XVIIth Hvar Astrophysical Colloquium Programme

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Monday, 20 September
Tuesday, 21 September
Wednesday, 22 September
Thursday, 23 September
Friday, 24 September

Abstract book (pdf)


Note: All poster presentations are linked in pdf format to abstract titles.


Monday, 20 September 2021

Opening session, chair: M. Dumbović
15:00 - 15:05 Opening words  
15:05 - 16:05 Keynote talk: E. Cliver Extreme solar and solar-terrestrial events
16:05 - 16:15 coffee break  

Session 1, chair: N. Goplaswamy
16:15 - 16:30 B. B. Karak Long-Term Evolution of the Sun's magnetic field during Cycles 15-19 based on their proxies from Kodaikanal Solar Observatory
16:30 - 16:45 S. Jain Prediction of 11-year solar cycle strength with Hemispheric Sunspot Numbers
16:45 - 17:00 T. Podladchikova Medium-term predictions of F10.7 and F30 cm solar radio flux with the adaptive Kalman filter
17:00 - 17:15 J. Murakozy Internal dynamics of sunspot groups during their decay

Short poster presentations
17:15 - 17:20 V. Zharkova Joint actions on Earth of the current grand solar minimum and solar inertial motion
17:20 - 17:25 D. Knipp Great Auroral Storms of the Last 500 Years
17:25 - 17:30 A. Elek On the long-term evolution of solar faculae
17:30 - 17:35 J. Koza IRIS's view of solar cycle 24: variability of Mg II h and k lines
17:35 - 17:40 I. Poljančić Beljan Solar Cycle Phase Related Changes of the differential Roration Parameters
17:40 - 17:45 B. Belucz Implications of intermittent high-latitude reverse meridional flow cell on polar fieldpatterns
17:45 - 17:50 T. Chen Understanding stellar flares by observing the high-energy Sun
17:50 - 17:55 T. Kaltman Catalogue of hot solar jets and prospects for its development
17:55 - 18:00 B. Heber Observations of energetic particles over 2 solar cycles from the Electron Proton Helium Instrument aboard the Solar and Heliospheric Observatory

Social event, chair: J. Čalogović

18:00 - 19:00 Icebreaker in Gather Town


Tuesday, 21 September 2021

Session 2, chair: A. Veronig
14:30 - 14:55 Invited talk: N. Magyar Generation and propagation of switchbacks in the solar atmosphere
14:55 - 15:05 coffee break  

Session 2, chair: A. Veronig
15:05 - 15:30 invited talk: C. Fischer High-resolution observations of the magnetic quiet Sun
15:30 - 15:45 A. Chian Lagrangian coherent structures in the supergranular turbulence
15:45 - 16:00 M. Benko Dynamic and magnetism of selected phenomena in the atmosphere of the Sun
16:00 - 16:15 I. Skokić Measuring differential rotation from single-dish ALMA images of the Sun
16:15 - 16:30 B. Schmieder Empirical atmosphere model in a mini flare during magnetic reconnection
16:30 - 16:45 coffee break  

Session 2, chair: B. Vršnak
16:45 - 17:00 M. Cecere Numerical study of MHD modes in coronal loops
17:00 - 17:15 S. J. G. Manrique Observational Detection of Drift Velocity between Ionized and Neutral Species in Solar Prominences
17:15 - 17:30 A. Bemporad Combining White Light and UV Lyman-alpha Coronagraphic Images to determine the Solar Wind Speed: the Quick Inversion Method

Short poster presentations
17:30 - 17:35 A. Soosaleon Multi-Photon Ionisation in Coronal Plasma
17:35 - 17:40 A. Soosaleon Multi-Photon Ionisation of Coronal Elements
17:40 - 17:45 A. Rajhans Flows in 0D simulations of coronal loops
17:45 - 17:50 P. K. Kayshap Shocks in the chromosphere and transition-regionabove sunspot umbra
17:50 - 17:55 R. Joshi Recurring solar jets from a bipolar active region

Social event, chair: S. Heinemann

18:00 - 19:00 Meet the senior scientists


Wednesday, 22 September 2021

Session 3, chair: I. Ballai
15:00 - 15:25 Invited talk: J. Dudik Three-dimensional magnetic reconnection in eruptive solar flares
15:25 - 15:40 M. Gupta Magnetic helicity and energy budget around large confined and eruptive flares
15:40 - 15:55 P. Zhang Simulation study of the wave-propagation effect of solar radio bursts
15:55 - 16:10 D. Baker Evolution of Plasma Composition in an Eruptive Flux Rope
16:10 - 16:25 A. Sahade Polarity relevance in flux rope deflections triggered by coronal holes
16:25 - 16:40 coffee break  

Session 3, chair: I. Ballai
16:40 - 17:05 Invited talk by K. Dissauer Coronal dimmings as early diagnostics of solar eruptions
17:05 - 17:20 A. Veronig Coronal dimmings as a diagnostics for solar and stellar CMEs
17:20 - 17:35 N. Gopalswamy The Importance of Latitudinal Connectivity in GLE Events Revealed by Fermi Large Area Telescope Observations

Short poster presentations
17:35 - 17:40 A. S. H. To The Evolution of Plasma Composition During a Solar Flare
17:40 - 17:45 S. Soos On the differences in the periodic behaviour of magnetic helicity flux in flaring active
17:45 - 17:50 J. Saqri Multi-instrument STIX microflare study
17:50 - 17:55 A. Szaforz Quasi-periodic pulsations visible in the STIX light curves
17:55 - 18:00 D. Burud Study of solar activities on spotless days during descending phase of solar cycles 23 and 24

Social event

18:00 - 19:00 Free open discussion over beer


Thursday, 23 September 2021

Session 3, chair: A. Veronig
15:00 - 15:25 Invited talk: N. Al Haddad Inferring the Shape of CMEs from Non-Radial Deflection Flows
15:25 - 15:40 M. Temmer iSWAT H1+2 Clusters: CME Propagation Through Ambient Solar Wind
15:40 - 15:55 R. Erdelyi The Solar Activity Monitor Network - SAMNet

Short poster presentations
15:55 - 16:00 V. Prakash Halo CMEs, active region and flare ribbon properties
16:00 - 16:05 P. Devi Eruption of quite circular solar filament
16:05 - 16:10 V. Kiselev Relationships between the Spectra of near-Earth Proton Enhancements, Hard X-Ray Bursts, and CME Speeds
16:10 - 16:15 T. Kaltman Influence of the dynamics of the Langmuir wave turbulence spectrum on the observed
16:15 - 16:20 S. Samwel In Situ Solar Energetic Electron Events and Their Related Radio Burst Signatures
16:20 - 16:35 coffee break  

Session 4, chair: D. Utz
16:35 - 17:00 Invited talk by S. Hofmeister How the solar wind from coronal holes shapes interplanetary space
17:00 - 17:15 P. Geyer Expansion of Stream Interaction Regions between 1 and 1.5 AU during Declining Solar Activity
17:15 - 17:30 Y. Yermolaev The fall of the solar wind parameters below the "floor" in minimum of 22/23 cycles

Short poster presentations
17:30 - 17:35 S. G. Heinemann On how to estimate the far-side open flux using STEREO coronal holes
17:35 - 17:40 D. Milošić Improving the Empirical Solar Wind Forecast (ESWF) model
17:40 - 17:45 M. Dumbović Generic profile of a long-lived CIR and CME-CIR interactions
17:45 - 17:50 F. Koller Production of magnetosheath jets during SIRs and CMEs
17:50 - 17:55 P. Erdemir Investigation of CME and HSS driven Joule heating during high geomagnetic activity
17:55 - 18:00 G. Gonzalez Ionospheric irregularities during CME and CIR-driven geomagnetic storms over the Argentinian EIA region

Social event

18:00 - 19:00 Free open discussion over beer


Friday, 24 September 2021

Session 4, chair: M. Dumbović
15:00 - 15:25 Invited talk: E. Kilpua Forecasting the Magnetic Structure of Earth-Impacting Coronal Mass Ejections Using Data-Driven Modelling
15:25 - 15:40 W. Mishra Radial sizes and expansion behavior of ICMEs in solar cycles 23 and 24
15:40 - 15:55 D. Maričić Isolated Earth-Impacting Interplanetary Coronal Mass Ejections and corresponding Galactic Cosmic Ray Flux Variations
15:55 - 16:10 S. Pal An approach for forecasting earthbound coronal mass ejections
16:10 - 16:25 R. Miteva SPREAdFAST forecasting model: First results on the simulation of historical SEP events
16:25 - 16:35 coffee break  

Session 4, chair: M. Dumbović
16:35 - 16:50 N. Shlyk The influence of interacting solar wind disturbances on galactic cosmic ray variations
16:50 - 17:05 V. Zharkova Local acceleration of solar wind particles in current sheets and their diagnostics from modern space observations
17:05 - 17:20 R. Miranda Intermittency and complexity of magnetic field turbulence within reconnection exhausts in the solar wind at 1 AU

Short poster presentations
17:20 - 17:25 A. Wagner Novel Benchmarking Scheme for Coronal Magnetic Field Simulations
17:25 - 17:30 T. Žic The Drag-Based Modeling
17:30 - 18:35 K. Martinić Influence of the CME orientation on the ICME propagation
17:35 - 17:40 K. Choraghe The study of late recovery phase of an ICME induced extreme geomagnetic storms
17:40 - 17:45 L. Drescher Multiple ICME events - effects on the Earth's thermospheric layer and satellite orbits
17:45 - 17:50 A. Kirin Searching for ForbMod appropriate flux ropes
17:50 - 17:55 J. Chum On the relation between solar wind, cosmic rays and atmospheric electricity
17:55 - 18:00 S. Mukherjee Heliosphere-Solar Terrestrial impact on Himalaya, India

Clossing session, chair: D. Utz

18:00 - 18:05 Closing words
© 2021 Hvar Observatory.