III · Rome - Pescara · July 12-24, 1999

Electrodynamics and Magnetohydrodynamics around Black Holes

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July 12 - 24, 1999

The Third ICRANet Workshop Electrodynamics and Magnetohydrodynamics around Black Holes July 12 - 24, 1999 Rome and Pescara, Italy. The recent observations of gamma ray bursts and the physics of active galactic nuclei lead to the need for an assessment of the efficiency of the electromagnetic and rotational energy extraction processes in the field of Kerr and Kerr-Newman black holes. Experts in general relativity, in plasma, pulsar and quasar physics and in astrophysics will interact at this workshop to clarify some of the basic issues which are still unresolved in this important field of research. The Italo-Korean Meeting on Relativistic Astrophysics will take place in parallel with this third ICRA workshop. Invited participants and speakers include: J.Bekenstein (The Hebrew University of Jerusalem, Israel) V.Belinski (Rome University "La Sapienza" and ICRA, Italy) V.S.Beskin (Lebedev Physical Institute, Moscow, Russia) J.Bicak (Charles University, Prague, Czech Republic) D.Bini (CNR of Naples, Italy) M.Camenzind (Heidelberg, Germany) V.M.Chechetkin (Keldysh Institute of A.M., Moscow, Russia) D.Christodoulou (Princeton University, USA) B.Coppi (MIT, USA) F.V.Coroniti (University of California, Los Angeles, USA) T.Damour (IHES, Paris, France) L.Z.Fang (University of Arizona, Tucson, USA) K.Hirotani (Kyoto University, Japan ) R.Jantzen (Villanova University, USA) R.Khanna (Heidelberg, Germany) I.B.Khriplovich (Novosibirsk University, Russia) I. Kotov (MEPHI, Moscow, Russia) D.Meier (JPL, USA) N.Narozhny (MEPHI, Moscow, Russia) Yu.P.Popov (Keldysh Institute of A.M., Moscow, Russia) G.Preparata (Milan University, Italy) B.Punsly (Huges, California, USA) R.Ruffini (Rome University "La Sapienza" and ICRA, Italy) J.Salmonson (Lawrence Livermore National Laboratory, USA) M.Takahashi (Kyoto University, Japan ) L.Titarchuk (NASA Goddard Space Flight Center, USA) A.Tomimatsu (Kyoto University, Japan) A.Treves (Como University, Italy) J.Wilson (Lawrence Livermore National Laboratory, USA) S.-S. Xue (ICRA, Italy) F.J. Zerilli (NAVAL SURF. WARF. CENTER, Washington, USA) The number of participants will be limited to 100. The program, ...

Workshop Schedule

July 12, Monday July 13/ 21, Tuesday, Wednesday July 22, Thursday July 23, Friday Rome from 8.00 a.m. Aula M. Conversi ( 1th floor Department of Physics) Departure to Pescara by coach in the afternoon (Department of Physics) works in Pescara Pescara Return to Rome Rome Close session at Aula E. Amaldi (1th floor Department of Physics) Plenary and short talks Plenary and short talks Plenary and short talks Plenary and short talks

Workshop Program - first week

First Week Second Week 12 Mon 13 Tuesd 14 wed 15 thursd 16 Frid Chairman L.Z. Fang Y.D. Kim Chul Lee S.S. Xue V. Gurzadyan 9.00 R. Ruffini Major and Authorities of Pescara S.K. Chakrabarti I A. Dorodnitsyn I.B. Khriplovich 9.45 F.J. Zerilli L. Titarchuck I S. Kim V. Beskin G. Preparata 10.30 Chul Lee B. Punsly II I. Yi T. Damour 11.15 Coffee Coffee Coffee Coffee Coffee 11.45 B. Punsly I C. Cherubini G. Cruciani S. Cristiani II R. Ruffini 12.30 Lunch Lunch Lunch Lunch Lunch 15.00 A. Treves 16.00 Departure to Pescara 16.30 23.00 Raising Flag Ceremony D.J. Song S.W. Kim B. Punsly III Departure to Pugnochiuso 17.15 J.H. Jun Y. Yang B. Punsly IV 17-18 Tremiti Islands 18.00 S. Cristiani I S.K. Chakrabarti II

Abstracts of The Third ICRA Network Workshop

Ahmedov Bobomurat Institute of Nuclear Physics Uzbekistan Academy of Sciences Ohm's Law for Plasma in General Relativity and Cowling's Antidynamo Theorem in Kerr Space The general-relativistic Ohm's law for a two-component plasma which includes the gravitomagnetic and Coriolis force terms even in the case of quasi-neutrality has been derived. The generation of azimuthal current under the gravitomagnetic and Coriolis effect on radial current in a plasma around neutron star is considered. The azimuthal current can substantially exceed the generating radial current for high temperature plasma and highly spinning neutron star. Thus a rotating neutron star, embedded in plasma, can in principle generate axial-symmetric magnetic fields even in axisymmetry. Asghar Qadir Department of Mathematics Quaid-I-Azam University Belinski Valodia Rome University "La Sapienza" and ICRA, Italy Belousova Irina Astrophysics Institute of MEPhI Spectra of GRBs in the model of optically thick extended shell We suppose that nonthermal spectra of radiation in gamma-ray bursts (GRBs) are formed by optically thick spherical plasma shells that extand with relativistic velocities. The temperature of the shell decreases as power low. We discuss results of calculations which show that radiation spectrum of such shell is similar to observed spectra of GRBs. This model allows to define some characteristics of emitting areas. Bertone Gianfranco ICRA, Italy Physical and Astrophysical Parameters of Relativistic White Dwarfs Beskin Vasily Lebedev Physical Institute,Moscow, RUSSIA On the Grad-Shafranov approach to the black hole magnetosphere The Grad-Shafranov approach to the problem of the structure of the black hole magnetosphere is discussed. Being the most complicated version, this approach contains as well its own intrinsic difficulties.In particular, in general case it is impossible to solve the direct problem (to determine the flow structure from physical boundary conditions) because the position of critical surfaces are unknown. On the other hand, even the number of the boundary conditions can give us very important information e.g. that the angular velocity ...

Dear Participants

Dear Participants Thank you for your participation at the Third ICRA Network Workshop and Sixth Italo-Korean Meeting. I would like to inform you that: The proceedings will be published by Nuovo cimento B in a special volume The editors will be C.Cherubini and R.Ruffini The deadline for proceedings is December 31, 1999 firm ,in order to have the volume well before the MGIX MM Please submit the relevant LateX file (plus relevant postscript figures and images) The file should be submitted to INW3&IKM6@icra.it with the subject: "Proceedings INW3 and IKM6" Please note that: 1. For each plenary talk the manuscripts (included figures and tables) should be in the 20 pages range 2. For the other talks and for the posters the manuscripts (included figures and tables) should be in the 10 pages range 3. The images should be in b/w only 4. The web site containing the instructions for the authors and the latex macros is the following: http://www.sif.it/sif/cimento/guide-en.shtml It is requested also an hard copy of the manuscript. You have to send it at the following address: Prof. Remo Ruffini Dipartimento di Fisica Piazzale A.Moro 2 Roma 00185 Submission of manuscript will not mean that they will automatically be included into the proceedings Certain papers may be send to referees upon the decision of editors Thank you and look forward to your contribution to record this memorable meeting. Greetings Remo Ruffini

Workshop Program - second week

First Week Second Week 19 Mon 20 Tuesd 21 Wed 22 thursd 23 Frid Chairman M. Hafizi S. D. Jong H.K. Lee R. Jantzen L. Halpern 9.00 L. Titarchuck II S.S. Xue J. Salmonson L. Titarchuck III V.M. Tchetchetkine 9.45 J. Bicak M. Camenzind T. Ledvinka M. Takahashi G. Bertone 10.30 S. K. Chakrabarti III L.Z. Fang D. Bini R. Jantzen G. Montani 11.15 Coffee Coffee Coffee Coffee Coffee 11.45 I. Kotov I. Belousova R. Ruffini J. Salmonson K. Hirotani B. Ahmedov 12.30 Lunch Lunch A. Fetodov Lunch L. Halpern 15.00 concluding remarks: R. Jantzen Lunch 16.00 departure to Rome 16.30 H.K. Lee H.M. Lee B.H. Lee 17.15 T. Lee C.H. Lee H.W. Lee 18.00 I. Kotov D. Oriti G. Sonnino

Participants

Ahmedov Bobomurat Institute of Nuclear Physics Uzbekistan Academy of Sciences Ohm's Law for Plasma in General Relativity and Cowling's Antidynamo Theorem in Kerr Space Ab Ahn Eun-Joo Seoul National University Asghar Qadir Belinski Vladimir Rome University "La Sapienza" and ICRA, Italy Belousova Irina Astrophysics Institute of MEPhI Spectra of GRBs in the model of optically thick extended shell Ab Bertone Gianfranco ICRA, Italy Physical and Astrophysical Parameters of Relativistic White Dwarfs Ab Beskin Vasily Lebedev Physical Institute, Moscow, RUSSIA On the Grad-Shafranov approach to the black hole magnetosphere Ab Bicak Jiri Department of Theoretical Physics Faculty of Mathematics and Physics Charles University Praga Black holes in external fields Ab Bini Donato (CNR of Naples, Italy) Circular Orbits in Rotating Black Hole Spacetimes R.Jantzen & D.Bini Ab Bruno Nicola Rossano ICRA Camenzind Max Magnetohydrodynamic Processes near Rapidly Rotating Compact Objects Max Camenzind & Ramon Khanna Ab Chakrabarti Sandip K. S.N. Bose National Centre for Basic Sciences, JD-Block, Sector-III, Salt Lake, CAlcutta-700091 First Talk: Global Inflow-Outflow solution (GIOS) from Shock-Compressed accretion disks around Black Holes Second Talk: Global Solution of Dirac Equations in Kerr Black Hole Geometry Ab Chardonnet Pascal Cherubini Christian ICRA, Italy Introduction to the usage of MapleV for advanced problems in Black Hole Physics Cipriani Piero Istituto Astronomico Roma, Italy Clarelli Fabrizio Coroniti Ferdinand V. University of California, Los Angeles, USA Cristiani Stefano Space Telescope-European Coordinating Facility European Southern Observatory Karl-Schwarzschild- Cruciani Gianluca Dipartimento di Fisica, Universit di Roma "La Sapienza", Italy Damour Thibault IHES, Paris, France Del Giudice Emilio INFN- Milano Dorodnitsyn Anton Institute for Cosmic Research (IKI), Moscow, Russia Using the Galerkin method to calculate stability and collapse of relativistic star Ab Fang Li Zhi University of Arizona, Tucson, USA Fedotov Alexander Department of Theoretical Physics Moscow State Engineering Physical Institute (MEPHI) Quantum Field in Rindler space ...