471 citations · 1.9k across the 15 of their papers we have counts for
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astro-ph1998★ 38 cited
Polarimetric Observations of the Masers in NGC 4258: An Upper Limit on the Large-Scale Magnetic Field 0.2 pc from the Central Engine
J. R. Herrnstein, J. M. Moran, L. J. Greenhill +2
We report VLA 1 sigma upper limits of 1.5% and 3% on the intrinsic circular and linear fractional polarizations, respectively, of the water vapor maser emission 0.2 pc from the cen…
astro-ph1998
Cosmology With High-Redshift Water Masers
J. R. Herrnstein
Multi-epoch VLBA observations of the maser in NGC 4258 have yielded a 4% geometrical distance to the galaxy. The potential scientific payoffs of finding similar objects at large di…
astro-ph1998★ 70 cited
VLBA Continuum Observations of NGC 4258: Constraints on an Advection-Dominated Accretion Flow
J. R. Herrnstein, L. J. Greenhill, J. M. Moran +4
We report a 3 sigma upper limit of 220 microJanskys on any 22-GHz continuum emission coincident with the central engine in NGC 4258. If NGC 4258 is powered by an advection-dominate…