Programme


Invited Talk [IT]: 30 mins including questions
Contributed Talk [CT]: 20 mins including questions

All times are in Armenia Standard Time (UTC+4)




Sunday, 04 May 2025
Arrival of Georgian participants
18:00-19:00 Dinner


Monday, 05 May 2025
09:15-09:45 Breakfast
09:30-10:00 Registration
Session 1: General. Sun and Solar System. Chair: Areg Mickaelian (BAO, Armenia)
10:00-10:20 Opening Ceremony
10:20-10:50 Areg Mickaelian (BAO, Armenia) [IT]: Recent activities of the IAU South West and Central Asian Regional Office of Astronomy for Development
11:50-11:20    Coffee/tea break
11:20-11:50 Pedro Russo, Kateryna Frantseva (Leiden University, Netherlands) [IT]: Astronomy & Society: Perspectives on Education, Communication and Development
11:50-12:20 Tengiz Mdzinarishvili, B. Chargeishvili, D. Japaridze (AbAO, Georgia) [IT]: Analysis of Abastumani data reveals cyclical patterns in the Sun's differential rotation
12:20-12:50 Giorgi Javakhishvilili (AbAO, Georgia) [IT]: The Three-Body Problem and the Earth's NonKeplerian Orbit
12:50-13:10 Vova Aivazian (AbAO, Georgia) [CT]: Observation of Near-Earth Asteroids at the Abastumani Astrophysical Observatory
13:10-13:30 Natia Tsabadze, T. V. Zaqarashvili, G. Ramishvili (AbAO, Georgia) [CT]: Multi-period variations in solar cycles 23-24
13:30-14:30 Lunch break
Session 2: Stars and Nebulae. Chair: Tengiz Mdzinarishvili (AbAO, Georgia)
14:30-15:00 Teimuraz Kvernadze, Otar Kvaratskhelia, K. Chargeishvili, G. Kurkhuli, G. Kapanadze, V. Kozlov (AbAO, Georgia) [IT]: Some of Extreme Binary Systems among the Hot B Stars
15:00-15:20 Tigran Movsessian (BAO, Armenia) [CT]: Proper motion of spectrally separated structures in Herbig-Haro jets
15:20-15:40 Ararat Yeghikyan (BAO, Armenia) [CT]: Ices in Supernovae Remnants
15:40-16:00 Derenik Andreasyan (BAO, Armenia) [CT]: Investigation of the young stellar population in G25.65+1.05 UCHII region
16:00-16:10 Colloquium Group Photo
16:10-16:30    Coffee/tea break
16:30-17:30 Excursion in BAO: Viktor Ambartsumian House Museum and 1m Schmidt telescope
17:30-18:00 Transfer from Byurakan to Voskevaz
18:00-18:40 Voskevaz Winery Tour
19:00-21:00 Welcome Dinner with Concert


Tuesday, 06 May 2025
09:30-10:00 Breakfast
Session 3: Stars and Nebulae. Chair: Alexander Tevzadze (AbAO, Georgia)
10:00-10:20 Ruben Andreasyan (BAO, Armenia) [CT]: The Galactic distribution of pulsars
10:20-10:40 Givi Kapanadze, Teimuraz Kvernadze, Otar Kvaratskhelia (AbAO, Georgia) [CT]: MachineLearning Methods for Distinguishing Open Clusters from Asterisms using Gaia DR3 data
10:40-11:00 Giorgi Kurkhuli, Teimuraz Kvernadze, G. Kakauridze, B. Kilosanidze (AbAO, Georgia) [CT]: Observations of the selected astronomical objects using Polarization-Holographic Imaging Stokes Polarimeter
11:00-11:20 Arman Khachatryan (BAO, Armenia) [CT]: Distance Evaluation and Young Stellar Membership Determination in the G345.5+1.5 Star-Forming Region
11:20-11:50    Coffee/tea break
11:50-12:10 Maria Rah (BAO, Iran) [CT]: Pulsars and Millisecond Pulsars II: Deep Diving into Evolutionary Pathways, Parameters, and Equations
12:10-12:30 Anna Tabatadze, V. Kukhianidze (AbAO, Georgia) [CT]: Differential Rotation of F G K M MainSequence Stars
Session 4: Galaxies and Cosmology. Chair: Hayk Harutyunian (BAO, Armenia)
12:30-13:00 Bidzina Kapanadze (AbAO, Georgia) [IT]: Relativistic Magnetic Reconnection in Blazar Jets
13:00-13:20 Sergo Kapanadze (AbAO, Georgia) [CT]: Strong X-ray flaring activity of the BL Lacertae source OJ 287 in 2016 October–2017 April
13:20-14:20 Lunch break
14:20-14:40 Martik Hovhannisyan (IAPP, Armenia) [CT]: Studies of the characteristics of the extended galaxy 4C 39.04 and the distribution of extragalactic sources around it
14:40-15:00 Abraham Mahtessian (BAO, Armenia) [CT]: Evidence of galaxy expansion from Globular clusters
15:00-15:20 Abraham Mahtessian (BAO, Armenia) [CT]: Is the Universe expanding at an accelerating rate?
15:20-15:40 Hayk Harutyunian (BAO, Armenia) [CT]: The existence of dark energy leaves no room for dark matter
15:40-16:00 Arpine Torosyan (BAO, Armenia) [CT]: Andromeda galaxy – our neighbor that evolved further than our one
16:00-16:30    Coffee/tea break
16:30-18:00 Excursion in BAO: BAO UNESCO Centre and 2.6m telescope
18:00-19:00 Dinner
19:00-23:00 Evening excursion to Yerevan: Cascade, Northern Avenue, Republic Square, etc.


Wednesday, 07 May 2025
09:30-10:00 Breakfast
10:00-13:30 Excursion to Ejmiatzin Cathedral and churches and Zvartnots medieval cathedral
13:30-14:30 Lunch break
14:30-18:00 Excursion to Amberd Fortress, Tegher Monastery and Armenian Kings Cemetery in Aghdzk
19:00-20:00 Dinner


Thursday, 08 May 2025
09:30-10:00 Breakfast
Session 5: Galaxies and Cosmology. Theoretical Astrophysics. Chair: Teimuraz Kvernadze (AbAO, Georgia)
10:00-10:30 Aram Saharyan (YSU, Armenia) [IT]: Models of accelerated expansion from extra dimensions
10:30-11:00 Alexander Tevzadze, G. Khujadze, D. Gogichaishvili, G. Chagelishvili, H. Foysi (AbAO, Georgia) [IT]: Aerodynamic Sound in Turbulent Shear Layers
11:00-11:30 Areg Mickaelian (BAO, Armenia) [IT]: Recent activities of the Armenian Virtual Observatory (ArVO)
11:30-12:00    Coffee/tea break
12:00-12:20 Hayk Abrahamyan (BAO, Armenia) [CT]: Activity types for 1864 variable radio sources based on SDSS fine classification
12:20-12:40 Varduhi Mkrtchyan (BAO, Armenia) [CT]: Investigation of Blazars from BZCAT catalogue in UV
Session 6: Theoretical Astrophysics. Chair: Aram Saharyan (YSU, Armenia)
12:40-13:00 Zaza Osmanov (AbAO, Georgia) [CT]: Vortex-driven magnetic field and UHE particles from the black hole magnetospheres
13:00-13:30 Artur Nikoghossian (BAO, Armenia) [IT]: Residence Time of the Spectral Lines Quanta in Optically Active Media
13:30-14:30 Lunch break
14:30-15:00 Gevorg Hajyan (YSU, Armenia) [IT]: Electromagnetic properties of stellar matter
15:00-15:30 Grigor Alaverdyan (YSU, Armenia) [IT]: Thermodynamic properties of hot stellar matter with a hadron-quark phase transition
15:30-15:50 Hovhannes Pikichyan (BAO, Armenia) [CT]: The problem of diffuse reflection in the case of redistribution of radiation by frequencies and directions: the method of decomposition the resulting field (DRF)
15:50-16:00 Colloquium Group Photo
16:00-16:30    Coffee/tea break
16:30-17:30 Excursion in Byurakan:
19:00-22:00 Colloquium Banquet


Friday, 09 May 2025
09:30-10:00 Breakfast
Session 7: Archaeoastronomy. Education and Public Outreach. Chair: Chair: Areg Mickaelian (BAO, Armenia)
10:00-10:20 Hayk Malkhasyan (BAO, Armenia) [CT]: On Possible Astronomical Function of some T-shaped Pillars in Pre-Pottery Neolithic site of “Portasar” (Göbekli Tepe)
10:20-10:40 Areg Mickaelian (BAO, Armenia) [CT]: Recent activities of the Armenian Astronomical Society (ArAS)
10:40-11:10 Gayane Baleyan (BAO, Armenia) [IT]: Educational and public activities at BAO and IAU South West and Central Asian ROAD
11:10-11:30 Sona Farmanyan (BAO, Armenia) [CT]: Astro Sites of Armenia and Georgia
11:30-12:00    Coffee/tea break
12:00-12:20 Ani Davtyan (BAO, Armenia) [CT]: Scientific meetings and summer schools organized in Armenia
12:20-12:40 Lilit Darbinyan (BAO, Armenia) [CT]: Scientific (Astro) journalism activities in Armenia
12:40-13:10 Discussion and Summary. Closing Ceremony
13:30-14:30 Lunch break
14:30-18:00 Excursion to Yerevan: Matenadaran, Museum of History of Yerevan, Cognac Factory
18:00-19:00 Dinner
19:00-21:00 Ballet "Gayane" in Armenian National Opera and Ballet Theatre, Yerevan


Saturday, 10 May 2025
09:30-10:00 Breakfast
Departure of Georgian participants