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Memoirs

Created: 25.6.2017
Updated 6.7.2018
Biography
HRISTOFOR PETROV VANKOV
(20.03.1947 – 22.06.2017)

Born:

H. Vankov was born in Draganovo.

Education:

He graduated physics M. Sc. degree and title engineer in the Saint-Petersburg State Polytechnical University, Russia) His subject was "Physics of Dosimetry and Radiation Protection" (1971)

Vankov defended PhD thesis: "Properties of electron-photon showers at high energies" at the Institute for Nuclear Research and Nuclear Energy of the Bulgarian Academy of Sciences (1983)

Research:

Astrophysics and cosmic ray physics are the fields of his research

He made mathematical models for nuclear particles interactions in the atmosphere

Experience:

Institute of Physics at the Bulgarian Academy of Sciences appointed him as a research scientist (1971 – 1977)

Vankov was Research Associate Professor at the Institute for Nuclear Research and Nuclear Energy (1977 – 1982)
Assistant Professor (second degree), INRNE (1982 – 1988)
Research Associate, Bartol Research Institute, University of Delaware, Newark, Delaware, USA (August 1988 – February 1989)
Assistant Professor (first degree), INRNE (1989 – 1991)

He became associate professor (1991) and professor (2013) in the "Particle physics and astrophysics Laboratory". He made public lecture about "High energy cosmic and gamma rays" Visiting Professor, Saitama University, Saitama, Japan (December 1998 – December 1999)
Visiting Professor, Tohoku Gakuin University, Japan (April 2005 – September 2005)
Vankov was member of counsel of experts on high energy physics and particle astrophysics

H. Vankov finished successfuly some international scientific projects:
Two projects with Bart01 Research Institute, University of Delaware, USA
Two projects with Department of Physics of Saitama University, Japan
One project with Hirosaki University, Hirosaki, Japan

Teaching activity:

H. Vankov lectured two theoretical and practical courses:
1. Laboratory physics, 2 semesters, Sofia University, 1976
2. Cosmic ray physics, 1 semester, Tohoku Gakuin University, Japan, 2005

Publications:

  1. E. Aliu et al. "Observation of Pulsed Gamma-Rays Above 25 GeV From the Crab Pulsar with MAGIC", Science 322 (2008) 1221

  2. E. Aliu et al. "First Bounds on the High-Energy Emission from Isolated Wolf-Rayet Binary Systems", Astrophys. J. Lett. 685 (2008) L71

  3. MAGIC collaboration. "Very high energy gamma rays from a distant Quasar: How transparent is the Universe?' , Science 320 (2008) 1752

  4. J. Albert et al. "Very-High-Energy y-Ray Observations of a Strong Flaring Activity in M 87 in February 2008", Astrophys. J. Lett. 685 (2008) L23.

  5. J. Albert et al. "Multi-wavelength (radio, X-ray and gamma-ray) observations of the gamma-ray binary LS 1 +61 303", Astrophys. J. 684 (2008) 1351

  6. J. Albert et al. "Systematic search for VHE gamma-ray emission from X-ray bright high-frequency BL Lac objects" , Astrophys. J. 681, 944 (2008)

  7. G. Tagliaferri et al. ", Astrophys. J. 679, 1029 (2008)

  8. J.Albert et al. "Upper limit for gamma-ray emission above 140 GeV from the dwarf spheroidal galaxy Draco", Astrophys. J. 679, 428 (2008)

  9. J. Albert et al. "Implementation of the Random Forest Method for the Imaging Atmospheric Cherenkov Telescope MAGIC", Nucl. Instr. Meth. A 588, 424 (2008).

  10. J. Albert et al. "MAGIC Observations of the unidentified Gamma-ray source TeV J2032+4130", Astrophys. J. 675, L25 (2008).

  11. J. Albert et al. "VHE Gamma-Ray Observation of the Crab Nebula and Pulsar with MAGIC", Astrophys. J. 674 (2008) 1037.

  12. MAGIC Collaboration and J. Ellis et al., "Probing quantum gravity using photons from a flare of the active galactic nucleus Markarian 501 observed by the MAGIC telescope", Phys. Lett. B 668 (2008) 253

  13. J. Albert et al. "FADC Signal reconstruction for the MAGIC telescope ", Nucl. Instr. Meth. A 594 (2008) 407

  14. J. Albert et al. "Unfolding of differential energy spectra in the MAGIC experiment", Nucl. Instr. Meth. A 583,494 (2007).

  15. J. Albert et al. "Discovery of Very High Energy gamma-rays from 1 ES 10 I 1 +496 at ~0.212"~ Astrophys. J. Lett. 667, L21 (2007).

  16. J. Albert et al. "Observation of VHE gamma-rays from Cassiopeia A with the MAGIC telescope", Astron. Astrophys. 474, 937 (2007)

  17. J. Albert et al. "Discovery of VHE Gamma Radiation from IC 443 with the MAGIC Telescope", Ap.J Lett. 664 (2007) L87.

  18. J. Albert et al. "Constraints on the steady and pulsed VHE gamma-ray emission from observation of PSR B 195 1+32/CTB 80 with the MAGIC Telescope", Astrophys. J. 669 (2007) 1 143

  19. J. Albert et al. "MAGIC upper limits on high energy emission from GRBs", Astrophys. J. 667 (2007) 358

  20. J. Albert et al. "Variable VHE gamma-ray emission from Markarian 501", Ap.J 669 (2007) 862.

  21. J. Albert et al. "Discovery of Very High Energy Gamma-Ray Emission from the Low- Frequency-peaked BL Lacertae Object BL Lacertae ", Ap.J Lett. 666 (2007) L17.

  22. J. Albert et al. "Very High Energy Gamma-Ray Radiation From The Stellar-Mass Black Hole Cygnus X-1 " , Astrophys. J. Lett. 665 (2007) L5 1

  23. J. Albert et al, "Observations of Mkn 421 with the MAGIC Telescope", Ap.J 663 (2007) 125.

  24. J. Albert et al. "Observation of very high energy gamma rays from the AGN 1ES 2344+514 in a low emission state with the MAGIC telescope ", Ap.J 662 (2007) 892

  25. J. Albert et al. "First bounds on very high energy gamma-ray emission from Arp 220", Ap.J 658 (2007) 245

  26. J. Albert et al. "Detection of VHE radiation from the BL Lac PG 1553+113 with the MAGIC telescope ", Ap.J Letters 654 (2007) L119 - L122

  27. J. Albert et al. "Discovery of very high energy gamma-rays from Markarian 180 triggered by an optical outburst ", Ap.J Letters 648 (2006) L105 - 108

  28. J. Albert et al. "Variable Very High Energy Gamma-ray Emission from the Microquasar LS1+61 303", Science 3 12, 177 1 (2006)

  29. J. Albert et al. "Discovery of VHE gamma-ray emission from lES1218+30.4", ApJ Letters 642, L119 (2006).

  30. J. Albert et al. "Observation of VHE gamma radiation from HESS 51834-087lW41 with the MAGIC telescope ", Ap.J Letters 643, L53 (2006).

  31. J. Albert et al. "MAGIC Observations of very high energy gamma-rays from HESS J1813-178", Ap.J Letters 637, L41 (2006)

  32. J. Albert et al. "Flux upper limit of gamma-ray emission by GRB050713a from MAGIC Telescope observations ", Ap.J Letters 641, L9 (2006)

  33. J. Albert et al. "Observation of Gamma Rays from the Galactic Center with the MAGIC telescope ", Ap.J Letters 638, LlO 1 (2006)

  34. J. Albert et al. "Observation of VHE gamma-ray emission from the Active Galactic Nucleus 1ES1959+650 using the MAGIC telescope", Ap.J 639 (2006) 761-765

  35. A. Misaki, N. Anohina, N. Budnev, S. Nazarov, V. Galkin, M. Higuchi, M. Isiwata, S. Kawaguchi, E. Konishi, S. Kochanov, A. Lagutin, T. Matsuyama, K. Minoura, I. Minorikawa, I. Nakamura, S. Politiko, R. Raikin, N. Takahashi, M. Tamada and H. Vankov. "The design study for the hyper Baikal detector (HBD) in lake Baikal for extremely high energy neutrino astrophysics -strategy and the present purpose". In Proc. 28"' ICRC, Tsukuba, 2003, p. 1361-1 364.

  36. Y. Fukushima, Y. Wada, N. Inoue, H. P. Vankov and EUSO Collaboration. "Simulation studies on air fluorescence and Cherenkov lights from UHE air showers for EUSO experiment". In Proc. 28Ih ICRC, Tsukuba, 2003, p.603-606.

  37. H. Vankov, N. Inoue, K. Shinozaki, E. Konishi, S. Kawaguchi, A. Misaki and M. Kato. "Ultrahigh energy gamma ray cascading in the geomagnetic field and its development in the atmosphere", In Proc. 28Ih ICRC, Tsukuba, 2003, p. 527-530

  38. H. Vankov, T. Stanev, N. Inoue, A. Misaki, S. Kawaguchi and E. Konishi. "LPM showers in the atmosphere taking into account the geomagnetic effect". In Proc. 28Ih ICRC, Tsukuba, 2003, p.523.

  39. H. Vankov, N. Inoue, K. Shinozaki. "Ultrahigh energy gamma rays in the geomagnetic field and atmosphere", Phvs.Rev. D67,043002 (2003).

  40. H. Vankov and T. Stanev. "Lorentz invariance violation and the QED formation length". Phys. Lett. B538 (2002) 251 - 256.

  41. V. Avati et al. "CORAL. A cosmic ray experiment in and above the LHC tunnel". CERNl20001-003, SPSCP321 ,08.01.2001.

  42. N. Inoue, K. Shinozaki, H. Vankov, "Characteristics of gamma-ray air showers around 10~~eV". J. Phys. Soc. Jpn. 70 (2001) Suppl. B. 108-1 13.

  43. N. Inoue, K. Shinozaki, H. Vankov, M. Zha. "A profile of EHE gamma-ray shower and its detection by the Telescope Array". In Proc. 27Ih ICRC, Hamburp HE 1.7 (2001), p.659.

  44. S. Kawaguchi, H. Vankov, M. Kato, E. Konishi, A. Misaki, "Behavior of individual electromagnetic cascade shower with the LPM effect in geomagnetic field". In ~roc.27'~ ICRC, Hamburg , HE 1.5 (2001) p.470.

  45. L. Dedenko, M. Kato, E. Konishi, A. Misaki, S. Polytiko, H. Vankov, Y. Yamada. "Influence of the LPM effect on electromagnetic cascade shower in the atmosphere". GRIPS Res. Report Series 1-99-0005 mat. Grad. Inst. For Policy Studies, Saitama, Japan), Nov. 1999.

  46. N. Inoue, K. Shinozaki, H. Vankov, "Shower development of extremely high-energy cosmic rays". In Proc. of Intern. Workshop " Space Factorv on International Space Station", June 7-9, 1999, Tsukuba Space Center of the NASDA, Ed. T. Ebisuzaki et al, Universal Acad. Press Inc., Tokyo, Japan, p. 123- 130

  47. V. Anguelov and H.P. Vankov. "Electromagnetic showers in a strong magnetic field". J, Phvs. G: Nucl. Part. Phys. 25 (1999) 1755- 1764

  48. T. Stanev and H.P. Vankov. "The nature of the highest energy cosmic rays". Phvs.Rev. D55 (1997) 1365-1371.

  49. F. Halzen, R.A. Vazquez, T. Stanev and H.P. Vankov. "The highest energy cosmic ray". Astrovarticle Physics, 3 (1 995) 15 1-1 56.

  50. V. Anguelov, S. Petrov and H.P. Vankov. "Triplet pair production in electron-photon cascading in a soft photon field". In Proc. 24th ICRC, Rome, 3 (1 995) 790-793.

  51. T. Stanev and H. Vankov. "Hybrid simulations of electromagnetic cascades". Astroparticle Physics 2 (1 994) 35-42.

  52. T. Stanev and H. Vankov. "Electromagnetic cascade simulations using prerecorded shower library". In Proc. 23th ICRC . Calgary, 4 (1993) 167-170.

  53. H. Vankov. "Neutrino astronomy". Physics World (the Journal of Bulg. Phys. Union) 15, No.4 (1 992) 193-204 (in Bulgarian).

  54. T. Stanev and H. Vankov. "Hybrid electromagnetic cascade simulations". In Proc. 22nd ICRC, Dublin, 2 (1 991) HE 2.1.

  55. T. Stanev and H. Vankov. "Air shower detection and the energy flow in electromagnetic cascades". J.Phys. G: Nucl. Part. Phys. 18 (1992) L49-L54.

  56. H. Vankov and P.V. Stavrev. "Electromagnetic cascading of ultra-high energy photons (E > 10'' ev) in the Earth's magnetic field". Phvs.Lett. B266 (1 99 1) 178-

  57. D. Bourilkov, S. Petrov and H. Vankov. "Low-energy threshold calculations of EAS with primary energy 1013 - 10" eV". J.Phvs. G: Nucl. Part. Phys. 17 (199 1) 1925-1 93 1.

  58. F. Halzen, R.J. Protheroe, T. Stanev and H. Vankov. "Isotropic TeV gamma-ray background". In Proc. 21th ICRC. Adelaide, 2 (1990) 399-402

  59. T. Stanev, F. Halzen, H. Vankov, T. Gaisser. "Muon number fluctuations in air showers". In Proc. 21 th ICRC .Adelaide, 9 (1990) 146-149.

  60. F. Halzen, R. Protheroe, T. Stanev, H. Vankov. "Cosmology with 100 TeV gamma-ray telescopes". Phvs. Rev. D41 (1990) 342-346.

  61. T. Stanev, H. Vankov. "Air-shower detection of ultrahigh-energy muons and neutrinos". Phvs.Rev. D40 (1 989) 1472-1476.

  62. T. Stanev and H. Vankov. "Proton generated MeV gamma rays from SN 1987A". Astrophvsical Journal 343 (1989) 828-833.

  63. P. Stavrev, N. Gavritova-Stavreva, H. Vankov, K. Barkalov and V. Yakovlev. "Analysis of the dependence of scintilation detector's time and amplitude characteristics on the box geometry". Bule;. J. Phvs. 16 (1989) 150-158 (in Russian).

  64. Ch.P. Vankov and J.N. Stamenov. "Hadron and muon components in photon showers at 10" eV". In "Genesis and Propagation of Cosmic Rays", Ed. by M. Shapiro and J. Wefel, D. Ride1 Publ. Comp., (1 988) p.255-260.

  65. J. Stamenov, C. Vankov. "Muons in air showers initiated by high energy gamma- rays". In Proc. 20th ICRC, Moscow, 6 (1 987) 35-37.

  66. J.N. Stamenov, Ch.P. Vankov and T. Vodenicharova. "Simulation of gamma-initiated showers". In Proc. 19th ICRC. La Jolla, 7 (1 985) 243-246.

  67. T. Stanev and Ch. Vankov. "Production of high-energy muons in gamma showers". Phvs. Lett. 158B (1985) 75-76.

  68. T. Stanev, Ch. Vankov and F. Halzen. "Muons in gamma showers". In Proc. 19th ICRC, La Jolla, 7 (1 985) 219-222.

  69. T. Stanev and Ch. Vankov. "Electron-photon cascade development in lead". Bulg. J. Phys. 9 (1 982) 129-1 37.

  70. T. Stanev, Ch. Vankov, RE. Streitmatter, R.W. Ellsworth and T. Bowen. "Development of ultrahigh-energy electromagnetic cascades in water and lead including the LPM effect". Phvs.Rev. D25 (1982) 1291-1304.

  71. T. Stanev and Ch. Vankov. "Development of electron-photon cascades in alternate layers of lead and plastic". In Proc. 17th ICCR, Paris, HE 4.1-5 (1 981)(late volume).

  72. T. Stanev, S. Petrov, Ch. Vankov and J.W. Elbert. "Some energy and angular characteristics of electron-photon cascades in air". In Proc. 17th ICCR, Paris, 6 (1 98 1) 256-259.

  73. Ch. Vankov, S. Petrov and T. Stanev. "Fluctuations in the longitudinal development of electron-photon cascades in lead". In Proc. 17th ICCR, Paris, 5 (198 1) 166-169.

  74. A.Ganchev, S. Petrov, T. Stanev and Ch.P. Vankov. "Simulation of electron-photon cascades. 3.: Lateral characteristics in lead in a wide energy interval". Bulg. J. Phys. 8 (1981) 129-138.

  75. T. Stanev and Ch. Vankov. "LPM cascades in lead". In Proc. of Int. Seminar on Cosmic Ray Cascades, Sofia, 1980, Ed. by T.K. Gaisser and T. Stanev, p. 149-1 56.

  76. T. Bowen, R.W. Ellsworth, T. Stanev, R.E. Streitmatter and Ch. Vankov. "LPM bremsstrahlung and pair production probabilities in lead and water". Atomic Data and Nuclear Data Tables, 24 (1 979) 495-508.

  77. T. Stanev and H. Vankov. "The LPM effect and the development of electromagnetic cascades in lead". In Proc. 16th ICCR.Kyoto, 7 (1 979) 47-52.

  78. T. Stanev, Ch. Vankov. "The electron energy flux in electron-photon cascades". In Proc. 16th ICCR, Kyoto, 9 (1 979) 2 10-21 5.

  79. "EMCASR - a set of subroutines for simulation of electron-photon cascades". (Published in Com~.Ph~s.Comm. 16 (1979) 363-372, obtainable from CPC Program Library, Queen's University of Belfast, Catalogue No. AAUV)

  80. S. Petrov, T. Stanev and H. Vankov. "Electron-photon cascades in lead and water at ultrahigh energy". Report at the 6th. European Cosmic Rays Symp., Kiel, 1978 (abstract only published), p.85.

  81. B. Betev, T. Stanev and H. Vankov. "Simulation of heavy fireballs". Report at the 6th. European Cosmic Rays Symp., Kiel, 1978 (abstract only published), p.77.

  82. T. Stanev and Ch. Vankov. "Simulation of electron-photon cascades. 2.: Energy and lateral characteristics in air". Bulg. J. Phys., 5 (1978) 556-562.

  83. T. Stanev and H. Vankov. "Simulation of electron-photon cascades. 1.: Method of simulation and general cascade characteristics". Bulg. J. Phys., 5 (1 978) 433-442.

  84. T. Stanev and Ch. Vankov. "A set of subroutines for simulation of electron-photon cascades". Comp. Phys. Comm., 16 (1 979) 363-372.

  85. B. Markovsky, T. Stanev and Ch. Vankov. "Could the new theoretical ideas of the multiparticle production be useful in the EAS studies". In Proc. 15th ICCR.Plovdiv, 12 (1977) 77-82.

  86. T. Stanev, Ch. Vankov and T. Vodenicharova. "Monte Carlo simulation of the bremsstrahlung and pair production processes taking into account the LPM effect". In Proc. 15th ICCR ,Plovdiv, 7 (1977) 256-261.

  87. T. Stanev, Ch. Vankov and T. Vodenicharova. "Monte Carlo model of the electromagnetic cascade development". In Proc. 15th ICCR. Plovdiv, 12 (1 977) 97- 10 1.

  88. B. Betev, L. Katzarsky, J. Stamenov, T. Stanev, S. Ushev, Ch. Vankov, N.V. Kabanova, N.M. Nesterova, S.I. Nikolsky and V.A. Romakhin. "Fluctuations of muon density of EAS at different distances from the axis". In Proc. 15th ICCR, Plovdiv, 8 (1977) 123-128.

  89. B. Betev, T.Stanev and Ch. Vankov. "Estimation of the parameters of muon density distribution of EAS". In Proc. 15th ICCR. Plovdiv, 8 (1977) 530-535

  90. B. Betev, T. Stanev, Ch. Vankov, N.M. Nesterova and V.A. Romakhin. "Fluctuations of the electromagnetic component of the EAS in the central region". In Proc. 14th ICCR, Munich, 8 (1 975) 2989-2994.

  91. N. Kabanova, I. Kirov, N. Nesterova, V. Romakhin, J. Stamenov, V. Yanminchev, B. Betev, B. Markovski, T. Stanev, S. Ushev, Ch. Vankov. "Investigations of the fluctuations of the muon component of the EAS at mountain altitudes". In Proc. 14th ICCR, Munich, 12 (1975) 4352-

References:

  1. Obituary from INRNE

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