 Lunch Monday, 13:30 - 18:30 Session 2 Chair: Conny Aerts Asteroseismology: Observations 13:30 - 13:50 Andrzej Pigulski (invited) Asteroseismology with ground-based photometric observations: abilities, limitations and achievements ............................................................. 5 13:50 - 14:10 Hans Bruntt (invited) A new level of photometric precision from space: binary stars with the WIRE satellite 6 14:10 - 14:30 Gordon Walker (invited) Recent MOST space photometry ............................................... 7 14:30 - 15:10 Eric Michel (invited) First assessment of CoRoT data ................................................ 8 15:10 - 16:10 Coffee & Posters ii PROGRAM 16:10 - 16:30 Wolfgang Zima (invited) Spectroscopic observations .................................................... 9 16:30 - 16:45 Maarten Desmet Spectroscopic mode identification for the β Cephei star 12 Lacertae . 10 16:45 - 17:00 Sonja Schuh Observations of hot compact pulsators: the subdwarf B variables . 11 17:00 - 17:15 Artie Hatzes Stellar oscillations of planet hosting K Giant stars ................................ 12 17:15 - 17:30 David Mkrtichian Asteroseismology of Przybylski’s star with HARPS: Constraints on the stellar model and the global magnetic field ................................................... 13 18:30 Poster session with dinner buffet PROGRAM iii Tuesday, 08:00 - 12:00 Session 3 Chair: Mario Monteiro Asteroseismology: Theory and Modelling 08:00 - 08:20 Alexey Pamyatnykh (invited) Opacity driven oscillations along the Main Sequence ............................. 14 08:20 - 08:40 Hideyuki Saio (invited) Modelling magnetic oscillators ................................................. 15 08:40 - 09:00 Arlette Noels (invited) Modelling pulsations in hot stars with winds ..................................... 16 09:00 - 09:15 Anne Thoul Asteroseismology of β Cephei stars: effects of the chemical composition on the deter- mination of the global stellar parameters. ........................................ 17 09:15 - 09:30 Marc-Antoine Dupret New aspects on the driving of pulsating stars .................................... 18 09:30 - 10:30 Coffee 10:30 - 10:50 Patrick Eggenberger (invited) Modelling solar-like oscillators ................................................. 19 10:50 - 11:10 Suzanna Randall (invited) Modelling compact pulsators ................................................... 20 11:10 - 11:30 Daniel Reese (invited) Modelling rapid rotators ....................................................... 21 11:30 - 11:45 Jadwiga Daszynska-Daszkiewicz´ The photometric method of mode identification for rapidly rotating SPB stars. An application to µ Eridani. .................................................... 22 11:45 - 12:00 Stephane´ Mathis Transport in stellar radiation zones by internal gravity waves influenced by the Coriolis acceleration .................................................................. 23 12:00 - 13:30 Lunch Tuesday, 13:30 - 17:30 Session 4 Chair: Michael Thompson Global Helioseismology and Solar Models 13:30 - 13:50 Rafael A. Garcia (invited) Low degree modes ............................................................ 24 iv PROGRAM 13:50 - 14:10 Giuseppe Severino (invited) Velocity and intensity power spectra of solar oscillations .......................... 25 14:10 - 14:30 Sylvain Korzennik (invited) High degree modes & instrumental effects ....................................... 26 14:30 - 14:45 Kevin Belkacem Amplitudes of non-radial oscillations driven by turbulence ........................ 27 14:45 - 15:00 Yuzef Zhugzhda Analytical signal as a tool for helioseismology ................................... 28 15:00 - 16:00 Coffee 16:00 - 16:20 Jesper Schou (invited) Temporal variations of global mode frequencies .................................. 29 16:20 - 16:35 Manfred Kuker¨ Modelling solar and stellar differential rotation ................................... 30 16:35 - 16:55 Sylvaine Turck-Chieze (invited) Solar structure models ......................................................... 31 16:55 - 17:15 Mark Miesch (invited) Solar dynamo models ......................................................... 32 17:15 - 17:30 K. M Hiremath Estimation of magnetic flux in the solar convective envelope from the initial observa- tions of the sunspots ........................................................... 33 PROGRAM v Wednesday, 08:30 - 12:00 Session 5 Chair: Laurent Gizon Waves, Waves & Waves 08:00 Buses to Gottingen¨ University 08:30 - 09:00 Mathias Fink (invited) Time-reversal acoustics ........................................................ 34 09:00 - 09:30 Bruce Cornuelle (invited) Ocean acoustic tomography .................................................... 35 09:30 - 10:00 Guust Nolet (invited) Terrestrial seismic tomography: An overview .................................... 36 10:00 - 10:30 Refreshments 10:30 - 11:00 Robert Wagoner (invited) Diskoseismology ............................................................. 37 11:00 - 11:30 Bernard Schutz (invited) Oscillations of neutron stars and black holes ..................................... 38 11:30 - 12:00 Edward Wright (invited) Acoustic oscillations in the early universe ....................................... 39 12:00 Packed Lunch 13:15 Excursion to the city of Goslar 20:00 Conference dinner at Rathskeller, Gottingen¨ vi PROGRAM Thursday, 08:00 - 12:00 Session 6 Chair: Markus Roth Local Helioseismology 08:00 - 08:20 Jason Jackiewicz (invited) The forward and inverse problems in local helioseismology. ....................... 40 08:20 - 08:40 Thomas Duvall (invited) Wave scattering by small-scale inhomogeneities .................................. 41 08:40 - 08:55 Rekha Jain Absorption and scattering of acoustic waves from a thin magnetic flux tube . 42 08:55 - 09:15 Irene Gonzalez Hernandez (invited) Subsurface flows from ring-diagram analysis .................................... 43 09:15 - 09:30 Rudolf Komm Kinetic helicity of subsurface flows and magnetic flux ............................ 44 09:30 - 10:30 Coffee 10:30 - 10:50 Paul Cally (invited) Acoustic imaging of magnetic activity .......................................... 45 10:50 - 11:10 Dean-Yi Chou (invited) Acoustic holograms of solar active regions ...................................... 46 11:10 - 11:25 Hamed Moradi Sound speed inversions of a model sunspot using time-distance helioseismology . 47 11:25 - 11:45 Robert Cameron (invited) Simulations of wave propagation through model sunspots ......................... 48 11:45 - 12:00 D. Shaun Bloomfield The nature of running waves in sunspot penumbrae ............................... 49 12:00 - 13:30 Lunch Thursday, 13:30 - 17:30 Session 7 Chair: Jørgen Christensen-Dalsgaard Magnetoconvection, Coronal Helioseismology and Concluding Talks 13:30 - 13:50 Alexander Vogler¨ (invited) Realistic simulations of magnetoconvection ...................................... 50 13:50 - 14:05 Takashi Sekii (invited) Hinode observations ........................................................... 51 PROGRAM vii 14:05 - 14:20 Sergey Ustyugov Three dimensional simulation of local solar supergranulation with realistic physics . 52 14:20 - 14:40 Valery Nakariakov (invited) Coronal helioseismology: Observations ......................................... 53 14:40 - 15:00 Jaume Terradas (invited) Coronal helioseismology: modelling ............................................ 54 15:00 - 16:00 Coffee 16:00 - 16:30 Aaron Birch (invited) Conclusion: Helioseismology .................................................. 55 16:30 - 17:00 Donald Kurtz (invited) Conclusion: Asteroseismology ................................................. 56 17:00 - 17:30 Frank Hill (invited) Survey of future projects ....................................................... 57 viii PROGRAM Friday, 08:30 - 15:00 Session 8 Splinter Meetings 08:30 - 10:00 Jørgen Christensen-Dalsgaard Splinter Meeting: Future asteroseismology projects .............................. 58 10:00 - 11:00 Coffee 11:00 - 12:30 Frank Hill Splinter Meeting: Future helioseismology projects ............................... 59 12:30 - 13:30 Lunch 13:30 - 15:00 Laurent Gizon Splinter Meeting: HELAS local helioseismology ................................. 60 15:00 End of Meeting PROGRAM ix Poster Session: Asteroseismology and Stellar Physics PA.01 Pedro J. Amado Near infrared spectroscopy of two HADS stars: V703 Sco and 1 Mon. First steps towards the use of near-IR spectroscopy for the study of pulsating stars . 61 PA.02 Victoria Antoci The Beta Cephei star HD