A water-vapour giga-maser in the active galaxy TXFS2226 – 184

Spectropolarimetry and the nature of NGC 1068

1985 • 1,357 citations

Evidence for a black hole from high rotation velocities in a sub-parsec region of NGC4258

1995 • 1,029 citations

Is every quasar beamed?

1989 • 682 citations

The fuelling of active galactic nuclei

1990 • 465 citations

H2O masers in star-forming regions

1989 • 257 citations

Detection of a Subparsec Diameter Disk in the Nucleus of NGC 4258

1995 • 214 citations

Water maser emission from X-ray-heated circumnuclear gas in active galaxies

1994 • 172 citations

Detection of compact ultraviolet nuclear emission in liner galaxies

1995 • 136 citations

The Mass Accretion Rate through the Masing Molecular Disk in the Active Galaxy NGC 4258

1995 • 123 citations

Water-vapour maser emission from galactic nuclei

1984 • 101 citations

Circumnuclear water vapor masers in active galaxies

1986 • 97 citations

Fanaroff-Riley I galaxies as the parent population of BL Lacertae objects. I - X-ray constraints

1990 • 96 citations

Detection of strong H2O emission from galaxy NGC4945

1979 • 88 citations

The discovery of five new H2O megamasers in active galaxies

1994 • 72 citations

Planar H2O masers in star-forming regions

1992 • 66 citations

The masering torus in NGC 4258

1994 • 64 citations

The 60 micron to 20 centimeter infrared-to-radio ratio within spiral galaxies

1990 • 62 citations

A very bright water vapour maser source in the galaxy NGC3079

1985 • 52 citations

First images of water vapor masers in the galaxy M33

1990 • 42 citations

Fanaroff-Riley I galaxies as the parent population of BL Lacertae objects. II - Optical constraints

1991 • 40 citations

H 2O Maser Emission from the Nuclei of NGC 253 and M51

1987 • 40 citations

Microarcsecond proper motions of extragalactic water vapor masers in M33

1993 • 34 citations

VLBI observations of the water vapor maser in the nucleus of NGC 3079

1990 • 33 citations