Publications of the Heliophysical Observatory
    since 2000


  1. GYŐRI, L., BARANYI, T., CSEPURA, G., GERLEI, O., LUDMÁNY, A.: 2000, Debrecen Photoheliographic Data for 1987; with image supplements, Journal of Astronomical Data 6, 1, PDF
  2. BARANYI, T., LUDMÁNY, A.: 2000, Efficiency factors in the solar-tropospheric relations in: W. Schröder ed.: Long and Short Term Variability in Sun's History and Global Change, Interdivisional Commission on History of the IAGA, European Section. Newsletters of the Interd. Comm. History, 39, Science Edition, Bremen, 69-79, PDF
  3. Medovarszki, T., Bencze, P., LUDMÁNY, A.: 2000, Considerations about the ionospheric effects of the 1999 eclipse, Proc. 15. Solar Coelostat Seminar, 2000, Hurbanovo, Slovak Republic, PDF
  4. LUDMÁNY, A.,  BARANYI, T.: 2000, Comparative study of the atmospheric effects driven by irradiance vs. corpuscular radiation, ESA SP-463 (Proc. Euroconference: The Solar Cycle and Terrestrial Climate, Santa Cruz de Tenerife, Spain, Sep. 25-30, 2000), 141-144, html, PDF
  5. TÓTH, L., GERLEI, O.: 2000, Tilt angle variation through the 14th sunspot cycle,  ESA SP-463 (Proc.  Euroconference: The Solar Cycle and Terrestrial Climate, Santa Cruz de Tenerife, Spain, Sep. 25-30, 2000),  439-441.
  6. TÓTH, L., Szegedi, S.: 2000, Relationships between ionospheric disturbances and changes of sea level pressure over the Arctic,  ESA SP-463 (Proc.  Euroconference: The Solar Cycle and Terrestrial Climate, Santa Cruz de Tenerife, Spain, Sep. 25-30, 2000), 529-531.
  7. GYŐRI, L., BARANYI, T., LUDMÁNY, A., GERLEI, O., CSEPURA, G.: 2001, Debrecen Photoheliographic Data for 1988, Publ. Debrecen Obs. Heliogr. Series, 12, 1-60, ftp
  8. BARANYI, T., GYŐRI, L., LUDMÁNY, A., Coffey, H.E.: 2001, Comparison of sunspot area data bases, Monthly Notices of R.A.S., 323(1), 223-230, PDF
  9. BARANYI, T., LUDMÁNY, A.: 2001, Relevance of the topologies of solar ejected plasmas in tropospheric processes, ESA SP-477 (Proc. of the Second Solar Cycle and Space Weather Euroconf., 24 - 29 Sep. 2001, Vico Equense, Italy), 423-426, PDF
  10. Peterova, N.G., Soloviev, A.A., CSEPURA, G.: 2001, On the sudden depression of radio emission from plasma above a fast-moving sunspot, Solar Phys., 201, 137-152.
  11. KÁLMÁN, B.: 2001, Submergence of magnetic flux in interaction of sunspot groups, Astronomy and Astrophysics, 371, 731-737, PDF
  12. van Driel-Gesztelyi, L., Schmieder, B., BARANYI, T.: 2002, Evolution of the source region of the interplanetary magnetic cloud of 18-20 Oct. 1995, Adv. Space Res., 29(10), 1489-1492, PDF
  13. GYŐRI, L., BARANYI, T., Turmon, M., Pap, J.M.: 2002, Comparison of image-processing methods to extract solar features, ESA SP-508 ( Proc. SOHO-11, Davos, 2002), 203-208, PDF
  14. Major, B.,  LUDMÁNY, A.: 2002, Pulsational course of the flare in 19th of July 1999, ESA SP-505 (Proc. of the Magnetic Coupling of the Solar Atmosphere Euroconf. and IAU Coll. 188, 11 - 15 June  2002, Santorini, Greece), 493-495, PDF
  15. KÁLMÁN, B.: 2002, On the outer boundary of the sunspot penumbra, Solar Phys., 209, 109-117, PDF
  16. TÓTH, L., MEZŐ, Gy., GERLEI, O.: 2002, Haynald Observatory Photosphere Observations 1880-1919, JHA, 33, 278, ftp
  17. BARANYI, T., LUDMÁNY, A.: 2002, Geoeffective factors of solar plasma streams, ESA SP-506 (Proc. 10th European Solar Phys. Meet. : Solar variability: from core to outer frontiers , 9 - 14 Sep. 2002, Prague, Czech Republic), 109-113,  PDF
  18. LUDMÁNY, A., Major, B., Nakariakov, V.M.: 2003, Quasi-periodic behaviour of a flare ribbon system, Publ. Astr. Dept. Eötvös Univ. (Proc. NATO Advanced Research Workshop: Turbulence, Waves and Instablities in the Solar Plasma), Budapest, 2002, 139-143, pdf
  19. TÓTH, L., GERLEI, O.: 2003, On the orientational relaxation of bipolar active regions, Publ. Astr. Dept. Eötvös Univ. (Proc. NATO Advanced Research Workshop: Turbulence, Waves and Instablities in the Solar Plasma), 95-100, PDF
  20. TÓTH, L., Szegedi, S.: 2003, Impacts of space weather on sea-level pressure over the auroral oval, Weather, 58, 229-239
  21. MURAKÖZY, J., Vince, I., LUDMÁNY, A.: 2003, Instrumental profile of the Debrecen Solar Spectrograph, Serb. Astron. J., 167, 81 - 85, PDF
  22. BARANYI, T., LUDMÁNY, A.: 2003, Effects of solar polarity reversals on geoeffective plasma streams, J. Geophys. Res., 108, No. A5, 1212, doi:10.1029/2002JA009553,  PDF preprint
  23. GYŐRI, L., BARANYI, T., LUDMÁNY,A.,  MEZŐ, G.: 2003, Current status of the Debrecen Photoheliographic Data, ESA SP-535 (Proc. ISCS 2003: Solar variability as an input to the Earth's environment, June 23-28, 2003, Tatranska Lomnica, Slovak Republic), 707-710, PDF
  24. BARANYI, T., LUDMÁNY,A.: 2003, Semiannual behaviour of monthly mean of Bz component of geoeffective (Kp>3) coronal mass ejections ,  ESA SP-535 (Proc. ISCS 2003: Solar variability as an input to the Earth's environment, June 23-28, 2003, Tatranska Lomnica, Slovak Republic), 563-566, PDF
  25. Szasz,C., Kero, J., BARANYI, T., GYŐRI, L., LUDMÁNY,A., MEZŐ, G.: 2003, An active region quasi-biennial oscillation,  ESA SP-535 (Proc. ISCS 2003: Solar variability as an input to the Earth's environment, June 23-28, 2003, Tatranska Lomnica, Slovak Republic), 153-155, PDF
  26. GYŐRI, L.: 2003, Compiling sunspot catalogue: the princeples, Proc. SIRW Meeting, (Oct. 23-24, 2003, Royal Observatory of Belgium), CD-ROM, PDF
  27. TÓTH,L., GERLEI,O.: 2004, On the dynamic disconnection of rising omega loops, Solar Phys., 220, 43-59
  28. GYŐRI, L., BARANYI, T., Turmon, M., Pap, J.M.: 2004, Study of differences between sunspot area data determined from ground-based and space-borne observations, Adv. Space Res., 34, 269-273,  PDF
  29. GYŐRI, L., BARANYI, T., LUDMÁNY, A., GERLEI, O., CSEPURA, G., MEZŐ, G.: 2004, Debrecen Photoheliographic Data for 1993-95, Publ. Debrecen Obs. Heliogr. Series, 17-19, 1-85, ftp
  30. MEZŐ, G., BARANYI, T., MURAKÖZY, J., GYŐRI, L.: 2004, Statistical study of the East-West asymmetry of sunspots, in: Proc. IAU Symposium No.223 "Multi-Wavelength Investigations of Solar Activity", eds: A. V. Stepanov,  E. E. Benevolenskaya, and A. G. Kosovichev, Cambridge, UK: Cambridge University Press, 285-286, PDF
  31. MEZŐ, G., BARANYI, T., GYŐRI, L.: 2005, Debrecen Photoheliographic Data and its comparison with other sunspot databases, in: Solar Magnetic Phenomena,  (Proc. "Solar Magnetic Phenomena" Summer School and Workshop at the Kanzelhöhe Solar Observatory, 2003), eds.: A. Hanslmeier, A. Veronig and M. Messerotti, Astrophys. Space Sci. Library320, 247-250, PDF
  32. BARANYI, T., LUDMÁNY, A.: 2005, Symmetric or asymmetric energy transfer from Interplanetary Coronal Mass Ejections
    to the magnetosphere depending on the solar dipole,
    Adv. Space Res., 35,  421-425, PDF
  33. MURAKÖZY, J., MEZŐ, G., LUDMÁNY, A., GYŐRI, L.: 2005, Search for possible connections of sunspot features and torsional waves, Hvar Obs. Bull., 29, 31-37, PDF
  34. MEZŐ, G., MURAKÖZY, J., BARANYI, T., GYŐRI, L.: 2005, East-West asymmetry on the solar disk, Hvar Obs. Bull., 29, 99-107, PDF
  35. BARANYI, T., LUDMÁNY, A.: 2005, Geoeffective and climate-influencing solar and interplanetary conditions,  Hvar Obs. Bull., 29, 251-260, PDF
  36. GYŐRI, L. : 2005, Automated determination of the alignment of solar images, Hvar Obs. Bull., 29, 299-308, PDF
  37. Vince, I., Vince, O., LUDMÁNY, A., Andriyenko, O.: 2005, The Mn I 539.47 nm line variation in solar active regions, Solar Physics, 229, 273-285, PDF
  38. GYŐRI, L., BARANYI, T., MURAKÖZY, J., LUDMÁNY, A.: 2005, Recent advances in the Debrecen sunspot catalogues, Mem. S.A.It., 76, 981, PDF
  39. GYŐRI, L., BARANYI, T., MURAKÖZY, J., LUDMÁNY, A.: 2005, Comparison of sunspot area data determined from ground-based and space-borne observation, Mem. S.A.It., 76, 985, PDF
  40. MEZŐ, G., BARANYI, T.: 2005, HTML presentation of the Debrecen Photoheliographic Data sunspot catalogue,  Mem. S.A.It., 76, 1004, PDF
  41. BARANYI, T., LUDMÁNY, A.: 2006, Possible north–south asymmetry related to the mean Bz of interplanetary coronal mass ejections, Adv. Space Res., 38 (Issue 5), 931, PDF
  42. GYŐRI, L., BARANYI, T.: 2006, Comparison of SOHO and Debrecen Photoheliographic Data sunspot areas for the years 1996 and 1997, Proc. SOHO-17: 10 Years of SOHO and Beyond, 7 – 12 May 2006, Giardini Naxos, Sicily (Italy), Edited by H. Lacoste and L. Ouwehand, ESA SP-617, European Space Agency, 2006, Published on CDROM, p.130.1, PDF
  43. MEZŐ, G., BARANYI, T.: 2006, East-West Asymmetry in the sunspot number distribution on the basis of different sunspots catalogues, In: Proceedings of the 4th Workshop of Young Researchers in Astronomy & Astrophysics; Budapest, Hungary, 11-13 January, 2006; Publications of the Astronomy Department of the Eötvös University (PADEU), (Edited by E. Forgács-Dajka), 17, 15, PDF
  44. MURAKÖZY, J., LUDMÁNY, A.: 2006, Connection of sunspot's distribution with the torsional wave, In: Proceedings of the 4th Workshop of Young Researchers in Astronomy & Astrophysics; Budapest, Hungary, 11-13 January, 2006; Publications of the Astronomy Department of the Eötvös University (PADEU), (Edited by E. Forgács-Dajka),  17, 23, PDF
  45. MURAKÖZY, J., LUDMÁNY, A.: 2008, Cycle dependence of the longitudinal-latitudinal sunspot motion correlations, A&A 486, 1003-1007, DOI: 10.1051/0004-6361:20078456, PDF
  46. MURAKÖZY, J., LUDMÁNY, A.: 2008, Temporal Variations of Coriolis-turns in the Photosphere, Cent. Eur. Astrophys. Bull., 32, 133-139, PDF
  47. MURAKÖZY, J., LUDMÁNY, A.: 2010, North-south differences of solar cycles, Cent. Eur. Astrophys. Bull., 34, 99. PDF
  48. GYŐRI, L.: 2010, Precise Determination of the Orientation of the Solar Image, Solar Physics267,  445-461, DOI: 10.1007/s11207-010-9663-8
  49. MURAKÖZY, J., LUDMÁNY, A.: 2011, Considerations on the Spörer-diagram – Torsional Wave Relationship, Cent. Eur. Astrophys. Bull., 35, 45-49. PDF
  50. GYŐRI, L., BARANYI, T., LUDMÁNY, A.: 2011, Photospheric data programs at the Debrecen Observatory, Proceedings of the International Astronomical Union, Vol. 6, Symposium S273, August 2010, 403-407., DOI:10.1017/S174392131101564X, PDF preprint
  51. Lefèvre, L., Clette, F., BARANYI, T.: 2011, In-depth survey of sunspot and active region catalogs, IAU Symp., 273., August 2010, 221-225., DOI:10.1017/S1743921311015286
  52. MURAKÖZY, J., LUDMÁNY, A.: 2011, Correlations of magnetic features and the torsional pattern, IAU Symp., 273, 394-398., DOI:10.1017/S1743921311015626, PDF preprint
  53. Poljančić, I., Brajša, R., Hržina, D., Wöhl, H., Hanslmeier, A., Pötzi, W., BARANYI, T., Özgüç, A., Singh, J., Ruždjak, V.: 2011, Differences in Heliographic Positions and Rotation Velocities of Sunspot Groups from Various Observatories, Cent. Eur. Astrophys. Bull., 35, 59-70, PDF
  54. MURAKÖZY, J., LUDMÁNY, A.: 2011, Phase-lags of solar hemispheric cycles,  MNRAS, 419, 3624-3630., DOI: 10.1111/j.1365-2966.2011.20011.x PDF preprint
  55. BARANYI, T., Pap, J.M.: 2012, Active region properties and irradiance variations,  Advances in Space Research, 50, 676-682, DOI: 10.1016/j.asr.2011.11.037, PDF preprint
  56. GYŐRI, L.: 2012, Study of differences between sunspot and white light facular area data determined from SDO/HMI and SOHO/MDI observations, Solar Physics280,  365-378, DOI: 10.1007/s11207-012-9987-7, PDF preprint
  57. MURAKÖZY, J., BARANYI, T., LUDMÁNY, A.: 2012, Development and morphology of leading-following parts of sunspot groups, Cent. Eur. Astrophys. Bull., 36, 1-8. PDF
  58. GYENGE, N., BARANYI, T., LUDMÁNY, A.: 2012, Distribution of activity at the solar active longitudes between 1979 - 2011 in the northern hemisphere, Cent. Eur. Astrophys. Bull., 36, 9-16. PDF
  59. BARANYI, T., Király, S., Coffey, H. E.: 2013, Indirect comparison of Debrecen and Greenwich daily sums of sunspot areas, MNRAS, 434 (2), 1713-1720, DOI: 10.1093/mnras/stt1134, PDF preprint
  60. GYENGE, N., BARANYI, T., LUDMÁNY, A.: 2013, Variations of solar non-axisymmetric activity, Cent. Eur. Astrophys. Bull., 37, 417-424 PDF preprint
  61. KORSÓS, M. B., BARANYI, T., LUDMÁNY, A.: 2013, Study of sunspot group morphological variations leading to flaring events, Cent. Eur. Astrophys. Bull., 37, 425-434 PDF preprint
  62. GYENGE, N., BARANYI, T., LUDMÁNY, A.: 2014, Migration and extension of solar active longitudinal zones, Solar Phys., 289, 579-591, DOI: 10.1007/s11207-013-0424-3, PDF preprint
  63. MURAKÖZY,J., BARANYI, T., LUDMÁNY, A.: 2014, Sunspot group development in high temporal resolution, Solar Phys., 289, 563-577, DOI: 10.1007/s11207-013-0416-3, PDF preprint
  64. Balázs, L. G., GYENGE, N., KORSÓS, M. B., BARANYI, T., Forgács-Dajka, E., Ballai, I.: 2014, Statistical relationship between the succeeding solar flares detected by the RHESSI satellite, MNRAS, 441, 1157-1165, doi:10.1093/mnras/stu609, PDF preprint
  65. KORSÓS, M. B., BARANYI, T., LUDMÁNY, A.: 2014, Pre-flare dynamics of sunspot groups, ApJ, 789, 107, doi:10.1088/0004-637X/789/2/107 , PDF preprint
  66. BARANYI, T.: 2015, Comparison of Debrecen and Mount Wilson/Kodaikanal sunspot group tilt angles and the Joy's law, MNRAS, 447, (4): 1857-1865, doi:10.1093/mnras/stu2572 , PDF preprint
  67. Wang, Y.-M., Colaninno, R. C., BARANYI, T., Li, J.: 2015, Active-Region Tilt Angles: Magnetic Versus White-Light Determinations of Joy's Law, ApJ, 798, 50, doi:10.1088/0004-637X/798/1/50 , PDF preprint
  68. KORSÓS, M. B., LUDMÁNY, A., ERDÉLYI, R., BARANYI, T.: 2015, On flare predictability based on sunspot group evolution, ApJ, 802, L21, doi:10.1088/2041-8205/802/2/L21 , PDF preprint
  69. KORSÓS, M. B., GYENGE, N., BARANYI, T., LUDMÁNY, A.: 2015, Dynamic Precursors of Flares in Active Region NOAA 10486, JAA, in press, Online First, doi:10.1007/s12036-015-9329-x , PDF preprint
  70. GYENGE, N., Bennett, S., ERDÉLYI, R.: 2015, Non-homogeneous Behaviour of the Spatial Distribution of Macrospicules, JAA, in press, Online First, doi:10.1007/s12036-015-9316-2 , PDF preprint
  71. GYŐRI, L.: 2015, Automation of tracking various sunspot group entities and demonstrating its usage on the flaring NOAA AR 11429, Solar Phys. Online First, DOI:10.1007/s11207-015-0714-z, PDF preprint




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