1.2k citations · 4.5k across the 36 of their papers we have counts for
37 papers
What Determines the Boundaries of H2O Maser Emission in an X-ray Illuminated Gas Disk ?
C. Y. Kuo, F. Gao, J. A. Braatz +7
High precision mapping of H2O megamaser emission from active galaxies has revealed more than a dozen Keplerian H2O maser disks, which enable a ~4% uncertainty estimate of the Hubbl…
An Updated Reference Frame for the Galactic Inner Parsec
Jeremy Darling, Jennie Paine, Mark J. Reid +3
Infrared observations of stellar orbits about Sgr A* probe the mass distribution in the inner parsec of the Galaxy and provide definitive evidence for the existence of a massive bl…
The parallax and 3D kinematics of water masers in the massive star-forming region G034.43+0.24
Xiaofeng Mai, Bo Zhang, M. J. Reid +12
We report a trigonometric parallax measurement of 22 GHz water masers in the massive star-forming region G034.43+0.24 as part of the Bar and Spiral Structure Legacy (BeSSeL) Survey…
A Milliarcsecond-accurate Position for Sagittarius A*
Shuangjing Xu, Bo Zhang, Mark J. Reid +3
The absolute position of Sgr A*, the compact radio source at the center of the Milky Way, had been uncertain by several tens of milliarcseconds. Here we report improved astrometric…
The Megamaser Cosmology Project. XIII. Combined Hubble constant constraints
D. W. Pesce, J. A. Braatz, M. J. Reid +8
We present a measurement of the Hubble constant made using geometric distance measurements to megamaser-hosting galaxies. We have applied an improved approach for fitting maser dat…
Constraining a black hole companion for M87* through imaging by the Event Horizon Telescope
Mohammadtaher Safarzadeh, Abraham Loeb, Mark Reid
The Event Horizon Telescope (EHT), a global very long baseline interferometric array observing at a wavelength of 1.3 mm, detected the first image of the M87 supermassive black hol…