Institution: | 1Institute of Physics, University of Szczecin, ul. Wielkopolska 15, 70-451 Szczecin, Poland;2Torun Centre for Astronomy, Nicolaus Copernicus University, ul. Gagarina 11, 87-100 Toruń, Poland;3Dipartimento di Fisica 'Galileo Galilei', Universitàdegli Studi di Padova, via Marzolo 8, 35131 Padova, Italy;4International School for Advanced Studies, SISSA, via Beirut 2-4, 34014 Trieste, Italy;5Nuclear and Astrophysics Laboratory, University of Oxford, Keble Road, Oxford OX1 3RH |