299 citations · 1k across the 11 of their papers we have counts for
11 papers
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…
The Detection of HO Maser Emission from mid-IR Red Galaxies
C. Y. Kuo, C. Y. Tai, A. Constantin +7
We report the detection of HO maser emission in 4 out of 77 (5.2%) mid-IR red galaxies that meet the color criteria of and and are classified as Type-…
Ordered magnetic fields around the 3C 84 central black hole
G. F. Paraschos, J. -Y. Kim, M. Wielgus +279
3C84 is a nearby radio source with a complex total intensity structure, showing linear polarisation and spectral patterns. A detailed investigation of the central engine region nec…
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…
Monitoring the Morphology of M87* in 2009-2017 with the Event Horizon Telescope
Maciek Wielgus, Kazunori Akiyama, Lindy Blackburn +26
The Event Horizon Telescope (EHT) has recently delivered the first resolved images of M87*, the supermassive black hole in the center of the M87 galaxy. These images were produced…
The Megamaser Cosmology Project. X. High Resolution Maps and Mass Constraint for SMBHs
W. Zhao, J. A. Braatz, J. J. Condon +8
We present high resolution (sub-mas) VLBI maps of nuclear H2O megamasers for seven galaxies. In UGC6093, the well-aligned systemic masers and high-velocity masers originate in an e…
Enhancing the H2O Megamaser Detection Rate Using Optical and Mid-infrared Photometry
C. Y. Kuo, A. Constantin, J. A. Braatz +8
Water megamasers from circumnuclear disks in galaxy centers provide the most accurate measurements of supermassive black hole masses and uniquely probe the sub-parsec accretion pro…
The Megamaser Cosmology Project.IX. Black hole masses for three maser galaxies
F. Gao, J. A. Braatz, M. J. Reid +9
As part of the Megamaser Cosmology Project (MCP), we present VLBI maps of nuclear water masers toward five galaxies. The masers originate in sub-parsec circumnuclear disks. For thr…
The Megamaser Cosmology Project VIII. A Geometric Distance to NGC 5765b
F. Gao, J. A. Braatz, M. J. Reid +7
As part of the Megamaser Cosmology Project (MCP), here we present a new geometric distance measurement to the megamaser galaxy NGC 5765b. Through a series of VLBI observations, we…
The Megamaser Cosmology Project: IV. A Direct Measurement of the Hubble Constant from UGC 3789
M. J. Reid, J. A. Braatz, J. J. Condon +4
In Papers I and II from the Megamaser Cosmology Project (MCP), we reported initial observations of water masers in an accretion disk of a supermassive black hole at the center of t…
The Megamaser Cosmology Project. III. Accurate Masses of Seven Supermassive Black Holes in Active Galaxies with Circumnuclear Megamaser Disks
C. Y. Kuo, J. A. Braatz, J. J. Condon +7
Observations of HO masers from circumnuclear disks in active galaxies for the Megamaser Cosmology Project allow accurate measurement of the mass of supermassive black holes (BH…