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Full Name
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Melikidze Giorgi
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| Address | |
| Institute of Astronomy, University of Zielona Gora 2, Lubuska st., 65-265, Zielona Gora, Poland | |
| Phone | |
| +48683283022 | |
| Fax | |
| +48683287360 | |
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E-mail
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| Web Page | |
| http://astro.ia.uz.zgora.pl/~gogi/ | |
| Date Of Birth | |
| 1953-02-07 | |
| Education | |
| 2004 – Title of professor, President of the Republic of Poland. 1996 – Habilitation (Senior doctorate), Abastumani Astrophysical observatory. 1986 – Ph.D. Tbilisi State University, Department of Physics. 1975 – M.S. Tbilisi State University, Department of Physics. | |
| Position | |
| Professor, Institute of Astronomy, University of Zielona Gora | |
| Publications | |
| 1. Melikidze G. I. & Pataraya A. D., Relativistic Langmuir soliton, Bulletin of the Georgian Academy of Sciences, 1978, 90, #1, pp. 49-52 2. Pataraya A. D. & Melikidze G. I., Langmuir soliton in relativistic plasma, In: Proc. All-Union Conference on Interaction of Electromagnetic radiation with plasma, (Dushanbe State University, Tad. SSR) 1979, pp.101-102 3. Melikidze G. I. & Pataraya A. D., Modulational instability of nonlinear waves in the relativistic plasma taking into account nonlinear Landau damping, Astrophys. Space Sci., 1980, 68, pp.49-59 4. Melikidze G. I. & Pataraya A. D., Relativistic Langmuir soliton in the magnetosphere of pulsars, Astrofizika, 1980, 16, pp.161-167 5. Mamradze P. G., Machabeli G. I. & Melikidze G. I., Generation of infrared radiation of pulsar NP0532 by Langmuir solitons, Sov. J. Plasma Phys., 1980 6, #6, pp. 1293-1299. 6. Melikidze G. I., Pataraya A. D., Tsikarishvili E. G. & Chagelishvili G. D., Solitons in the Relativistic Electron-Positron Plasma, In: Proc. XV International Conference Phenomena in Ionazed Gaze, (Minsk, Bel. SSR), 1981, pp. 277-278. 7. Lomadze R. D, Machabeli G. Z., Mamradze P. G. & Melikidze G. I., In: Proc. XV International Conference Phenomena in Ionazed Gaze, (Minsk, Bel. SSR), 1981, pp. 273-274. 8. Melikidze G. I., Pataraya A. D. & Chagelishvili G. D., Solitons of low-frequency electromagnetic waves in the pulsar magnetosphere, In: Proc. All-Union conference of Young Sciences, (Tbilisi State University, Geor.SSR), 1981, pp. 396-397. 9. Lominadze J. G., Melikidze G. I. & Pataraya A. D., Nonlinear waves in the magnetosphere of pulsars, In: Proc. International Conference on plasma physics, (Göteborg), 1982, pp. 440-441. 10. Lominadze J.G., Mamradze P. G., Melikidze G. I. & Pataraya A. D., Nonlinear waves in the relativistic plasma, propagating oblique of magnetic field, In: Proc. III All-Union Conference on Interaction of Electromagnetic radiation with plasma, (Alma-Ata State University, Kaz. SSR), 1982, pp. 130-132. 11. Melikidze G. I. & Pataraya A. D., Langmuir soliton propagated in the relativistic plasma at an angle to the external magnetic field, Astrofizika, 1984, 20, pp. 157-163. 12. Lominadze J. G., Melikidze A. P. & Pataraya A. D., Plasma mechanisms for the pulsar radiation, In: Proc. International Conference on Plasma Physics, (Lausanne, Switzerland), Invited papers, Vol. 2, 1984, pp.1043-1046. 13. Melikidze G. I., Pataraya A. D. & Chagelishvili G. D., Solitons of low-frequency electromagnetic waves in the electron-positron plasma, Bulletin of the Georgian Academy of Sciences, 1984, 114, pp. 289-292. 14. Lominadze J. G., Melikidze G. I., Silin V. P. & Ursov V. N., On the spectrum of longitudinal waves in the hot degenerate plasma, In: Proc. International Summer School and Workshop on Plasma Astrophysics, ed. T.D. Guyenne, volume ESA SP-207, (Paris: European Space Agency), 1984, pp. 101-103. 15. Lominadze J. G., Machabeli G. Z., Melikidze G. I. & Pataraya A. D., Magnetospheric plasma of a pulsar, Sov. J. Plasma Phys., 1986, 12, pp. 712-721. 16. Lominadze J. G., Melikidze G. I., Silin V. P. & Ursov V. N., Longitudinal-wave spectrum in a hot degenerate plasma, Sov.J.Plasma Phys., 1986, 12, pp. 468-473. 17. Kazbegi A. Z., Machabeli G. Z. & Melikidze G. I., The generation of radiowaves in the inhomogeneous magnetic field of the pulsar magnetosphere, Bulletin of the Georgian Academy of Sciences, 1986, 122, pp. 89-92. 18. Kazbegi A. Z., Machabeli G. Z. & Melikidze G. I., Effect of magnetic field inhomogeneity on excitation of longitudinal waves in pulsar magnetosphere, Astrofizika, 1986, 25, pp. 119-124. 19. Kazbegi A. Z., Machabeli G. Z. & Melikidze G. I., The generation of radiowaves in the inhomogeneous magnetic field of the pulsar magnetosphere, In: Proc. International Summer School and Workshop on Plasma Astrophysics, ed. T.D. Guyenne, volume ESA SP-251, Paris: European Space Agency, 1986, pp. 405-410. 20. Kazbegi A. Z., Machabeli G. Z. & Melikidze G. I., Radio emission model of a “typical” Pulsar, Austral.J. Phys., 1987, 40, pp. 755-766. 21. Machabeli G. Z. & Melikidze G. I., On the mechanism and some peculiarities of optical radiation of PSR 0531+21, Sov. Astronomical J., 1988, 65, pp. 741-745. 22. Kazbegi A. Z., Machabeli G. Z. & Melikidze G. I., On the possibility of discovering pulsed high-energy radiation from SN 1987, In: All-Union Seminar on Physics of Neutron Stars, ed. D.A. Varshalovich, Leningrad: PTI, 1988, 1, pp. 94-99. 23. Kazbegi A. Z., Machabeli G. Z. & Melikidze G. I., Generation of waves in pulsar magnetospheres, In: All-Union Seminar on Physics of Neutron Stars, ed. D.A. Varshalovich, Leningrad: PTI, 1988, 2, pp. 138-141. 24. Kazbegi A. Z., Machabeli G. Z., Melikidze G. I. & Usov V. V., On the nature of a `typical’ pulsar radio emission, In: Proc. of the Joint Varenna-Abastumani International School \& Workshop on Plasma Astrophysics, ed. T.D. Guyenne, ESA SP-285, Vol. I, Paris: European Space Agency, 1988, pp. 271-276. 25. Kazbegi A. Z., Machabeli G. Z. & Melikidze G. I., On the mechanism of formation of the polarization characteristics of pulsar radiation, In: Proc. of the Joint Varenna-Abastumani International School & Workshop on Plasma Astrophysics, ed. T.D. Guyenne, ESA SP-285, Vol. I Paris: European Space Agency, 1989, pp. 277-280. 26. Melikidze G. I. & Pataraya A. D., Nonlinear waves in the magnetosphere of pulsars, Symposium Principle of invariance and its applications, Erevan, 1989, pp. 426-430. 27. Kazbegi A. Z., Machabeli G. Z. & Melikidze G. I., On the existence of circular polarization in the pulsar magnetosphere, In: Proc. of the Joint Varenna-Abastumani-ESA-Nagoya-Potsdam Workshop on Plasma Astrophysics, ed. T.D.Guyenne, ESA SP-311, Paris: European Space Agency, 1990, pp. 227-233. 28. Kazbegi A. Z., Machabeli G. Z. & Melikidze G. I., On the possibility of discovering pulsed radiation from SN 1987, In: Proc. of the Joint Varenna-Abastumani-ESA-Nagoya-Potsdam Workshop on Plasma Astrophysics, ed. T.D.Guyenne, ESA SP-311, Paris: European Space Agency, 1990, pp. 297-300. 29. Kazbegi A. Z., Machabeli G. Z. & Melikidze G. I., On the circular polarization in pulsar emission, Mon. Not. R. Astr. Soc., 1991, 253, pp. 377-387. 30. Kazbegi A. Z., Machabeli G. Z. & Melikidze G. I., On the nature of pulsar radiation, In: High-Energy Astrophysics, ed. by W.H.G. Lewin, G.W.Clark and R.A.Sunyaev, National Academy Press, Washington, D.C. 1991, pp. 225-237. 31. Kazbegi A. Z., Machabeli G. Z. & Melikidze G. I., The Nature of Pulsars Subpulse Drift, Aust. J. Phys., 1991, 44, pp. 573-584. 32. Kazbegi A. Z., Machabeli G. Z., Melikidze G. I. & Smirnova T. V., The plasma model of pulsar emission and some of its observational consequences, Astrofizika, 1991, 34, pp. 433-448. 33. Kazbegi A. Z., Machabeli G. Z. & Melikidze G. I., On the pulsar radiation mechanisms, In: The Magnetospheric Structure and Emission Mechanisms of Radio Pulsars, IAU Colloquium No 128, ed. T.H.Hankins, J.M.Rankin and J.A.Gil, Zielona Gora, Poland: Pedagogical Univ. Press, 1992, pp. 232-235. 34. Kazbegi A. Z., Machabeli G. Z. & Melikidze G. I., On the circular polarization in the pulsar emission In: The Magnetospheric Structure and Emission Mechanisms of Radio Pulsars, IAU Colloquium No 128, ed. T.H.Hankins, J.M.Rankin and J.A.Gil, Zielona Gora, Poland: Pedagogical Univ. Press, 1992, pp. 296-298. 35. Kazbegi A. Z., Machabeli G. Z. & Melikidze, G. I., Model for the drifting subpulse phenomenon, In: The Magnetospheric Structure and Emission Mechanisms of Radio Pulsars, IAU Colloquium No 128, ed. T.H.Hankins, J.M.Rankin and J.A.Gil, Zielona Gora, Poland: Pedagogical Univ. Press, 1992, pp. 373-374. 36. Pajot-el Abed Ph., Melikidze G. I. & Tagger M., Magnetic drift driven instability and cosmic ray acceleration, Astron. Astrophys., 1992, 257, pp. L9-L12. 37. Pajot-el Abed Ph., Melikidze G. I. & Tagger M., Magnetic drift driven instability for cosmic ray acceleration: oblique propagation, Astron. Astrophys., 1994, 291, pp. 687-692. 38. Machabeli G. Z., Melikidze G. I & Paverman V. S., Dynamics of the Flute-Instability in Accretion Disks of AGN, Izv.Vuz. Radiofizika, 1996, 39, #1, pp. 34-38. 39. Melikidze G. I. & Khechinashvili D. G., Instabilities in the Magnetosphere of Millisecond Pulsars, Izv. Vuz. Radiofizika, 1996, 39, #2, pp. 58-62. 40. Kazbegi A. Z., Machabeli G. Z., Melikidze G. I. & Shukre C., A Model for Pulsar Nullings, Astron. Astrophys., 1996, 309, pp. 515-520. 41. Khechinashvili D. G. & Melikidze G. I., A model for the binary pulsar radio eclipse, Astron. Astrophys., 1997, 320, pp. L45-L48. 42. Malov I. F, Malofeev V. M., Machabeli G. Z. & Melikidze G.I, On the mechanism of the mode changing in PSR 1822-09, Astronomy Reports, 1997, 41, #2, pp. 262-267. 43. Gil J., Krawczyk A. & Melikidze G., Pulsar radiation, Banach Center Publications, 1997, 41, pp. 239-255 44. Gil J. A., Khechinashvili D. G. & Melikidze G. I., Why is the Geminga pulsar radio quiet at frequencies higher than about 100 MHz?, In: Proc. of the 1997 Pacific RIM Conference on Stellar Astrophysics, ASP Conference Series, 1997, 138, pp. 119-122. 45. Gil J. A., Khechinashvili D. G. & Melikidze G. I., On the radio frequency emission from the Geminga pulsar, MNRAS, 1998, 298, pp. 1207-1211. 46. Asseo E. & Melikidze G., Non-Stationary Pair Plasma in a Pulsar Magnetosphere and the Two-Stream Instability, MNRAS, 1998, 299, pp. 51-65. 47. Gil J. A., Khechinashvili D. G. & Melikidze G. I., Mechanisms of optical emission from the Geminga pulsar, Proceedings of the 19th Texas Symposium on Relativistic Astrophysics and Cosmology, Paris, France, 14-18 December, 1998, CD ROM 11/09. 48. Asseo E., & Melikidze G. I., Sparks, Pair plasma clouds and the two-stream instability in a pulsar magnetosphere” Proceedings of the 19th Texas Symposium on Relativistic Astrophysics and Cosmology, Paris (France) 14 -18 December, 1998, CD ROM 11/01. 49. Khechinashvili D. G., Melikidze G. I. & Gil J. A., Cyclotron resonance as a physical mechanism of the radio eclipses in binary pulsars, 1999, in: Plasma Turbulence and Energetic Particles in Astrophysics, Proceedings of International Conference, Eds.: M. Ostrowski & R. Schlickeiserpp, pp. 367-370. 50. Melikidze G. I., Gil J. A. & Pataraya A. D., Coherent curvature radiation by Langmuir solitons in the pulsar magnetosphere, 1999, in: Plasma Turbulence and Energetic Particles in Astrophysics, Proceedings of International Conference, Eds.: M. Ostrowski & R. Schlickeiser, pp. 381-384. 51. Melikidze G., Gil J. & Pataraya A., A model for the Pulsar Radio Emission, 2000, in: Pulsar Astronomy – 2000 and Beyond, ASP Conference Series, Vol. 202, Eds.: M.Kramer, N.Wex and R.Wielebinski, pp. 397 – 400. 52. Khechinashvili D. G., Melikidze G. I. & Gil J. A., A model for the binary pulsar radio eclipse, 1999, in: Pulsar Astronomy – 2000 and Beyond, ASP Conference Series, Vol. 202, Eds.: M.Kramer, N.Wex and R.Wielebinski, pp. 535-536 53. Gil J. A., Khechinashvili D. G. & Melikidze G. I., On the nature of the Geminga pulsar, 1999, in: Pulsar Astronomy – 2000 and Beyond, ASP Conference Series, Vol. 202, Eds.: M.Kramer, N.Wex and R.Wielebinski, pp. 423-424 54. Khechinashvili D.G., Melikidze G. I. &Gil J. A., Nature of eclipsing pulsars, ApJ, 2000, 541, pp. 335-343 55. Melikidze G. I., Gil J. A. & Pataraya A. D., The spark-associated soliton model for pulsar radio emission, ApJ, 2000, 544, pp. 1081 –1096. 56. Splaver, E. M., Nice, D. J., Lorimer, D. R., Khechinashvili, D. G. and Melikidze, G. I., Probing the Eclipse Region of PSR B1957+20, American Astronomical Society Meeting, 2001, 198, 7505. 57. Gil J. A., Khechinashvili D.G. & Melikidze G. I., On the optical pulsations from the Geminga pulsar, ApJ, 2001, 551, 867. 58. Machabeli G. Z., Khechinashvili D. G., Melikidze G. I. & Shapakidze D. E., Nature of microstructure in pulsar radio emission, MNRAS, 2001, 327, p. 984. 59. Gil J.A., Melikidze G.I. & Mitra D., Modelling of surface magnetic field in neutron stars: application to radio pulsars, A&A, 2002, 388, Iss 6, pp 235-245. 60. Gil J.A., Melikidze G.I. & Mitra D., Vacuum gap model for PSR 0943+10, A&A, 2002, 388, Iss 6, pp 246-251. 61. Gil J.A. & Melikidze G.I., On the Formation of Inner Vacuum Gaps in Radio Pulsars, Astrophysical Journal, 2002, 577, 909-916. 62. Shapakidze D., Melikidze G.I. & Machabeli G., Quasi-linear theory of Cherenkov-drift instability: application to radio pulsars, A&A, 2002, 394, 729-734. 63. Shapakidze D.E., Machabeli G.Z., Melikidze G.I. & Khechinashvili D.G., Extraordinary features of pair plasma and quasi-linear theory of Cherenkov-drift instability, Phys. Rev. E. 2003, 67, 026407. 64. Gil J., Melikidze G. I., Geppert U., Drifting subpulses and inner accelerationregions in radio pulsars, A&A, 2003, 407, 315-324. 65. Gil J., Lyubarsky Y., Melikidze G. I., Curvature Radiation in Pulsar Magnetospheric Plasma, Astrophysical Journal, 2004, 600, 872-882. 66. Mdzinarishvili, T. G.; Melikidze, G. I., Dzigvashvili, R. M., On the Characteristic and Dynamic Ages of Pulsars, Astrophysics, 2004, 47, v. 47, Issue 1, 29-36 . 67. Gil, J.; Melikidze, G. I., On the Giant Nano-subpulses in the Crab Pulsar, Young Neutron Stars and Their Environments, IAU Symposium no. 218, held as part of the IAU General Assembly, 14-17 July, 2003 in Sydney, Australia. Edited by Fernando Camilo and Bryan M. Gaensler. San Francisco, CA: Astronomical Society of the Pacific, 2004, p.321 68. Mdzinarishvili, T. G.; Melikidze, G. I., On the z-distribution of pulsars, A&A, 2004, 425, 1009-1013. 69. Gil, J.; Melikidze, G. I. Angular beaming and giant subpulses in the Crab pulsar, Astronomy and Astrophysics, 2005, 432, 61-65. 70. Melikidze, G.I., Radiative processes in dense magnetized plasma: application to pulsars, Phys. Scr., 2006, T123, 8-13. 71. Gil I., Melikidze G. & Zhang B., Formation of a Partially-Screened Inner Acceleration Region in Radio Pulsars: Drifting Subpulses and Thermal X-Ray Emission from Polar Cap Surface, Astrophysical Journal, 2006, in press. | |
| Conferences,contacts,other scientific and educational activities | |
| 1. Burakan-Abastumani Colloquium, Tbilisi, Gruzja, 1981, zaproszony referat pt. „Langmuir soliton and pulsar radiation”. 2. Soviet-Indian conference on Plasma Astrophysics, Punjab University, Chandigarh, India 1984, zaproszony referat pt. „Modulational instability in the relativistic plasma”. 3. The Joint Varenna-Abastumani International School and Workshop on Plasma Astrophysics, Sukhumi, Gruzja, 1986, zaproszony referat pt. „The generation of radiowaves in the inhomogeneous magnetic field of the pulsar magnetosphere”. 4. All-Union Seminar on Physics of Neutron Stars, Ioffe Physical-Technical Institute, Leningrad, Rosja, 1988, zaproszony referat pt. „Generation of waves in pulsar magnetospheres”. 5. The Joint Varenna International School and Workshop on Plasma Astrophysics, Varenna, Italy, 1988, zaproszony referat pt. „On the nature of a `typical’ pulsar radio emission”. 6. USA-USSR Conference on High-Energy Astrophysics, USSR, 1989, zaproszony referat pt. „On the nature of pulsar radiation”. 7. The Joint Varenna-Abastumeni International School and Workshop on Plasma Astrophysics, Telavi, Gruzja, 1990, zaproszony referat pt. „On the existence of circular polarization in the pulsar magnetosphere”. 8. IAU Colloquium No. 128, Łagów, Polska, 1990, zaproszony referat pt. „On the nature of pulsar radiation”. 9. Cargese Workshop on Collective Acceleration Processes in Collisionless Plasmas, Korsyka, Francja, 1991, zaproszony referat pt. „Accretion disks of AGN”. 10. Volga International Summer School on Space Plasma Physics, Nizhniy Novgorod, Rosja, 1995, zaproszone referaty „Dynamics of the Flute-Instability in Accretion Disks of AGN” i „Magnetosphere of Millisecond Pulsars”. 11. Pacific RIM Conference on Stellar Astrophysics, Hong Kong, 1997, zaproszony referat pt. „Why is the Geminga pulsar radio quiet at frequencies higher than about 100 MHz?” 12. IAU Colloquium 177 “Pulsar Astronomy – 2000 and Beyond”, Bonn, Germany, 1999, zaproszony referat pt. „A model for the Pulsar Radio Emission”. 13. International School and Conference in Plasma Astrophysics, Borjomi, Georgia, 2000, zaproszony referat pt. „The plasma model for the pulsar radio emission”. 14. Autumn College on Plasma Physics ICTP Trieste, Italy, 2001, zaproszony referat pt. „Theory on the pulsar radio emission”. 15. Second International School on Plasma Diagnostics and Technology, Kudowa Zdrój, 2002, zaproszony referat pt. „Dense magnetized plasmas in pulsar magnetosphere”. 16. IAUXXV General Assembly, Sydney 13 – July, 2003 17. Rotation-powered Pulsars and Their Environment, 29 – 30 April, 2004, Max-Planck-Institut für Kernphysik, Saupfercheckweg , Heidelberg. “A model for giant subpulses from the Crab pulsar “ 18. Nijmegen Pulsar Meeting, Nijmegen, Holland, June, 2004. 19. Workshop on Theoretical Plasma Physics 5 – 16 July 2004, ICTP, Trieste. “Coherent curvature radiation in the plasma of the pulsar magnetosphere”. 20. Fourth International Workshop and School “Towards Fusion Energy – Plasma Physics, Diagnostics, Applications” Kudowa Zdroj, Poland, June 7 – 13, 2004. “Some Problems of Modern Cosmology” 21. The 2005 Lake Hanas International Pulsar Symposium, China, August 2-7, 2005. “Drifting subpulse phenomenon in pulsars”, “A model for MP/IP anti-correlation in PSR B1822-09” 22. Fifth International Workshop and Summer School “Towards Fusion Energy – Plasma Physics, Diagnostics, Spin-offs” Kudowa Zdroj, Poland, June 6-10, 2005, “Radiative processes in dense magnetized plasma: application to pulsars” 23. The 363rd Heraeus-Seminar on Neutron Stars and Pulsars (Bad Honnef, Germany, May 14-19, 2006), “A model for unusual pulsed x-ray emission from PSR J1119 – 6127” | |
| Participation in Grant Projects | |
| 1998 – 2005 Georgian Academy of Sciences, 3 research grants. 1996 – 2006 the Polish State Committee for scientific research Grants: 2 P03D 029 26, 2 P03D 008 19, 2 P03D 015 12, 2 P304 003 05, 5 P03D 010 21. 1995 – 2000 INTAS, Grant No. 94-3097 (main investigator),Grant No. 96-0154 (team leader). 1996 – 1998 California Institute of Technology (Pasadena, CA, USA) research project in the frame of CRDF. 1994 – 1996 International Science Foundation, Grant RVI000 (principal investigator). | |
| Languages | |
| Georgian, English, Russian and Polish (fluently). | |
| Scientific interests | |
| Plasma Astrophysics, Neutron Stars, Pulsars, Compact Objects. | |
| Current scientific activities | |
| Radio emission of pulsars. Linear and non-linear theory of relativistic electron-positron plasma. | |
| Future work plans | |
| Thermal x-ray emission from compact objects. | |
| Department | |
| Computational Sciences |