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Category: List of Bases 2007 2007 ICTP activities in Trieste ICTP activities in Trieste
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lecture

Start Time:

15 October 2007 at 08:30

Ends On:

26 October 2007

Location:

Trieste - Italy

Venue:

AGH (Giambiagi Lecture Hall)

Organizer(s):

Directors: D. Bhattacharya, S. Massaglia, A. Rogava, S. Sridhar and K. Subramanian

Description:

Web Page: http://users.ictp.it/~smr1865

Material:

Monday, 15 October

Room: Adriatico Guest House Giambiagi Lecture Hall

15 October 2007
08:30
10:45
REGISTRATION AND ADMINISTRATIVE FORMALITIES (All visitors are kindly requested to register with the Secretary outside the Giambiagi Lecture Hall). Those receiving financial support or reimbursements will then have to see our Finance Office in the Fermi Building (after registration). Extra shuttle bus runs will be provided from the Adriatico to the Fermi Building and back for this purpose.
02h15'
10:45
11:00
Inauguration and opening remarks by Professor K.R. Sreenivasan, Director of ICTP.
15'
11:00
12:30
Fluids in Astronomy (I)

Occurrence and character of astrophysical fluids: (1) temperatures, densities, ionisation and composition of stars, interplanetary medium, ISM, ICM, IGM; (2) distribution of magnetic field; (3) heating and cooling of gas; (4) evolution of cosmic gas from big bang to present day
01h30'
Instructor: Dipankar BHATTACHARYA
IUCAA, Pune, India
Tutors: T.D. Saini & S.K. Sethi
12:30
14:00
Lunch Break
01h30'
14:00
15:30
Computational Astrophysics (I)

Numerical simulations in astrophysics: the PLUTO code
01h30'
Instructors: Silvano MASSAGLIA & Andrea MIGNONE
University of Torino, Italy
15:30
15:45
Coffee Break
15'
15:45
17:00
Computational Astrophysics (II)

Basic numerical discretization method: (1) differentiation; (2) integration; (3) interpolation
01h15'
Instructors: Silvano MASSAGLIA & Andrea MIGNONE
Tuesday, 16 October

Room: Adriatico Guest House Giambiagi Lecture Hall

16 October 2007
09:00
10:30
Basic Fluid Dynamics (I)

Introduction: equations of motion; Hydrostatic equilibrium: atmospheres; Steady flow of an ideal fluid; Bernoulli's equation and applications; Vorticity: Circulation theorem; Vortex lines
01h30'
Instructor: Sridhar SESHADRI
Raman Ressearch Institute, Bangalore, India
Tutors: S.K. Sethi & T.D. Saini
10:30
11:00
Coffee Break
30'
11:00
12:30
Fluids in Astronomy (II)

Hydrostatics of planets, stars and cluster gas motion in astrophysical fluids: (1) convection in stars; (2) stellar winds - de Laval nozzle, Parker solution; (3) transonic flows; (4) implosions (gravitational collapse) and explosions
01h30'
Instructor: Dipankar BHATTACHARYA
Tutors: T.D. Saini & S.K. Sethi
12:30
14:00
Lunch Break
01h30'
14:00
15:30
Tutorial

01h30'
15:30
15:45
Coffee Break
15'
15:45
17:00
Tutorial

01h15'
Wednesday, 17 October

Room: Adriatico Guest House Giambiagi Lecture Hall

17 October 2007
09:00
10:30
Basic Fluid Dynamics (II)

Potential flows, incompressible potential flows; Gravity waves and instability
01h30'
Instructor: Sridhar SESHADRI
Tutors: S.K. Sethi & T.D. Saini
10:30
11:00
Coffee Break
30'
11:00
12:30
Fluids in Astronomy (III)

Shock waves in astrophysical fluids
01h30'
Instructor: Dipankar BHATTACHARYA
Tutors: T.D. Saini & S.K. Sethi
12:30
14:00
Lunch Break
01h30'
14:00
15:30
Computational Astrophysics (III)

Theory of linear advection equation: (1) discretization, stability, Upwind method, characteristics; (2) practice session with PLUTO code
01h30'
Instructors: Silvano MASSAGLIA & Andrea MIGNONE
15:30
15:45
Coffee Break
15'
15:45
17:00
Computational Astrophysics (IV)

Theory of linear hyperbolic systems: (1) Riemann problem; (2) characteristic decomposition
01h15'
Instructors: Silvano MASSAGLIA & Andrea MIGNONE
19:00
21:00
Reception - Buffet Dinner, Adriatico Guesthouse
02h00'
Room: Adriatico Guest House Cafeteria
Thursday, 18 October

Room: Adriatico Guest House Giambiagi Lecture Hall

18 October 2007
09:00
10:30
Basic Fluid Dynamics (III)

Viscous fluids: viscous stress and strain tensors; Navier-Stokes equation: energy dissipation; incompressible fluids; Viscous diffusion of vorticity: boundary layers
01h30'
Instructor: Sridhar SESHADRI
Tutors: S.K. Sethi & T.D. Saini
10:30
11:00
Coffee Break
30'
11:00
12:30
Fluids in Astronomy (IV)

Accretion flows, disks, jets (basic treatment), description of astrophysical sources with accretion flows
01h30'
Instructor: Dipankar BHATTACHARYA
Tutors: T.D. Saini & S.K. Sethi
12:30
14:00
Lunch Break
01h30'
14:00
15:30
Tutorial

01h30'
15:30
15:45
Coffee Break
15'
15:45
17:00
Tutorial

01h15'
Friday, 19 October

Room: Adriatico Guest House Giambiagi Lecture Hall

19 October 2007
09:00
10:30
Basic Fluid Dynamics (IV)

Scaling in the NS equations; Flow past obstacles: Stokes flow; Flow past a cylinder: transition to turbulence; Homogeneous, isotropic turbulence
01h30'
Instructor: Sridhar SESHADRI
Tutors: S.K. Sethi & T.D. Saini
10:30
11:00
Coffee Break
30'
11:00
12:30
Tutorial

01h30'
12:30
14:00
Lunch Break
01h30'
14:00
15:30
Computational Astrophysics (VII)

Magnetohydrodynamics (MHD): (1) Riemann problem; (2) approx Riemann solver; (3) practice session (Sod shock tube) with PLUTO; (4) -div.B=0
01h30'
Silvano MASSAGLIA & Andrea MIGNONE
15:30
15:45
Coffee Break
15'
15:45
17:00
Computational Astrophysics (VIII)

Higher order extension
01h15'
Silvano MASSAGLIA & Andrea MIGNONE
Saturday, 20 October - Symposium I - Cosmological Flows (Saturday)

Description: Symposium on Cosmological Flows

Chairperson: Organized by: S.K. Sethi and K. Subramanian

Room: Adriatico Guest House Giambiagi Lecture Hall

20 October 2007
09:00
10:00
The physics of early galaxy formation
01h00'
Andrea Ferrara
S.I.S.S.A., Trieste, Italy
10:00
11:00
The fundamental importance of cooling flows for galaxy formation
01h00'
Pierluigi Monaco
11:00
11:30
Coffee Break
30'
11:30
12:30
History and dynamics of the intergalactic medium
01h00'
Ue-Li Pen
Canadian Institute for Theoretical Astrophysics, Toronto, Canada
12:30
14:00
Lunch Break
01h30'
14:00
15:00
Galactic outflows and the IGM
01h00'
Kandaswamy Subramanian
IUCAA, Pune, India
15:00
16:00
Magnetic fields: Implications for cosmology
01h00'
Shiv Sethi
Raman Research Institute, Bangalore, India
Monday, 22 October

Room: Adriatico Guest House Giambiagi Lecture Hall

22 October 2007
09:00
10:30
Accretion-Ejection Flows (I)

(1) Accretion flows in astrophysics (1.1) Binary stars (1.2) Active galactic nuclei, quasars; (1.3) Young stellar objects
01h30'
Instructor: Andria ROGAVA
KU Leuven, Belgium
Tutor: G. Gogoberidze
10:30
11:00
Coffee Break (Group Photograph will be taken on the Terrace during the break)
30'
11:00
12:30
Magnetohydrodynamics (I)

Basic equation of MHD (a) magnetic fields in astrophysics: pictures and general stuff; (b) Maxwell equations - Ohms law - induction equation; (c) flux freezing and diffusion of magnetic fields; (d) examples and applications of flux freezing
01h30'
Instructor: Kandaswamy SUBRAMANIAN
IUCAA, Pune India
Tutors: S. Sridhar & S.K. Sethi
12:30
14:00
Lunch Break
01h30'
14:00
15:30
Computational Astrophysics (V)

Nonlinear scalar equation: (1) Burger's equation; (2) shocks and rarefactions
01h30'
Instructors: Silvano MASSAGLIA & Andrea MIGNONE
15:30
15:45
Coffee Break
15'
15:45
17:00
Computational Astrophysics (VI)

Euler equations: (1) characteristics, Riemann problem; (2) exact and approximate solution; (3) practice session (Sod shock tube) with PLUTO; (4) extension to multidimension; (5) practice session (2-D) with PLUTO
01h15'
Instructors: Silvano MASSAGLIA & Andrea MIGNONE
Tuesday, 23 October

Room: Adriatico Guest House Giambiagi Lecture Hall

23 October 2007
09:00
10:30
Accretion-Ejection Flows (II)

(2) Spherical accretion (2.1) Collisionless (Zeldovich-Novikov) spherical accretion (2.2) Hydrodynamic (Bondi) spherical accretion
01h30'
Instructor: Andria ROGAVA
Tutor: G. Gogoberidze
10:30
11:00
Coffee Break
30'
11:00
12:30
Magnetohydrodynamics (II)

Basic MHD and MHD waves (a) The Lorentz force and MHD equations; (b) conservation of energy, magnetic helicity; (c) fast/slow and Alfven waves: Elsasser variables
01h30'
Instructor: Kandaswamy SUBRAMANIAN
Tutors: S. Sridhar & S.K. Sethi
12:30
14:00
Lunch Break
01h30'
14:00
15:30
Tutorial

01h30'
15:30
15:45
Coffee Break
15'
15:45
17:00
Tutorial

Guideline for the problems
01h15'
Grigol GOGOBERIDZE
KU Leuven, Belgium
Wednesday, 24 October

Room: Adriatico Guest House Giambiagi Lecture Hall

24 October 2007
09:00
10:30
Accretion-Ejection Flows (III)

(3) Nonrelativistic accretion discs (3.1) Basics of disc accretion (3.2) Radiation mechanisms, variability, instabilities
01h30'
Instructor: Andria ROGAVA
Tutor: G. Gogoberidze
10:30
11:00
Coffee Break
30'
11:00
12:30
Magnetohydrodynamics (III)

MHD applications (a) magneto rotational instability, dispersion relation for a simple case - estimates of growth rates - effects of damping - boundaries; (b) stationary axi-symmetric MHD flows
01h30'
Instructor: Kandaswamy SUBRAMANIAN
Tutors: S. Sridhar & S.K. Sethi
12:30
14:00
Lunch Break
01h30'
14:00
15:30
Presentations by Participants
01h30'
15:30
15:45
Coffee Break
15'
15:45
17:00
Presentations by Participants
01h15'
Thursday, 25 October

Room: Adriatico Guest House Giambiagi Lecture Hall

25 October 2007
09:00
10:30
Accretion-Ejection Flows (IV)

(4) Relativistic accretion discs (4.1) Basics of Schwarzschild and Kerr metrics (4.2) Stress-energy tensor, conservation equations (4.3) Relativistic (Novikov-Thorne) accretion disc
01h30'
Instructor: Andria ROGAVA
G. Gogoberidze
10:30
11:00
Coffee Break
30'
11:00
12:30
Magnetohydrodynamics (IV)

Origin of magnetic fields (a) The generalised Ohm's law; (b) the Biermann battery; (c) Dynamos - mean field dynamo - fluctuation dynamo; (d) application to galaxies and clusters
01h30'
Instructor: Kandaswamy SUBRAMANIAN
Tutors: S. Sridhar & S.K. Sethi
12:30
14:00
Lunch Break
01h30'
14:00
15:30
Tutorial

01h30'
15:30
15:45
Coffee Break
15'
15:45
17:00
Tutorial

01h15'
Friday, 26 October - Symposium II - Accretion-Ejection Flows

Description: Symposium on Accretion-Ejection Flows

Chairperson: Organized by: D. Bhattacharya, S. Massaglia and A.

Room: Adriatico Guest House Giambiagi Lecture Hall

26 October 2007
09:00
09:10
Welcome
10'
09:10
10:00
Numerical simulations of the MRI in the shearing box approximation
50'
Gianluigi BODO
Osservatorio Astronomico, Torino, Italy
10:00
10:50
Modelling MHD jets and outflows
50'
Kanaris TSINGANOS
University of Athens, Greece
10:50
11:20
Coffee Break
30'
11:20
12:10
Modelling accretion-ejection processes in magnetized young star environments
50'
Rony KEPPENS
KU Leuven, Belgium
12:10
14:30
Lunch Break
02h20'
14:30
15:20
Hydrodynamic and spectral properties of accretion and winds around compact objects: a shocking story
50'
Sandip CHAKRABARTI
S.N. Bose National Centre for Basic Sciences, Kolkata, India
15:20
16:10
Poynting jets and MHD winds from disks of rapidly rotating magnetized stars and black holes
50'
Richard V.E. LOVELACE
Cornell University, Ithaca, USA
16:10
16:40
Coffee Break
30'
16:40
17:30
Presentation via video

Dynamics and dissipation in poynting flux dominated flows
50'
Maxim LYUTIKOV
Purdue University, West Lafayette, USA
17:30
17:40
Concluding remarks
10'
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