66 citations · 279 across the 12 of their papers we have counts for
12 papers
Observational Tests of Sgr A*'s State of the Accretion Flow
F. Yusef-Zadeh, R. G. Arendt, H. Bushouse +4
General relativistic magneto-hydrodynamic (GRMHD) simulations of the possibly magnetically arrested disk (MAD) of the accretion flow of Sgr A* predict short and long time variabili…
Second Generation Planet Formation in Post-AGB Discs: Testing the Role of Gravitational Instability
Ali Pourmand, Devika Kamath, Orsola De Marco +1
Post-asymptotic giant branch (post-AGB) binary stars are evolved systems that host circumbinary discs formed through mass loss during late stage binary interactions. Their structur…
Three-dimensional simulations of accretion disks in pre-CE systems
Ana L. Juarez-Garcia, Orsola De Marco, Fabio De Colle +4
Before a binary system enters into a common envelope (CE) phase, accretion from the primary star onto the companion star through Roche Lobe overflow (RLOF) will lead to the formati…
ALMA Detection of Extreme Blue-Shifted Ionized Gas Within 0.2 pc of Sgr A* from -480 to -300 km/s
Marc J. Royster, Farhad Yusef-Zadeh, Mark Wardle +3
We have used the capabilities of ALMA to probe the ionized gas towards the Galactic center with the H30alpha mm hydrogen recombination line within 30'' of the Galaxy's dynamical ce…
Sgr A* and its Environment: Low Mass Star Formation, the Origin of X-ray Gas and Collimated Outflow
F. Yusef-Zadeh, M. Wardle, R. Schödel +5
We present high-resolution multiwavelength radio continuum images of the region within 150 of Sgr A*, revealing a number of new extended features and stellar sources in this reg…
The Discovery of Radio Stars within 10 arcseconds of Sgr A* at 7mm
F. Yusef-Zadeh, D. A. Roberts, H. Bushouse +4
Very Large Array observations of the Galactic Center at 7 mm have produced an image of the 30 arcseconds surrounding Sgr A* with a resolution of 82x42 milliarcseconds (mas). A comp…
ALMA Observations of the Galactic Center: SiO Outflows and High Mass Star Formation near Sgr A*
F. Yusef-Zadeh, M. Royster, M. Wardle +7
ALMA observations of the Galactic center with spatial resolution resulted in the detection of 11 SiO (5-4) clumps of molecular gas within 0.6pc (15) of Sgr A*…
An Inverse Compton Scattering Origin of X-ray Flares from Sgr A*
F. Yusef-Zadeh, M. Wardle, K. Dodds-Eden +6
The X-ray and near-IR emission from Sgr A* is dominated by flaring, while a quiescent component dominates the emission at radio and sub-mm wavelengths. The spectral energy distribu…
Massive Star Formation of the Sgr A East HII Regions Near the Galactic Center
F. Yusef-Zadeh, J. H. Lacy, M. Wardle +4
A group of four compact HII regions associated with the well-known 50 km/s molecular cloud is the closest site of on-going star formation to the dynamical center of the Galaxy, at…
High Spectral and Spatial Resolution Observations of Shocked Molecular Hydrogen at the Galactic Center
F. Yusef-Zadeh, S. R. Stolovy, M. Burton +2
The presence of OH (1720 MHz) masers, and the absence of counterparts at 1665/1667 MHz has proved to be a clear diagnostic of shocked molecular gas associated with Galactic superno…
The Galactic Center: An Interacting System of Unusual Sources
F. Yusef-Zade, F. Melia, M. Wardle
The region bounded by the inner tens of light years at the center of the Milky Way contains five principal components that coexist within the central deep gravitational potential w…
Anomalous Motion of Ionized Gas in the Sickle (G0.18--0.04) Near the Galactic Center
F. Yusef-Zadeh, D. A. Roberts, M. Wardle
We present VLA measurements of H92alpha radio recombination line emission from an unusual HII region G0.18--0.04, the ``Sickle'', with spatial and spectral resolutions of 27" times…