Publications of the Heliophysical Observatory
between 1964 and 1999

  1. DEZSŐ,L. 1964, Statistical investigations of sunspots by a new method Publ. Debrecen Obs. 1, 3-53.
  2. DEZSŐ,L., GERLEI,O. 1964, Relative size of the penumbral and umbral areas of sunspots Publ. Debrecen Obs. 1, 57-80.
  3. DEZSŐ,L., GERLEI,O., SIPOS,V. 1964, A connection between the motion and evolution of bipolar pairs of sunspots Publ. Debrecen Obs. 1, 81-88.
  4. DEZSŐ,L., GERLEI,O. 1964, New facts on the east-west asymmetries of sunspots Publ. Debrecen Obs. 1, 89-108.
  5. DEZSŐ,L., KOVÁCS,Á. 1965, Das Flachenverhaltnis von Penumbra zur Umbra in Sonnenfleckengruppen Bull. Astron. Inst. Czech. 16, No.2., 76-78.
  6. DEZSŐ,L., GERLEI,O. 1965, Variation of the average penumbra-umbra ratio of sunspots during the solar cycle Publ. Astron. Inst. Czech. Acad. Sci. 51, 41-45.
  7. DEZSŐ,L. 1965, An interpretation possibility of the east-west asymmetric distributions of sunspots over the Sun's disk Publ. Astron. Inst. Czech. Acad. Sci. 51, 49-57.
  8. DEZSŐ,L. 1967, Debrecen Heliophysical Observatory (Report from Solar Institute) Sol. Phys. 2, 129-130. PDF
  9. DEZSŐ,L., GERLEI,O., KOVÁCS,Á. 1968, The migration of sunspot activity along solar meridians and parallels In: Stucture and Development os Solar Active Regions (IAU Symp. 35) (ed. K.O.Kiepenheuer), Dordrecht, D.Reidel Publ.Comp., 70-76.
  10. DEZSŐ,L., GYERTYÁNOS,Gy., KÁLMÁN,B., KOVÁCS,Á. 1971, Investigations on the program "Rapid variations of solar magnetic fields", IV., Motions of sunspot umbrae (In Russian), Soln. Dannye, Byull., 1971/7., 77-88.
  11. DEZSŐ,L., GERLEI,O., GYERTYÁNOS,Gy., KÁLMÁN,B., KOVÁCS,Á. 1971, Observations of some characteristic types of sunspot motions, Publ. Debrecen Obs. 2, No.4., 87-113.
  12. Gopasyuk,S.I., KÁLMÁN,B. 1971, On the large-scale velocity field in the solar photosphere (In Russian) Izv. Krymskoj Astrofiz. Obs. 44, 52-63.
  13. DEZSŐ,L., GYERTYÁNOS,Gy., GERLEI,O., KÁLMÁN,B., KOVÁCS,Á. 1972, Proper motions of sunspots from observations carried out simultaneously with measurements on the IK-1 satellite (In Russian) In: Solnechno-zemn. fizika. 3. (ed. E.V.Ivanov), Moskva, 151-163.
  14. DEZSŐ,L., GYERTYÁNOS,Gy., KÁLMÁN,B., KOVÁCS,Á. 1976, Proper motions of the sunspots of groups Nos.50 and 52 of S.D.1975 (In Russian) In: Vozniknovenie i ehvol. aktiv. obl. na Solntse, (ed. V.E.Stepanov et al.), Moskva, Nauka, 48-53.
  15. Bishoff,K., Bumba,V.,Vajnshtejn,L.A., Valnicek,B., GERLEI,O., Gogosheva,Ts., Grineva,Yu., DEZSŐ,L., GYERTYÁNOS,Gy., Zhitnik,I.A., Ivanov,E.V., KÁLMÁN,B., KOVÁCS,Á., Livshits,B., Mandel'shtam,S.L., Martini,L., Mergentaler,Ya., Nestorov,G., Popovich,K., Tindo,I.P., Felske,D., Fisher,Kh., Tifrea,E., Shmelovski, K.G., Stark,B., Jakimiec,J.P. 1976, The study of solar XUV radiation and solar activity (In Russian) In: Po programme "INTERKOSZMOSZ", (ed. G.S.Narimanov), Moskva, Mashinostroenie, 102-129.
  16. Alikaeva,K.V., Akhmedov,Sh.B., Baranovskij,Eh.A., Gel'frejkh,G.B., DEZSŐ,L., GYERTYÁNOS,G., Ioshpa,B.A., Ishkov,V.N., KÁLMÁN,B., Kartashova,L.G., Koval'chuk,M.M., KOVÁCS,Á., Laba,I.S., Olijnyk,P.A.,Orudzhev,Eh.Sh., Mamedov,S.G., Rakhubovskij,A.S., Seidov,A.G., Sikora,J.,Stepanyan,N.N. 1976, The results of active region McMath 13736 study by cooperative KAPG program "The birth of active regions" (In Russian) In: Vozniknovenie i ehvol. aktiv. obl. na Solntse, (ed. V.E.Stepanov at al.), Moskva, Nauka, 21-26.
  17. KÁLMÁN,B. 1976, Magnetic fields and proper motions of sunpots I. (In Russian) Izv. Krymskoj Astrofiz. Obs. 55, 60-69.
  18. KÁLMÁN,B. 1977, Magnetic fields and proper motions of sunspots II., Group No.42O, October 1968 Izv. Krymskoj Astrofiz. Obs. 57, 122-132. (In Russian)
  19. LUDMÁNY,A. 1977, The birth and initial stage of the large sunspot group of August 1972. Publ. Debrecen Obs. 3, 83-91. (In Russian) PDF
  20. GESZTELYI,L. 1977, Umbral proper motions in the large sunspot group of the great flare activity of August 1972 Publ. Debrecen Obs. 3, 93-109.
  21. KOVÁCS,Á. 1977, The development of the sunspot group associated with the white light flare of July 1974 Publ. Debrecen Obs. 3, 207-231.
  22. GUMAN,I. 1977, Equidensitometric pictures of the white-light flare region on July 4, 1974 Publ. Debrecen Obs. 3, 233-237.
  23. KÁLMÁN,B. 1979, Connection between the structure of the sunspot penumbra and the magnetic field vector Izv. Krymskoj Astrofiz. Obs. 60, 114-127. (In Russian)
  24. KÁLMÁN,B. 1979, Evolution of sunspot groups and their magnetic fields Soln. Dannye, Byull. No.1978/12, 69-76. (In Russian)
  25. DEZSŐ,L., GESZTELYI,L., KONDÁS,L., KOVÁCS,Á., ROSTÁS,S. 1980, Motions in the solar atmosphere associated with the white light flare of 11 July 1978, Sol. Phys. 67, 317-338.
  26. DEZSŐ,L. 1980, A note on some results of the Debrecen Observatory Hvar Obs. Bull. 4, No.1. 9-12. PDF
  27. NAGY,I., LUDMÁNY,A. 1980, The birth and development of a regular bipolar sunspot group. Publ. Debrecen Obs. 4, 3-31. PDF
  28. DEZSŐ,L., KÁLMÁN,B., KONDÁS,L. 1981, Two-ribbon flares, observed in the period 5-9 October 1979 In: Solar Maximum Year, 2. (ed. E.I.Mogilevsky et al.), Acad.Sci.USSR, IZMIRAN, Scientific Council for Solar-Terrestrial Physics, Moskva, 97-104, 305-306.
  29. KÁLMÁN,B. 1981, A statistical investigation of the magnetic field vector in two complex sunspot groups Physica Solariterrestris 16, 145-151. (In Russian)
  30. DEZSŐ,L., KOVÁCS,Á. 1981, A note on sunspot group development, spot motions and solar rotation Publ. Debrecen Obs. 4, 35-59.
  31. KOVÁCS,Á., NAGY,I., BUKOVINSZKI,R. 1981, A note on the activity in the SESC region 2470 In: Solar Maximum Year, 2, (ed. E.I.Mogilevsky et al.), Acad.Sci.USSR, IZMIRAN, Scientific Council for Solar-Terrestrial Physics, Moskva, 232-236, 327-328.
  32. DEZSŐ,L. 1982, Debrecen Heliophysical Observatory (Report from a Solar Observatory) Sol. Phys. 79, 195-199. PDF
  33. Martin,S.F., DEZSŐ,L., Antalova,A., Kucera,A., Harvey,K.L. 1983, Emerging magnetic flux, flares and filaments - FBS interval 16-23 June 1980, Adv. Space Res. 2, No.11. 39-51.
  34. DEZSŐ,L., KOVÁCS,Á. 1983, A note on flare loops Publ. Debrecen Obs. 5, 317-322.
  35. BARANYI,T., LUDMÁNY,A. 1983, Synthesis of H-alpha profiles from filter transmission functions Publ. Debrecen Obs. 5, 595-602. PDF
  36. LUDMÁNY,A. 1983, Asymmetry of non-splitting spectral lines in sunspots Publ. Debrecen Obs. 5, 575-579. PDF
  37. NAGY,I. 1983, Sunspot proper motions in the western part of Hale Region 16864 (May 25-29, 1980) Publ. Debrecen Obs. 5, 107-116.
  38. GESZTELYI,L., KONDÁS,L. 1983, The Development of activity in Hale region 17098 (28 August 8 September 1980), Publ. Debrecen Obs. 5, 133-143.
  39. Ishkov,V.N., Markeev,A.K., Fomichev,V.V., Chernov,G.P., Chertok,I.M.,Likin,O.B., Pisarenko,N.F., Valnicek,B., Karlicky,M., Tlamicha,A., Farnik,F., KÁLMÁN,B. 1983, Peculiarities in the development of flare on May 16, 1981 as observed in optical, X-rays and radio waves Publ. Debrecen Obs. 5, 193-206.
  40. KÁLMÁN,B., NAGY,I. 1983, Proper motion in Hale Region 17644 (May 1981) and the May 16 Flare Publ. Debrecen Obs. 5, 207-215.
  41. Gopasyuk,S.I., KÁLMÁN,B., Romanov,V.A. 1983, Changes in the large-scale current systems in the course of the evolution of an active region, Publ. Debrecen Obs. 5, 249-266.
  42. Gopasyuk,S.I., KÁLMÁN,B., Romanov,V.A. 1983, Separation of current structures in solar active regions In: Problemy fiziki solnechnykh vspyshek, Moskva, 66-71. (In Russian)
  43. Gopasyuk,S.I., KÁLMÁN,B., Romanov,V.A. 1983, Evolution of sunspot groups and formation of large-scale current structures in the solar atmosphere (In Russian) In: Problemy fiziki solnechnykh vspyshek, Moskva, 78-81.
  44. Farnik,F., Kaastra,J., KÁLMÁN,B., Karlicky,M., Slottje,C., Valnicek,B. 1983, X-ray, H-alpha and radio observations of the two-ribbon flare of 16 May 1981 Sol. Phys. 89, 355-378.
  45. GESZTELYI,L. 1984, Consecutive homologous flares and their relations to sunspot motions Adv. Space Res. 4, No.7. 19-22.
  46. Martin,S.F., Bentley,R.D., Schadee,A., Antalova,A., Kucera,A., DEZSŐ,L., GESZTELYI,L., Harvey,K.L., Jones,H., Livi,S.H.B, Wang,J. 1984, Relationships of a growing magnetic flux region to flares Adv. Space Res. 4, No.7. 61-70.
  47. DEZSŐ,L., CSEPURA,G., GERLEI,O., KOVÁCS,Á., NAGY,I. 1984, Sunspot motions and magnetic shear as precursor of flares, Adv. Space Res. 4, No.7. 57-60.
  48. KÁLMÁN,B. 1984, Magnetic field structure changes in the vicinity of solar flares Adv. Space Res. 4, No.7. 81-85.
  49. Simon,G., Mein,N., GESZTELYI,L. 1984, Preflare activity of solar prominences Sol. Phys. 93, 325-336.
  50. Ishkov,V.N., Markeev,A.K., Fomichev,V.V., Chernov,G.P., Chertok,I.M.,Likin,O.B., Pisarenko,N.F., Karlicky,M., Tlamicha,A., Farnik,F., Valnicek,B., KÁLMÁN,B. 1985, Analysis of the flare of May 16th, 1981 with a complex space-time structure using optical, X-ray data and radio observationsBull. Astron. Inst. Czech. 36, 81-96.
  51. Gopasyuk,S.I., KÁLMÁN,B., Romanov,V.A. 1985, Evolution of an active region and its large-scale current system Izv. Krymskoj Astrofiz. Obs. 72, 171-183. (In Russian)
  52. GYŐRI,L. 1985, Imaging properties of a photoheliograph with a Lyot-plane shutter Sol. Phys. 99, 365-369.
  53. Gopasyuk,S.I., KÁLMÁN,B., Romanov,V.A. 1985, Dynamics of sunspot motions and evolution of flare sites on the surface of the Sun In: Fizika Solnechnykh Vspyshek, Moskva, 52-61. (In Russian)
  54. GESZTELYI,L., KÁLMÁN,B. 1986, Sunspot proper motions in connection with the white-light flare of 25 April 1984, Adv. Space Res. 6, No.6. 21-24.
  55. KOVÁCS,Á., DEZSŐ,L. 1986, Sunspot motion as precedents of increasing flare activity Adv. Space Res. 6, No.6. 29-32.
  56. DEZSŐ,L., Fludra,A., GERLEI,O., Jakimiec,J., KOVÁCS,Á., Pettauer,T. 1986, On the quasi-homologous limb flares observed on 3 August 1981 Adv. Space Res. 6, No.6. 65-68.
  57. Bumba,V., KÁLMÁN,B., Klvana,M., Suda,J. 1986, Kinematics of the May 1981 flare complex's field decrease (H.R. 17644) Bull. Astron. Inst. Czech. 37, 219-226.
  58. KOVÁCS,Á., DEZSŐ,L. 1986, Sunspot motion in Hale region No.18430 Contrib. Astron. Obs. Skalnate Pleso 15, Part 1, 103-110.
  59. Borovik,A.V., Grigor'ev,V.M., Kargapolova,N.N., Merkulenko,V.E., Nefed'ev,V.P., Osak,B.F., Polyakov,V.I., Selivanov,V.P., Smol'kov,G.Ya., Yazev,S.A., Bulavina,V.I., Delone,A.B., Roshchina,E.M., Yakunina,G.V., Kartashova,G.L., Ogir',M.B., Stepanyan,N.N., Ioshpa,B.A., Starkova,L.I., Kulikova,E.Kh., Kozhevatov,I.E., Alibegov,M.M., Burov,V.A., Leonenko,S.P., Poperchenko,B.A., Bushchueva,T.P., Marchenko,G.P., KÁLMÁN,B., Sattarov,I., Ograpishvili,N.B., Lositskij,V.G., Orudzhev,Eh. 1986, The development of the active region SD No.135. (June 1984) and its relation to the large-scale magnetic fields on the Sun Contrib. Astron. Obs. Skalnate Pleso 15, Part 1, 211-242.
  60. GESZTELYI,L. 1986, Motion of small sunspots in a channel Contrib. Astron. Obs. Skalnate Pleso 15, Part 1, 251-256.
  61. Ruzdjak,V., Vrsnak,B., Hofmann,A., Krivsky,L., Markova,E., KÁLMÁN,B. 1986, Flare occurrence in the complex of activity NOAA/USAF No.4201, May 29 - June 12, 1983 Contrib. Astron. Obs. Skalnate Pleso 15, Part 1, 257-263.
  62. KÁLMÁN,B. 1986, Activity in Hale Region 18474 /July 1982/ Contrib. Astron. Obs. Skalnate Pleso 15, Part 1, 265-272.
  63. KÁLMÁN,B. 1986, Evolution of SESC Region 4520 /June 1984/ : Birth of a backwards-growing sunspot group Contrib. Astron. Obs. Skalnate Pleso 15, Part 2, 655-657.
  64. BARANYI,T. 1986, Study of Solar H-alpha line profiles by means of filtergrams Publ. Debrecen Obs. 6, 25-37. PDF
  65. Jakimiec,M., KOVÁCS,Á. 1986, An analysys of the relationship between X-ray and H-alpha flares Contrib. Astron. Obs. Skalnate Pleso 15, Part 2, 671-672.
  66. Simon,G., GESZTELYI,L., Schmieder,B., Mein,N. 1986, Filament eruption connected to photospheric activity In: Coronal and prominence plasmas (ed. A.I.Poland), NASA Conference Publ. 2442, 229-233.
  67. GESZTELYI,L., Karlicky,M., Farnik,F., GERLEI,O., Valnicek,B. 1986, White-light flare of 26 July 1981. In: The lower atmosphere of solar flares (ed. D.F.Neidig), NSO/Sacramento Peak, Sunspot, New Mexico, 163-177.
  68. Machado,M.E., Avrett,E.H., Falciani,R., Fang,C., GESZTELYI,L., Henoux,J-C., Hiei,E., Neidig,D.F., Rust,D.M., Sotirovski,P., Svestka,Z., Zirin,H. 1986, White light flares and atmospheric modelling /Working group report/ In: The lower atmosphere of solar flares (ed. D.F.Neidig), NSO/Sacramento Peak, Sunspot, New Mexico, 483-488.
  69. Hofmann,A., Rendtel,J., Aurass,H., KÁLMÁN,B. 1987, Flare and filament activation in an unusually distorted field configuration Sol. Phys. 108, 151-167.
  70. LUDMÁNY,A. 1986, Study of spectral line asymmetry in sunspots. Publ. Debrecen Obs. 6, 5-10. PDF
  71. LUDMÁNY,A. 1986, Two-component modelling of sunspot spectral line profiles. Publ. Debrecen Obs. 6, 11-23. PDF
  72. Mouradian,Z., Martres,M.J., Soru-Escaut,I., GESZTELYI,L. 1987, Local rigid rotation and the emergence of active centres, Astron. Astrophys. 183, 129-134.
  73. Bumba,V., GESZTELYI,L. 1987, Rotation of individual background magnetic field components during the formation of the white-light flare region of April 1984 (NOAA 4474) Bull. Astron. Inst. Czech. 38, 351-355.
  74. Raadu,M.A., Schmieder,B., Mein,N., GESZTELYI,L. 1987, Photospheric induced destabilisation and ejection of prominence material Hvar Obs. Bull. 11, 105-108.
  75. DEZSŐ,L., KOVÁCS,Á. 1987, Development of sunspot groups related to the solar differential rotation during the early period of a new solar cycle Publ. Astron. Inst. Czech. Acad. Sci. 66, 81-84.
  76. GESZTELYI,L., Pap,J. 1987, Sunspot groups as tracers of radial differential rotation Publ. Astron. Inst. Czech. Acad. Sci. 66, 77-80.
  77. DEZSŐ,L., GERLEI,O., KOVÁCS,Á. 1987, Photoheliographic results for the year 1977 Publ. Debrecen Obs. Heliogr. Ser. 1, 11-208. Preface and Introduction PDF
  78. DEZSŐ,L. 1987, An account of the Greenwich Photoheliographic Results of 1874-1976 and of Debrecen's first catalogue of 1977 Publ. Debrecen Obs. Heliogr. Ser. 1, 231-242. PDF
  79. KOVÁCS,Á. 1987, A comparison between Greenwich and Debrecen measurements of sunspot positions Publ. Debrecen Obs. Heliogr. Ser. 1, 211-217. PDF
  80. GERLEI,O. 1987, Measurements of sunspot areas using video facilities in Debrecen and comparisons to some published Greenwich data, Publ. Debrecen Obs. Heliogr. Ser. 1, 219-230. PDF
  81. Bumba,V., Hejna,L., GESZTELYI,L. 1987, High flare activity and redistribution of solar global magnetic field Publ. Astron. Inst. Czech. Acad. Sci. 66, 129-131.
  82. CSEPURA,G., NAGY,I. 1987, Proper motions of the NOAA/USAF 3885 and 3886 Regions Publ. Astron. Inst. Czech. Acad. Sci. 66, 157-160.
  83. Oláh,K., GESZTELYI,L. Holl,A. 1987, Starspot proper motion in HK Lac Publ. Astron. Inst. Czech. Acad. Sci. 70, 95-98.
  84. Raadu,M.A., Schmieder,B., Mein,N., GESZTELYI,L. 1988, Photospheric induced destabilisation and ejection of prominence material, Astron. Astrophys. 197, 289-296.
  85. Bumba,V., GESZTELYI, L. 1988, Solar global background field changes accompanying the development of the white-light flare region of April 1984 (NOAA 4474) Bull. Astron. Inst. Czech. 39, 1-7.
  86. Bumba,V., GESZTELYI,L. 1988, Formation of the white-light flare region of April 1984 (NOAA 4474) within the 21st cycle of solar activity, Bull. Astron. Inst. Czech. 39, 86-92.
  87. KOVÁCS,Á., DEZSŐ,L. 1988, A period of low activity in a solar active region (SESC rgn. 2744 during 21-23 October, 1980) In: Solar Maximum Analysis (ed. V.E. Stepanov et al.) Novosibirsk, Nauka, 317-320.
  88. CSEPURA,G., NAGY,I., 1988, Sunspot motions before large flares (Hale Region 18405 during 3-9 June, 1982) In: Solar Maximum Analysis (ed. V.E. Stepanov et al.) Novosibirsk, Nauka, 47-50.
  89. GERLEI,O., Farnik,F., GESZTELYI,L. 1988, Correlation of the time profiles of H-alpha and X-ray integral intensities of solar flares In: Solar Maximum Analysis (ed. V.E. Stepanov et al.) Novosibirsk, Nauka, 10-15.
  90. KÁLMÁN,B., NAGY,I. 1988, Activity and proper motion in HR 18474 (July 1982) In: Solar Maximum Analysis, (ed. V.E. Stepanov et al.) Novosibirsk, Nauka, 38-42.
  91. Ishkov,V.N., KÁLMÁN,B. 1988, Flare Development and Magnetic Fields In: Solar Maximum Analysis (ed. V.E. Stepanov et al.) Novosibirsk, Nauka, 43-46.
  92. Hofmann,A., Rendtel,J., KÁLMÁN,B. 1988, Features of the vector magnetic field and dynamic chromospheric activity, In: Solar Maximum Analysis (ed. V.E. Stepanov et al.) Novosibirsk, Nauka, 263-266.
  93. GYŐRI,L. 1989, On the determination of the north direction of the Sun's image Sol. Phys. 120, 421-430.
  94. Ishkov,V.N., KÁLMÁN,B. 1989, Active region NOAA 4771/72 (July 1985): Complex morphology, little activity, interplanetary protons In: Solar Magnetic Fields and Corona (ed. R.B. Teplitskaya), Novosibirsk, Nauka, 150-155.
  95. KOVÁCS,Á., DEZSŐ,L. 1990, An analysis of surges triggered by a small flare (Extended Abstract) In: Dynamics of Quiescent Prominences (eds. V.Ruzdjak, E.Tandberg-Hanssen), Lecture Notes in Physics,363 Berlin, Springer-Verlag, 261.
  96. KOVÁCS,Á., DEZSŐ,L. 1990, An analysis of surges triggered by a small flare Sol. Phys. 129, 313-324.
  97. Jakimiec,M., KOVÁCS,Á. 1990, Problem of short-term prediction of solar flare activity, V. Spatial consistence between hard X-ray enhancement and strong X-ray appearance Acta Astron. 40, 305-311.
  98. BARANYI,T., LUDMÁNY,A. 1990, Orientations of new sunspot groups. Publ. Debrecen Obs. 7, 114-115. PDF
  99. GYŐRI,L. 1990, Derivations of the parameters necessary to determine the north direction of a heliogram Publ. Debrecen Obs. 7, 60-61. PDF
  100. Hofmann,A., KÁLMÁN,B. 1990, Currents and energy build-up in a flaring curled field configuration Publ. Debrecen Obs. 7, 112-113.
  101. Aboudarham,J., Henoux,J.C., Brown,J.C., van den Oord,G.H.J., VAN DRIEL-GESZTELYI,L., GERLEI,O. 1990, Effect of Electron Beams During Solar Flares Sol. Phys. 130, 243-251.
  102. Henoux,J.C., Aboudarham,J., Brown,J.C.,van den Oord,G.H.J., VAN DRIEL-GESZTELYI,L., GERLEI,O. 1990, Black and White Flares ? Astron. Astrophys. 233, 577-582.
  103. VAN DRIEL-GESZTELYI,L., Brown,J.C., Henoux,J.C., Aboudarham,J., van den Oord,G.H.J., GERLEI,O., Farnik,F. 1990, Negative Flares on the Sun Publ. Debrecen Obs. 7, 202-203. PDF
  104. CSEPURA,G., NAGY,I. 1990, Proper Motions in Hale Regions 18405 and 18511 (2-14 June, 4-16 August 1982) Publ. Debrecen Obs. 7, 58-59. PDF
  105. CSEPURA,G.,VAN DRIEL-GESZTELYI,L., NAGY,I., GERLEI,O., Schmieder,B., Rayrole,J. 1990, Interaction between bipolar sunspot groups, Publ. Debrecen Obs. 7, 88-91. PDF
  106. Alvensleben,A.V., Casas,R., CSEPURA,G., Lustig,G., Otruba,W., Schroll,A., Vazquez,M., Wittmann,A.D., Wohl,W. 1990, Comparison of heliographic sunspot coordinates observed with seven different solar telescopes Astronomishe Gesellschaft Abstract 5, 43.
  107. Trevisan,R.H., Sawant,H.S., KÁLMÁN,B., GESZTELYI,L. 1990, Homologous and homologous-like microwave solar radio bursts, Rev. Mexicana Astron. Astrofis. 21, 557-561.
  108. VAN DRIEL-GESZTELYI,L., Petrovay,K. 1990, Asymmetric flux loops in active regions I. Sol Phys. 126, 285-298.
  109. Petrovay,K., Brown.,J.C., VAN DRIEL-GESZTELYI,L., Fletcher,L., Marik,M., Stewart,G. 1990, Asymmetric flux loops in active regions II. Sol Phys. 127, 51-64.
  110. Hofmann,A., KÁLMÁN,B. 1991, Electric currents and free energy in a flaring twisted field configuration (NOAA 4263), Astron. Astrophys. 241, 203-208.
  111. KÁLMÁN,B. 1991, Vector magnetic field measurements and penumbral structure Sol. Phys. 135, 299-317.
  112. Schmieder,B., VAN DRIEL-GESZTELYI,L., Henoux,J.C., Simnett,G.M. 1991, Flares and filament due to the interaction between two active regions Adv. Space Res. 11(5), 95-98.
  113. Schmieder,B., VAN DRIEL-GESZTELYI,L., Henoux,J.C., Simnett,G.M. 1991, Conditions for flare and filament formation in interacting solar active regions Astron. Astrophys. 244, 533-543.
  114. VAN DRIEL-GESZTELYI,L., Schmieder,B., Henoux,J.C., Simnett,G.M. 1991, Flare activity and filament formations in two related sunspot groups In: Proc. Flare 22 Workshop "Dynamics of Solar Flares" eds. Schmieder,B. Priest,E. Obs. de Paris, DASOP, 27-28.
  115. BARANYI,T., LUDMÁNY, A. 1992, Study of possible subsurface influences on the emerging active regions Sol. Phys. 139, 247-254. PDF
  116. GYŐRI,L., GERLEI,O., CSEPURA,G. 1992, On the experimental determination of north direction of a heliogram Sol. Phys. 140, 199-202.
  117. BARANYI,T., LUDMÁNY,A. 1992, Semiannual fluctuation and efficiency factors in sun-weather relations J. Geophys. Res. 97, No.A10, 14923-14928. PDF
  118. KÁLMÁN,B. 1992, Konkoly Thege's researches in solar physics Konkoly Observatory Monographs 1., 26-29.
  119. van Driel-Gesztelyi,L., CSEPURA,G., NAGY,I., GERLEI,O., Schmieder,B., Rayrole,J., Demoulin,P. 1993, Common evolution of adjacent sunspot groups Sol. Phys. 145, 77-94.
  120. Demoulin,P., van Driel-Gesztelyi,L., Schmieder,B., Henoux,J.C., CSEPURA,G., Hagyard,M.J. 1993, Evidence for magnetic reconnection in solar flares Astron. Astrophys. 271, 292-307.
  121. BARANYI,T., LUDMÁNY, A. 1993, Detection possibility of the giant rolls in the Sun, ASP Conference Series 40, 81-83. PDF
  122. Schmieder,B., van Driel-Gesztelyi,L., GERLEI,O., Simnett,G.M. 1993, A study of surges and flares within an active region, Sol. Phys. 146, 163-176.
  123. Schmieder,B., Demoulin, P., Hagyard,M., Machado,M.E., Ai, G., Yhang,H., Fu,Q., Li,Y., Luan,T., KÁLMÁN,B., GYŐRI,L. 1993, Relationship between magnetic field evolution and flaring sites in AR 6659 in June 1991 Adv. Space Res. 13(9), 123-126.
  124. Bumba,V., Klvana,M., KÁLMÁN,B., GYŐRI,L. 1993, Evolution, activity, magnetic fields, line-of-sight and proper motions in the solar active region NOAA 6659 (June 3-16, 1991) Astron. Astrophys. 276, 193-210.
  125. GYŐRI,L. 1993, Determination of atmospheric refraction from the distortion of the Sun's disc Astron. Astrophys. 278, 659-664.
  126. Bumba,V., Klvana,M., KÁLMÁN,B., GYŐRI,L. 1993, Line-of-sight and proper motions in the flaring June 1991 (NOAA 6659) active region, ASP Conference Series 46, 373-376.
  127. Schmieder,B., Hagyard,M.J., Ai,G., Yhang,H., KÁLMÁN,B., GYŐRI,L., Rompolt,B., Demoulin,P., Machado,M.E. 1994, Relationship between magnetic field evolution and flaring sites in AR 6659 in June 1991 Sol. Phys. 150, 199-219.
  128. BARANYI,T., LUDMÁNY,A. 1994, Distinction between the climatic effects of the solar corpuscular and electromagnetic radiation, Sol. Phys. 152, 297-302. PDF
  129. van Driel-Gesztelyi,L., Demoulin,P., Schmieder,B., Hofmann, A., CSEPURA,G. 1994, Twisted flux tubes and sunspot motions in AR 5555 in: Advances in Solar Physics (Proc. of 7th European Solar Meeting) eds: G. Belvedere, M. Rodono, B. Schmieder, G.M. Simnett, Catania Astrophys. Obs. Special Publ., 115-118.
  130. van Driel-Gesztelyi,L., Hofmann,A., Demoulin,P., Schmieder,B., CSEPURA,G. 1994, Relationship between electric currents, photospheric motions, chromospheric activity, and magnetic field topologySol. Phys. 149, 309-330.
  131. DEZSŐ,L., KOVÁCS,Á. 1994, An account of sunspot group developments on the basis of the "Debrecen Photoheliographic Results" in: Solar Magnetic Fields, eds: M. Schussler, W. Schmidt, Cambridge University Press, 55-57.
  132. DEZSŐ,L., KOVÁCS,Á. 1994, On the differential rotation of the solar photosphere (Extended Abstract) in: Joint Organization for Solar Observations Annual Report 1993 ed. A.v. Alvensleben, Kiepenhauer Institute, Freiburg, 136.
  133. DEZSŐ,L., KOVÁCS,Á. 1994, On the differential rotation of the solar photosphere Sol. Phys. 151, 385-388.
  134. Bumba,V., Klvana,M., KÁLMÁN,B. 1995, NOAA 6850: an inactive delta-configuration and its magnetic and velocity fields, Astron. Astrophys. Suppl. Ser. 109, 355-373.
  135. Fontenla,J.M., Ambastha,A., KÁLMÁN,B., CSEPURA,G. 1995, The magnetic evolutionof AR 6555 which led to two impulsive, relatively compact, X-type flares Astrophys. J. 440, 894-906.
  136. BARANYI,T., LUDMÁNY,A.1995, Role of the solar main magnetic dipole field in the solar-tropospheric relations. Part I. Semiannual fluctuations in Europe, Annales Geophysicae 13, 427-436. PDF
  137. BARANYI,T., LUDMÁNY,A.1995, Role of the solar main magnetic dipole field in the solar-tropospheric relations. Part II. Dependence on the types of solar sources, Annales Geophysicae 13, 886-892. PDF
  138. CSEPURA,G., GYŐRI,L. 1995, Connection between sunspot proper motion and flare frequency Publ. Obs. Astron. Belgrade 49, 115-119.
  139. CSEPURA,G., GYŐRI,L., GERLEI,O. 1995, Sunspot proper motion in two nearby active regions Publ. Obs. Astron. Belgrade 49, 121-125.
  140. BARANYI,T., LUDMÁNY,A. 1995 Giant convective rolls and sunspot group tilts, Publ. Obs. Astron. Belgrade 49, 81-88. PDF
  141. BARANYI,T., LUDMÁNY,A., Terdik,Gy. 1995, Semiannual fluctuation depending on the polarity of the solar main magnetic dipole field Journal of Geophysical Research 100, No. A8, 14801-14805. PDF
  142. CSEPURA,G., GYŐRI,L., Galal,A.A. 1995, Sunspot proper motion and flare frequency in: Flares and Flashes (Proc. of IAU Coll. No. 151) eds: J. Greiner, H.W. Duerbeck, R.E. Gershberg, Lecture Notes in Physics, Springer Berlin Heidelberg, 45-46.
  143. Bumba,V., Klvana,M., KÁLMÁN,B., Garcia,A. 1995, Have solar active complexes stellar analogues?(in Czech) in: Lukac,B. (ed.) Proc. of the Czech-Slovak Meeting on Solar Physics, Hurbanovo, 21.
  144. Bumba,V., Klvana,M., KÁLMÁN,B. 1996, The role of magnetic and motion field singularities in the development of active regions and their flaring activities. in: JOSO Annual Report 1995, 143.
  145. GYŐRI,L., BARANYI,T., CSEPURA,G., GERLEI,O. LUDMÁNY,A. 1996, Debrecen Photoheliographic Data for the year 1986 Publ. Debrecen Obs. Heliogr. Ser. 10, 1-61.
  146. Bumba,V., Klvana,M., KÁLMÁN,B., Garcia,A. 1996, The 1991 southern hemisphere complex of activity Astron. Astrophys. Suppl. Ser. 117, 291-301.
  147. Bumba,V., Klvana,M., KÁLMÁN,B. 1996, Doppler and proper motions accompanying formation of an additional magnetic flux in the mature solar active region (NOAA 7216) Astron. Astrophys. Suppl. Ser. 118, 35-46.
  148. BARANYI,T., LUDMÁNY,A. 1996, Some particle effects in the solar-terrestrial relations. in: Solar Drivers of Interplanetary and Terrestrial Disturbances (Proc. of XVIth Int.Workshop, NSO/Sac.Peak) eds.K.S. Balasubramaniam, S.L.Keil and R.N.Smartt, ASP Conference Series 95, 489-496. PDF
  149. BARANYI,T., LUDMÁNY,A. 1997, Some polarity conditions in corpuscular events. Sol. Phys. 173, 383-389. PDF
  150. van Driel-Gesztelyi,L., CSEPURA,G., Schmieder,B., Malherbe,J.-M., Metcalf,T. 1997, Evolution of a delta-group in the photosphere and corona, Sol. Phys. 172, 151-160.
  151. Peterova,N.G., Szolovjev,A.A., CSEPURA,G. 1997, Why has not been heated up the solar corona over a rapidly moving sunspot? (In Russian) in: Problemi Szovremennoj Radioasztronomii, Tom 2, (Proc. XXVII. Radioasztronomicseszkaja Konferencia 10-14 Nojabrja 1997 g) Ruszszkaja Akademija Nauk, Szankt-Peterburg, 36-37.
  152. Klein,K-L., Aurass,H., Soru-Escaut,I., KÁLMÁN,B. 1997, Electron acceletation sites in a large-scale coronal structure, Astron. Astrophys. 320, 612-619.
  153. KÁLMÁN,B. 1997, Flow patterns around old spots and flare activity Astron. Astrophys. 327, 779-785.
  154. Gaizauskas,V., Zirker,J.B., Sweetland,C., KOVÁCS,Á. 1997, Formation of a solar filament channel Astrophys. J. 479, 448-457.
  155. DEZSŐ,L., KOVÁCS,Á. 1997, Sunspot motion and flare occurences in: The Earth and the Universe, G. Asteriadis et al. (eds.), Aristotle University of Thessaloniki, Thessaloniki: Ziti Editions, 3-9.
  156. GYŐRI,L., BARANYI,T., CSEPURA,G., GERLEI,O., LUDMÁNY,A. 1998, Debrecen Photoheliographic Data for the year 1987 Publ. Debrecen Obs. Heliogr. Ser. 11, 1-45.
  157. BARANYI,T., LUDMÁNY,A., Coffey,H. 1998, 22 year solar modulation of Earth's northern hemisphere temperatures, Geophys. Res. Lett. 25, 2269-2272., PDF
  158. GYŐRI,L. 1998, Automation of area measurement of sunspots Solar Phys. 180, 109-130.
  159. van Driel-Gesztelyi,L., BARANYI,T. Mein,N., Cader-Sroka,B., Rudawy,P., Mein,P., Rompolt,B., Schmieder,B., Malherbe,J.-M., Willson,R., Kile,J.N., Raoult,A. 1998, Evolution of a reversed polarity active region in the photosphere, the chromosphere and the corona JOSO Annual Report 1997, 103-104. PDF
  160. LUDMÁNY,A., BARANYI,T. 1998, An indirect hint to the torsion of magnetic fields above active regions JOSO Annual Report 1997, 88-89. PDF
  161. Bumba,V., Klvana,M., KÁLMÁN,B., Rompolt,B., Rudawy,P. 1998, Chromospheric activity above changing photospheric magnetic and velocity fields of developing active regions in: Three-Dimensional Structure of Solar Active Regions (Proc. of 2nd Adv. in Solar Physics Euroconference) eds. C.E. Alessandrakis and B. Schmieder ASP Conference Series 155, 224-228.
  162. DEZSŐ,L., KOVÁCS,Á. 1998, Sunspot motion and flare occurences in: Publ. of the Astron. Inst. of the Acad. of Sciences of the Czeh Republic No. 88. (Proc. XIVth Consultation on Solar Physics), B. Rompolt et al. (eds.), 17-20.
  163. KÁLMÁN,B. 1998, Solar magnetic fields: models and observations APH N.S., Heavy Ion Physics 8, 247-258.
  164. GYŐRI,L., BARANYI,T., CSEPURA,G., GERLEI,O., LUDMÁNY,A. 1998, Debrecen Photoheliographic Data for 1986; with image supplements Journal of Astronomical Data 4, 2 (ftp: fenyi.solarobs.unideb.hu/pub/DPD/DPD1986.dat)
  165. Babin,A.N., Baranovskij,Eh.,A., Koval,A.N., KÁLMÁN,B., GERLEI,O., 1998, The white-light flare of june 1991: observations and model calculations. Kinematics Phys.Celest.Bodies, 14, pp.253-261.
  166. LUDMÁNY,A., BARANYI,T., MEZŐ,G., 1999, Study of the fragmentation of solar active regions JOSO Annual Report 1998, . PDF
  167. BARANYI,T., LUDMÁNY,A., GYŐRI,L., Coffey,H.E. Comparison of three sunspot area databases  ESA-SP 448, (9th European Meeting on Solar Physics, Florence, Italy, 1999) 569-573. PDF
  168. LUDMÁNY,A., BARANYI,T., MEZŐ,G., TÓTH,L. Clusters in solar active regions  ESA-SP 448, (9th European Meeting on Solar Physics, Florence, Italy, 1999) 613-615. PDF
  169. Lozitsky,V.G., Lozitska,N.I., Lozitsky,V.,V.,BARANYI,T., LUDMÁNY,A., MEZŐ,G. Evolution of magnetic fields and chromospheric structures in solar flare on June 26, 1981 ESA-SP 448, (9th European Meeting on Solar Physics, Florence, Italy, 1999) 853-858. PDF

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