Alfvénic waves in polar spicules E. Tavabi, S. Koutchmy, A. Ajabshirizadeh, A. R. Ahangarzadeh Maralani and S. Zeighami A&A, 573 (2015) A4 Published online: 08 December 2014 DOI: 10.1051/0004-6361/201423385