BLU 2026 - workshop of the Bulgaria – Latvia – Ukraine

Initiative for Space Weather Investigations

June 8-12, 2026

Primorsko, Bulgaria

 

Main topics:

  • Key areas of space weather research at participating organizations
  • Solar flare studies and related phenomena
  • Discussion of ongoing and prospective joint projects
  • Regional, European, and international programs on solar and space weather research and applications
  • Support for Ukraine in restoring its scientific and technical research capacity
  • Organizational and coordination matters

Organisations:

  • Space Research and Technology Institute (SRTI), Sofia, Bulgaria
  • Engineering Research Institute of Ventspils International Radio Astronomy Centre (ERI VIRAC), Ventspils University of Applied Sciences (VUAS), Ventspils, Latvia
  • Institute of Radio Astronomy of the National Academy of Sciences of Ukraine (IRA NASU), Kharkiv, Ukraine
  • Odesa Radio Astronomy Observatory "URAN-4", Institute of Radio Astronomy of the National Academy of Sciences of Ukraine (IRA NASU), Odesa, Ukraine
  • S.I. Subbotin Institute of Geophysics of the National Academy of Sciences of Ukraine (IG NASU), Kyiv, Ukraine
  • Odesa I.I. Mechnikov National University, Faculty of Mathematics, Physics and Information Technologies, Odesa, Ukraine

 

For more information: 

Vladislavs Bezrukovs (VIRAC, Latvia) vladislavsb@venta.lv

Artem Sukharev (VIRAC, Latvia) artem.sukharev@venta.lv

Mikhail Ryabov (IRA NASU, Ukraine) ryabov-uran@ukr.net 

Volodimir Komendant (SRTI, Bulgaria)

 

Project No. lzp-2025/1-0067. Characterisation of Extreme Space Weather Effects on the Ionosphere (IONEX).

Project No. 1.1.1.9/LZP/1/24/048. “Research on Space Weather During Solar Cycle 25 Observed Along the Struve Geodetic Arc”.

PRELIMINARY PROGRAMME

Download program HERE

8 JUNE | 16:00 – 18:00, 15 min for each presentation 

A model of nonisothermal solar corona. Melnik V., Dorovskyy V., Shergelashvili B.
Spectral analysis of a single Type III burst in the extra-wide frequency range of 0.3–19 MHz according to PSP observations. Melnik V., Dorovskyy V.
Radio manifestations of the CME occurred on 21 August 2015. Dorovskyy V., Melnik V., Shevchuk M., Brazhenko A.
Comparative analysis of CME core and coronal plasma parameters using decameter radio spikes. Shevchuk M., Dorovskyy V., Melnik V., Pavlichenko U., Konovalenko A.
Detection of coronal Alfvén waves using radio astronomical methods. Shevchuk M., Bubnov I., Dorovskyy V., Melnik V., Pavlichenko U., Konovalenko A., Yerin S.
The impact of the strong 2003 geomagnetic storm on ionospheric turbulence at mid-latitudes according to URAN-4 radio telescope observations. Lytvynenko O., Shepeliev V.

9 JUNE | 16:00 – 18:00, 15 min for each presentation 

Updates on Solar Observations and Space Weather Research at VIRAC. Bezrukovs V.
Indicators of Local Manifestations of Space Weather Extremes on the Ionosphere in the «Struve Arc Area» Ryabov M., Sukharev A., Orlyuk M., Usoskin I., Bezrukov V., Šteinbergs J., Romenets A., Zabora D. Kashuba V.
Manifestation of strong magnetic storms around the meridian of the Struvé Geodesic Arc. Orlyuk M., Romenets A., Marchenko A.
On the properties of the activity of the 25th solar cycle. Ryabov M., Sukharev A., Komendant V.
Basic properties of the 25th cycle of solar activity using super-resolution wavelet data. Sukharev A., Orlyuk M., Ryabov M., Zabora D., Romenets A., Sumaruk Yu., Kashuba V., Bezrukovs V., Steinbergs J., Orbidans A., Usoskin I., Kero A.

10 JUNE | 16:00 – 18:00, 15 min for each presentation 

Evaluating the performance of SDR receivers for monitoring ionospheric scintillations at RT URAN-4. Derevyahin V., Sukharev A., Ryabov M., Lytvynenko O., Zabora D., Bezrukovs V., Steinbergs J., Orbidans A.
Dynamics of ionospheric scintillations of space radio sources during geomagnetic disturbances observed with the LOFAR (Latvia) and URAN-4 (Ukraine) radio telescopes. Sukharev A., Ryabov M., Bezrukovs V., Steinbergs J., Orbidans A., Derevyahin V., Lytvynenko O., Usoskin I., Zabora D.
The digitization programme of analog recordings of powerful radio sources at RT URAN-4: progress and results. Shymbarova O., Zabora D., Ryabov M., Sukharev A., Dubovenko V.
Long-lasting magnetic storm of 25–30 April 1989 and the state of the ionosphere based on digitized analog observations at RT URAN-4. Zabora D., Shymbarova O., Ryabov M., Sukharev A., Dubovenko V.
Tasks of modernizing the hardware and software complex for radiometric measurements on the URAN-4 radio telescope. Lytvynenko O., Orlov V., Derevyahin V., Yasynskyi V.