Cygnus A: No CO Absorption from a Molecular Torus

Details Cygnus A: No CO Absorption from a Molecular Torus Cygnus A: No CO Absorption from a Molecular Torus

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aas...18312204b&link_type=abstract

American Astronomical Society, 183rd AAS Meeting, #122.04; Bulletin of the American Astronomical Society, Vol. 25, p.1474

Astronomy and Astrophysics

Astronomy

Scientific paper

According to the Unified Model, narrow line radio galaxies are like Seyfert 2's - their Seyfert 1/quasar nuclei are blocked by a dusty molecular torus seen edge-on. If this is true we might expect to observe molecular absorption against the compact, flat spectrum radio cores of NLRGs and thereby not only confirm the torus model, but also derive valuable physical and kinematic information on the torus material itself. We searched for CO(1-0) absorption at lambda 3 mm against the core of the powerful, nearby NLRG Cygnus A, with negative results.

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