activity
19982022
most citedAn X-ray, IR, and Submillimeter Flare of Sagittarius A*

218 citations · 2.1k across the 42 of their papers we have counts for

collaborators

42 papers

astro-ph.GA2022★ 13 cited

Detection of a dense group of hyper-compact radio sources in the central parsec of the Galaxy

Jun-Hui Zhao, Mark R. Morris, W. M. Goss

Using the JVLA, we explored the Galactic center (GC) with a resolution of 0.05" at 33.0 and 44.6 GHz. We detected 64 hyper-compact radio sources (HCRs) in the central parsec. The d…

astro-ph.HE2020★ 22 cited

A population of compact radio variables and transients in the radio bright zone at the Galactic center observed with the Jansky Very Large Array

Jun-Hui Zhao, Mark R. Morris, W. M. Goss

Using JVLA data obtained from high-resolution observations at 5.5 GHz at multiple epochs in 2014 and 2019, we have detected a population of radio variables and transients in the ra…

astro-ph.HE2020

A Population of Compact Radio Sources at the Galactic Center

Jun-Hui Zhao, Mark R. Morris, W. M. Goss

The radio bright zone (RBZ) at the Galactic center has been observed with the JVLA in the A, B and C array configurations at 5.5 and 9 GHz. With a procedure for high-dynamic range…

astro-ph.GA2019★ 5 cited

A procedure for making high dynamic-range radio images: Deep imaging of the kiloparsec-scale radio structures of a distant blazar, NRAO 530, with JVLA data

Jun-Hui Zhao, Mark R. Morris, W. M. Goss

Using JVLA data of Sgr A* and NRAO 530 (as a calibrator) at 5.5, 9 and 33 GHz, we developed a procedure for the reduction of wideband data. We have demonstrated that, correcting fo…

astro-ph.GA2017★ 25 cited

A Nonthermal Radio Filament Connected to the Galactic Black Hole?

Mark R. Morris, Jun-Hui Zhao, W. M. Goss

Using the Very Large Array, we have investigated a non-thermal radio filament (NTF) recently found very near the Galactic black hole and its radio counterpart, SgrA*. While this NT…

astro-ph.GA2017★ 13 cited

ALMA CO(3-2) Observations of Star-Forming Filaments in a Gas-Poor Dwarf Spheroidal Galaxy

S. Michelle Consiglio, Jean L. Turner, Sara Beck +3

We report ALMA observations of CO(3-2) and CO(3-2) in the gas-poor dwarf galaxy NGC 5253. These 0.3"(5.5 pc) resolution images reveal small, dense molecular gas cloud…