The structure of a penumbral connection between solar pores J. Hirzberger, S. Stangl, K. Gersin, J. Jurčák, K. G. Puschmann and M. Sobotka A&A, 442 3 (2005) 1079-1086 Published online: 14 October 2005 DOI: 10.1051/0004-6361:20053257