Eigth Italian-Korean Meeting

18 August 2003 - 23 August 2003,
Rome - Pescara, Italy

This seminar is organized to accelerate information interchange between Korean and Italian astrophysicists on new and hot topics on the subject. Especially for this year we want to exchange recent developments on modern astrophysics. Furthermore, this seminar will improve the cultural understanding between two countries. Especially this seminar will remarkably improve the understanding the origin of gamma ray bursts(GRB) and the X-ray astronomy with hot discussions between active young scientists of both countries. Furthermore, the exchange of new ideas about numerical methods for astrophysics will be basis for realistic large scale simulations.

Supporting Institutes

• International Center for Relativistic Astrophysics (ICRA)
• Consiglio Nazionale delle Ricerche (CNR)
• Korea Science and Engineering Foundation (KOSEF

Local Organizing Committee

• Prof. Remo Ruffini (Chairman)
• Hyung Won Lee
• Christian Cherubini
• SheSheng Xue

Monday, 18 August 2003, Sala Convegni

Morning Session, Chair Person : She Sheng Xue

9:00 - 9:40        Opening Address (Prof. Remo Ruffini, ICRA and

Prof. Hyun Kyu Lee, Hanyang University)

9:40 - 10:20      Opening Address (Prof. Remo Ruffini, ICRA and

Prof. Hyun Kyu Lee, Hanyang University)

10:20 - 10:40    Coffee Break

10:40 - 11:20    Prof. Hyung Won Lee (Inje University, ICRA)

Schwarzschild solution with numerical relativity

11:20 - 12:00    - (Istituto Nazionale Ottica Applicata Firenze)

"Strong" chaos, nonequilibrium entropy & microcanonical thermodynamics of Self Gravitating Systems

12:00 - 15:00    Lunch

Afternoon Session, Chair Person : Jongmann Yang (Ewha University)

15:00 - 15:40    Dr. Hee-Il Kim (Sejong University)

Extreme scattering events

15:40 - 16:20    Dr. Gianluca Cruciani (ICRA)

Fermi-Ibanez metric and timelike geodesics

16:20 - 16:40    Coffee Break

16:40 - 17:20    Dr. Donato Bini (CNR)

Gravitoelectromagnetism: applications to the Taub-NUT spacetime

17:20 - 18:00    Dr. Andrea Geralico (ICRA)

Electrostatics on a Reissner-Nordstrom black hole background I

Tuesday, 19 August 2003, Sala Convegni

Morning Session, Chair Person : Sung-Won Kim (Ewha University)

9:00 - 9:40        Prof. Jongmann Yang (Ewha Womans University)

High Energy Experiment with AMS and CREAM I

9:40 - 10:20      Dr. She Sheng Xue (ICRA)

Theory of Dyaodosphere

10:20 - 10:40    Coffee Break

10:40 - 11:20    Dr. Andrea Geralico (ICRA)

Electrostatics on a Reissner-Nordstrom black hole background II

11:20 - 12:00    Dr. Andrea Geralico (ICRA)

Electrostatics on a Reissner-Nordstrom black hole background III

12:00 - 15:00    Lunch

Afternoon Session, Free Time

Wednesday, 20 August 2003, Sala Convegni

Morning Session, Chair Person : Donato Bini (CNR)

9:00 - 9:40        Dr. Carlo Bianco (ICRA)

The GRB 991216 in the EMBH model

9:40 - 10:20      Dr. Cristian Cherubini (ICRA)

Perturbations of Kerr-Taub-Nut spacetime

10:20 - 10:40    Coffee Break

10:40 - 11:20    Dr. Doo Jong Song (Korea Astronomy Observatory)

Distortion of Thermal Sunyaev-Zeldovich Spectrum due to temperature structures of cluster of galaxies

11:20 - 12:00    Dr. Simone Mercuri (ICRA)

Revised quantum geometrodynamics via frame fixing

12:00 - 15:00    Lunch

Afternoon Session, Chair Person : Doo Jong Song (KAO)

15:00 - 15:40    Prof. Sangpyo Kim (Kunsan University)

Dynamical Theory of Nonequilibrium Phase Transitions and Topological Defect Formation in the Early Universe

15:40 - 16:20    Dr. Costantino Sigismondi (ICRA)

Astrometry and Relativity

16:20 - 16:40    Coffee Break

16:40 - 17:20    Prof. Vladmir Belinski (ICRA)

Boundary conditions in the Unruh problem

17:20 - 18:00

Thursday, 21 August 2003, Sala Convegni

Morning Session, Chair Person : Prof. Hyung Won Lee (ICRA)

9:00 - 9:40        Prof. Pascal Chardonnet (University of Savoie)

Ultra High Energy Cosmic Rays : a new frontier

9:40 - 10:20      Dr. Luca Vitagliano (ICRA)

On the General Relativistic Dynamical Formation of the Dyadosphere

10:20 - 10:40    Coffee Break

10:40 - 11:20    Dr. Massimiliano Lattanzi (ICRA)

Effect of neutrino asymmetry on the cosmic microwave background anisotropy spectrum

11:20 - 12:00    Prof. Jongmann Yang (Ewha Womans University)

High Energy Experiment with AMS at Ewha and Kyung Pook in Korea

12:00 - 12:30    Simple Lunch

Afternoon Visit to Museo del'Aquila

14:00 -             Departure to Museo del'Aquila

23:00 -             Arrival in Pescara

Friday, 22 August 2003, Sala Convegni

Morning Session, Chair Person : Prof. Soon-Tae Hong (Ewha University)

9:00 - 9:40        Prof. Sangpyo Kim (Kunsan University)

Remarks on Schwinger Pair Production by EMBH

9:40 - 10:20      Prof. Sungwon Kim (Ewha Womans University)

Gravitational waves from exotic source

10:20 - 11:00    Group Photo and Coffee Break

11:00 - 12:00    Press Conference

12:00 - 15:00    Lunch

Afternoon Session, Chair Person : Prof. Sang Pyo Kim (Kunsan University)

15:00 - 15:40    Dr. Fabrizio Clarelli (ICRA)

Stability region of Neutron Stars and Mass-Radius relation

15:40 - 16:20    Dr. Giovanni Imponente (ICRA)

Generic deSitter Solution with scalar field

16:20 - 16:40    Coffee Break

16:40 - 17:20    Prof. Soon-Tae Hong (Ewha Womans University)

Warped products and the black holes

17:20 - 18:00    Prof. Hyun Kyu Lee (Hanyang University)

Possible gravitational radiation at the center of GRB

Saturday, 23 August 2003, Sala Convegni

Morning Session, Chair Person : Prof. Hyung Won Lee (ICRA)

8:30 -               Departure for Rome

 Surname Name Affiliation Title of talk Abstract Hong Soon-Tae Ewha Womans University Warped products and the Reissner-Nordstrom-AdS black hole We studied a multiply warped product manifold associated with the Reissner-Nordstrom-AdS metric to investigate the physical properties inside black hole event horizons. Our results include various limiting geometries of the RN, Schwarzschild--AdS and Schwarzschild space-times, through the successive truncation procedure of parameters in the original curved space. Kim Sung-Won Ewha Womans University Gravitational perturbation and quasi-normal mode for wormhole Recently the detections of the gravitational waves become one of the important issues. There are some candidates for the gravitational wave sources. As the unknown source that could not be identified by typical interpretations, we propose the waves from the perturbation of the exotic source which consists of exotic matter that violates the known energy conditions. From the results, the wave forms that characterize the sources and radiated energy from the source are found. Kim Sang Pyo Kunsan National University Dynamical Theory of Nonequilibrium Phase Transitions and Topological Defect Formation in the Early Universe We review the current issues of nonequilibrium phase transitions, in particular, in the early Universe. Phse transitions cannot maintain thermal equilibrium and become nonequilibrium when the thermal relaxation time scale is bigger than the dynamical time scale. Such nonequilibrium phase transitions would have happened in certain evolution stages of the early Universe because the rapid expansion quenched matter fields. We discuss the physical implications of nonequilibrium phase transitions in the early Universe. In particular, it is shown that higher order quantum corrections decrease the density of topological defects. Kim Hee-Il ARCSEC, Sejong University Extreme scattering events It is generally believed that extreme scattering events are attributed to the refraction of quasar lights by a AU-sized lens with free electrons but the nature of the lens is still a mystery. We investigate the extreme scattering events with various lens profiles and discuss possible relations with dark matter. Lee Hyun Kyu Hanyang University Gravitational wave from a black hole - torus system at the center of GRB We consider the possible  gravitational wave radiation from a center of GRB,  which consists of a  rotating black hole and a torus.  We propose  gravitational waves  generated by  the precession of the torus.  Using the typical values of black hole mass, mass and radius of torus, one can expect gravitational wave production with frequencies roughly in the range of $10^2$ up to $10^3$ Hz.   In the small wobble angle approximation, the amplitude is found to be not smaller than the  recent estimation for a precessing neutron star. The effect of the back reaction of gravitational radiation as well as the magnetic alignment process  is also  discussed. Lee Hyung Won Inje University Schwarzschild solution with numerical relativity We studied the gauge conditions for initial value problems for numerical general relativity. Song Doo Jong Korea Astronomy Observatory Distortion of Thermal Sunyaev-Zeldovich Spectrum due to temperature structures of cluster of galaxies X-ray observations of some clusters of galaxies offer evidence that temperature maps have shown significance spatial temperature structures. We study the Boltzmann transport equation to calculate how the presence of intracluster medium temperature structures distort the thermal Sunyaev-Zeldovich spectrum. Yang Jongmann Ewha Womans University High Energy Experiments with AMS and CREAM Status of the AMS experiment which is the first high energy experiment on International Space Station and aims to find the signatures of the dark matter as a form of SUSY particle such as photino will be discussed. Also, CREAM experiment which is the most recent ultra high energy cosmic ray experiments on ULDB in 2005 will be discussed. For the CREAM experiment we will describe the current status of the Si sensor charge dector which has been developed, manufactured, and tested in our laboratory.