author = "Beck, R. and Loiseau, N. and Hummel, E. and Berkhuijsen, E. M. and 
                         Gr{\"a}ve, R. and Wielebinski, R.",
          affiliation = "{Max-Planck-Institut f{\"u}r Radioastronomie} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Max-Planck-Institut 
                         f{\"u}r Radioastronomie / Nuffield Radio Astronomy Laboratories} 
                         and {Max-Planck-Institut f{\"u}r Radioastronomie} and 
                         {Max-Planck-Institut f{\"u}r Radioastronomie / 
                         Max-Planck-Institut f{\"u}r Astronomie} and {Max-Planck-Institut 
                         f{\"u}r Radioastronomie}",
                title = "High-resolution polarization observations of M31. 1. Structure of 
                         the magnetic field in the southwestern arm",
              journal = "Astronomy \& Astrophysics",
                 year = "1989",
               volume = "222",
                pages = "58--68",
             keywords = "M31, spiral galaxies, radio continuum, Faraday rotation, 
                         interstellar magnetic fields, polarization.",
             abstract = "A region surrounding the main spiral arm southwest of the nucleus 
                         of M31 has been observed with VLA and Effelsberg radio telescopes 
                         and 20.1 and 6.3 cm wavelengths, respectively. The model of a 
                         basic axisymmetric nearly toroidal field in M31 is supported by 
                         the observed rotation measures and intrinsic magnetic field 
                         orientations. The observation of periodic deviations from the 
                         basic axisymmetric field suggest a three-dimensional arc-like 
                         field structure.",
                 issn = "0004-6361 and 1432-0746",
                label = "2987",
             language = "en",
           targetfile = "1989A+A___222___58B.pdf",
        urlaccessdate = "22 jan. 2021"