277 citations · 4.5k across the 119 of their papers we have counts for
120 papers
Simultaneous JWST, NuSTAR, and VLA Monitoring of Sgr A*: A Unified Picture of the Variable IR, X-ray and Radio Emission
F. Yusef-Zadeh, M. Wardle, R. G. Arendt +5
Flux variability is a fundamental channel of information from Sgr A* because of its direct probe of processes occurring within an accretion disk under strong gravity. We present si…
Non-stop Variability of Sgr A* using JWST at 2.1 and 4.8 micron Wavelengths: Evidence for Distinct Populations of Faint and Bright Variable Emission
F. Yusef-Zadeh, H. Bushouse, R. G. Arendt +3
We present first results of JWST Cycle 1 and 2 observations of Sgr A* using NIRCam taken simultaneously at 2.1 and 4.8 micron for a total of ~48 hours over seven different epochs i…
Multiwavelength Observations of Sgr A*. II. 2019 July 21 and 26
Joseph M. Michail, Farhad Yusef-Zadeh, Mark Wardle +6
We report on the final two days of a multiwavelength campaign of Sgr A* observing in the radio, submillimeter, infrared, and X-ray bands in July 2019. Sgr A* was remarkably active,…
The interaction of a large-scale nuclear wind with the high velocity HII region G0.17+0.15
F. Yusef-Zadeh, Jun-Hui Zhao, R. Arendt +4
We investigate the nature of a Galactic center source, G0.17+0.15, lying along the northern extension of the Radio Arc near l~0.2deg. G0.17+0.15 is an HII region located toward the…
G359.13142-0.20005: A steep spectrum radio pulsar candidate with an X-ray counterpart running into the Galactic Center Snake (G359.1-0.2)
F. Yusef-Zadeh, Jun-Hui Zhao, R. Arendt +5
The Snake is a remarkable Galactic center radio filament with a morphology characterized by two kinks along its extent. The major and minor kinks are located where the f…
Detection of large-scale synchrotron radiation from the molecular envelope of the Sgr B cloud complex at the Galactic center
F. Yusef-Zadeh, M. Wardle, R. Arendt +6
We present highly sensitive measurements taken with MeerKAT at 1280 MHz as well as archival GBT, MWA and VLA images at 333, 88 and 74 MHz. We report the detection of synchrotron ra…