Recent Searches for the Radio Lines of NH_3 in Comets

J. Hatchell, M. K. Bird, F. F. S. van der Tak +1

Radio observations in the ammonia inversion lines of four comets, C/2001 A2 (LINEAR), 153P/Ikeya-Zhang, C/2001 Q4 (NEAT) and C/2002 T7 (LINEAR), were performed at the Effelsberg 10…