GC98 - GCNEWS, Vol. 8, August 1998


A Newsletter for Galactic Center Research
This Volume was edited by Angela Cotera & Heino Falcke
email: gcnews@aoc.nrao.edu

Volume 8, August 1998 - WORKSHOP PROGRAM

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"The Central Parsecs" - Galactic Center Workshop 1998

Tucson, September 7-11, 1998

Monday, September 7th

Session I: What is the Central Mass Concentration? What are the size and spectrum of Sgr A*?

Session moderator: Eric Becklin
08:55-09:00 Introduction and Workshop Welcome (Angela Cotera)*
09:00-09:30 The Dark Mass in the Center of the Milky Way (Reinhard Genzel)*
09:30-09:50 New Proper Motion Data (Andreas Eckart)*
09:50-10:10 High Proper Motion Stars in the Vicinity of Sgr A* (Andrea Ghez)*
10:10-10:30 NICMOS observations of the central Parsec (Marcia Rieke)*
10:30-11:00 Coffee Break
11:00-11:20 Constraints on the mass of SgrA* from its proper motion (Mark Reid)*
11:20-11:40 NICMOS Observations of the Central Parsec: Deep Imaging at 1.6 microns, Short-Term Variability, and Ionized Emission (Susan Stolovy)*
11:40-12:40 Discussion
12:40      Lunch (On Site)

Session II: Can VLBI constrain the size and structure of Sgr A*?

Session moderator: Anton Zensus
14:30-14:50 Corruption of the Visibility of Sgr A* by Intervening Plasma (Don Backer)*
14:50-15:10 7mm evidence for intrinsic source size and structure of Sgr A* (K.Y. Lo)*
15:10-15:30 7 mm VLBI Imaging of Sgr A* (Geoff Bower)*
15:30-15:50 Millimeter Observations of Sgr A* (Thomas Krichbaum)*
15:50-16:20 Coffee Break
16:20-16:40 86GHz VLBI observations of Sgr A* (Shep Doeleman)*
16:40-17:00 Flare of Sgr A* at 100 Ghz (Masato Tsuboi)*
17:00-18:00 Discussion
20:00 Volleyball Tournament (optional)

Tuesday, September 8th

Session III: How do we reconcile Models and Observations of Sgr A*?

Session moderator: Reinhard Genzel
09:00-09:30 Introduction (Fulvio Melia)*
09:30-09:50 Explaining the spectrum of Sgr A* using a two temperature plasma (R. Mahadevan/R. Narayan)*
09:50-10:10 The Influence of an Advection-dominated Accretion Flow on the Appearance of Sgr A* (T. Beckert)*
10:10-10:40 Coffee Break
10:40-11:00 The jet model for Sgr A* and the nature of the submm-bump (Heino Falcke)*
11:00-11:20 Sgr A* - The radio spectrum (Wolfgang Duschl)*
11:20-12:20 Discussion
12:20      Lunch

Session IV: Morphology and Gas Dynamics within Sgr A West: How are the various components of Sgr A West related?

Session moderator: Peter Mezger
14:20-14:50 The Various Components of Sgr A West and their Interrelationship (Farhad Yusef-Zadeh)*
14:50-15:10 3D Simulations of the Gas Dynamics in the Central Region (Robert Coker)*
15:10-15:30 Proper Motions and Structure of the Radio Components around Sgr A* (Jun-Hui Zhao)*
15:30-15:50 Mid-infrared observations of Sgr A West from Keck (Angela Cotera)*
15:50-16:20 Coffee Break
16:20-16:40 Sgr A* in the Mid-Infrared Reference Frame: The Relationship Between the Radio and Infrared Sources in the Central Parsec (Dan Gezari)*
16:40-17:00 Theoretical studies of the Circumnuclear Disk (Robert Sanders)*
17:00-18:00 Discussion
18:00      Tour of the Mirror Lab?

Wednesday, September 9th

08:00-12:00 Arizona Sonoran Desert Museum
12:00      Lunch

Session IV: continued

Session V: How, when, where and why are stars formed in the GC?

Session moderator: Kris Sellgren
13:00-13:30 Stellar Interactions in Dense Clusters (Fred Rasio)*
13:30-13:50 Stellar Content of the Galactic Center (Bob Blum)*
13:50-14:10 Stellar Content of the central 30pc (Peter G. Mezger)*
14:10-14:30 Properties of stars in the galactic center (Thomas Ott)*
14:30-15:00 Coffee Break
15:00-15:20 The Arches Cluster (Gene Serabyn)*
15:20-15:40 NICMOS observations of the Quintuplet Cluster (Don Figer)*
15:40-16:00 Theoretical modelling of stars (Paco Najarro)*
16:00-17:00 Discussion
17:00      Break for the day
18:30 No host Cocktail Hour (The Last Territory)
19:30 Workshop Banquet (The Last Territory)

Thursday, September 10th

Session VI: What is the metallicity as determined by old and new stars?

Session moderator: ?
09:00-09:20 Stellar abundances at the GC (Solange Ramirez)*
09:20-09:40 OH/IR stars as signposts for ancient starburst activity in the Galactic center (Lorant Sjouwerman)*
09:40-10:00 Discussion
10:00-10:30 Coffee Break

Session VI: How do the various components of the inner 100 parsecs interact with each other?

Session moderator: Miller Goss
10:30-10:50 Wide-field Imaging of the Galactic Center (Namir Kassim)*
10:50-11:10 Sgr East and it's interactions with the surrounding gas (Robert Zylka)*
11:10-11:30 Recombination lines from the SgrA complex near 20 cm (K.R. Anantharamaiah)*
11:30-12:00 Discussion
12:00      Lunch
14:00-14:20 OH 1720 MHz Masers at the GC (Mark Wardle)*
14:20-14:40 Free Electrons and Radio-Wave Scattering in the GC (T. Joseph Lazio)*
14:40-15:30 Discussion
15:30-16:00 Coffee Break

Session VII: What is the strength of the magnetic field in the GC and what are its large and small scale effects?

Session moderator: Yoshiaki Sofue
16:00-16:20 Magnetic Fields in the Sagittarius A region (Doug Roberts)*
16:20-16:40 Far-infrared/Submillimeter Polarimetric Observations of the Galactic Center (Giles Novak)*
16:40-17:00 The Galactic Center Radio Threads: A Multifrequency, Polarimetric Study (Cornelia Lang)*
17:00-18:00 Discussion
18:00      Tour of the Mirror Lab?

Friday, September 11th

Session VIII: How "standard" are the central regions of our Galaxy? What would the GC look like from 1 Mpc?

Session moderator: Heino Falcke
08:00-08:20 The GC in comparison to AGN (Ski Antonucci)*
08:20-08:40 Is the GC a broad line/Seyfert/LINER Galaxy? (George Rieke)*
08:40-09:00 The MIR Spectrum in the GC: a Starburst Nucleus (Janet Simpson)*
09:00-09:30 Discussion
09:30-10:00 Coffee Break

Session IX: What can we learn from High-energy emission in the GC?

Session Moderator: Fulvio Melia*
10:00-10:20 AXAF X-ray Observations of the Galactic Center (Gordon Garmire)*
10:20-10:40 Cosmic rays in the GC (Peter Biermann)*
10:40-11:00 gamma -rays from the GC: A Point-like or Diffuse Source? (Sera Markoff)*
11:00-11:20 The Galactic Center EGRET Source and the Broad-band Spectrum of Sgr A East (Marco Fatuzzo)*
11:20-11:40 Cold Matter measurements in the GC with the X-ray satellite ASCA (Masaaki Sakano)*
11:40-12:00 Coffee Break
12:00-12:30 Discussion
12:30-13:00 Closing Thoughts and Workshop Summary (Charles Townes)*
13:00      Lunch
14:00 Leave for the Grand Canyon (optional)

All Week


(only first Author is listed here)
(-) Accretion Disk Instabilities in the Vicinity of Black Holes (W. Auer)*
(-) Acceleration processes towards a quasi-monoenergetic electron distribution (Zeno Jauch)*
(-) ASCA Observations of the Sgr A region (Y. Maeda)*
(-) Life Time of the Radio Arc Filaments determined by mm-Wave Observations with the 100-m Telescope (Y. Sofue)*
(-) Spatially Resolved Dust Shells in the Central Parcec (Angelle Tanner)*
(-) Physical Properties of OH/IR Stars Close to the Galactic Center (Anders Winnberg)*

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