Concepedia

A gravitationally lensed water maser in the early Universe

C. M. Violette Impellizzeri, J. P. McKean, P. Castangia, A. L. Roy, C. Henkel, A. Brunthaler, O. Wucknitz

Nature · 2008 · 66 citations · 30 references

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30

Unified Models for Active Galactic Nuclei and Quasars

Robert Antonucci · Annual Review of Astronomy and Astrophysics · 1993 · 3.9K citations

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

Makoto Miyoshi, J. M. Moran, J. R. Herrnstein et al. · Nature · 1995 · 1.1K citations

, , +14

A geometric distance to the galaxy NGC4258 from orbital motions in a nuclear gas disk

J. R. Herrnstein, J. M. Moran, L. J. Greenhill et al. · Nature · 1999 · 479 citations · Full text

, , +6

A Warped Accretion Disk and Wide‐Angle Outflow in the Inner Parsec of the Circinus Galaxy

The Astrophysical Journal · 2003 · 311 citations · Full text

, , +14

MEGA-MASERS AND GALAXIES

K. Y. Lo · Annual Review of Astronomy and Astrophysics · 2005 · 225 citations

, , +10