Proceedings of the International Astronomical Union

Contributed Papers

Scattered OH Maser sources in the direction of W49N

Jose E. Mendoza-Torresa1, W. M. Gossa2, S. Streba3, A. A. Deshpandea4 and R. Ramachandrana5

a1 Instituto Nacional de Astrofisica, Optica y Electronica, Mexico

a2 NRAO, Socorro, NM, USA

a3 Salpointe Catholic High School, Tucson, AZ, USA

a4 Raman Research Institute, Bangalore, India

a5 San Jose, CA, USA


OH masers spots are observed with the VLBA at 1612, 1665 and 1667 MHz. The orientation of the ellipses resulting from scattering are all nearly aligned perpendicular to the galactic plane. These ordered orientation could be due to the galactic magnetic field.


  • OH masers – W49N – interstellar scattering