XVII^th HVAR ASTROPHYSICAL COLLOQUIUM      
The Sun and Heliosphere
20÷24 September 2021, in Hvar, Croatia   online

web-address https://oh.geof.unizg.hr/index.php/en/meetings/xvii-hac

Dear Colleagues,

The Hvar Astrophysical Colloquium (HAC) is organized every two years in the town of Hvar, Croatia with aim to bring together researchers from Europe and beyond, devoted to instrumentation, fundamental as well as applied research in the field of solar and heliospheric physics, space weather and space climate. After cancelling XVIIth HAC in 2020 due to Covid-19, it was decided it will be held online in 2021.

IMPORTANT NOTES:
meeting will be held via Zoom platform
registration is mandatory but free of charge
the official program is planned for 3 hours/day 15:00÷18:00h Croatia time (CEsT)
online social events will precede/follow the meeting every day
abstract submission is opened and closes August 15th 2021

SOC: Mateja Dumbović (Hvar Obs., Croatia, co-chair); Dominik Utz (Uni. Graz, Austria, co-chair);
Istvan Ballai (Uni. Sheffield, UK); Peter Gömöry (SAV, Slovakia); Nat Gopalswamy (NASA/GSFC, USA);
Jingnan Guo (USTC, China); Laure Lefevre (ROB, Belgium); Dibyendu Nandi (IISER, India);
Astrid Veronig (Uni. Graz, Austria); Bojan Vršnak (Hvar Obs., Croatia)

INVITED SPEAKERS: Ed Cliver (invited keynote, NSO, USA), Catherine Fischer (AIP, Germany), Norbert Magyar (Uni. Warwick, UK), Stefan Hofmeister (Uni. Columbia, USA), Karin Dissauer (NWRA, USA), Jaroslav Dudik (Obs. Ondrejov, Czech Rep.), Nada Al-Haddad (Uni. New Hamp., USA),
Emilia Kilpua (Uni. Helsinki, Finland)

CONTACT:
Mateja Dumbovic (mdumbovic[at]geof.hr; Domagoj Ruždjak (rdomagoj[at]geof.hr)
Hvar Observatory, Faculty of Geodesy, Kačićeva 26, HR-10000 Zagreb, Croatia