9 papers · 1 filter
Variability of Sagittarius A* at 3 GHz on minute-scale with MeerKAT
K. Kaur, I. Rammala-Zitha, A. Basu +21
The supermassive black hole Sagittarius A* (Sgr A*) exhibits temporal and spectral variability across the electromagnetic spectrum. However, variability at radio frequencies below…
Massive star formation at the Galactic crossroads: Insights from G358.69+0.03 in the Galactic center
A. Cheema, V. S. Veena, K. M. Menten +7
We investigated the high-mass star formation activity in a subregion of the Sagittarius E star-forming complex, centered at (l,b) = (358.69 deg, 0.03 deg), where infrared and radio…
Exploring the interplay between molecular and ionized gas in HII regions
S. Khan, A. M. Jacob, M. R. Rugel +8
We aim to constrain the kinetic temperature and H volume density of massive star-forming clumps associated with HII regions using multiple para-HCO transitions. In addition…
A global view on star formation: The GLOSTAR Galactic plane survey XII. Effelsberg's continuum view and data release
Y. Gong, W. Reich, M. R. Rugel +24
Extended radio continuum emission and its linear polarization play a key role in probing large-scale structures of synchrotron and free-free emission in the Milky Way. Despite the…
Faint absorption of the ground state hyperfine-splitting transitions of hydroxyl at 18 cm in the Galactic Disk
M. R. Rugel, H. Beuther, J. D. Soler +15
The interstellar hydride hydroxyl (OH) is a potential tracer of CO-dark molecular gas. We present new absorption line observations of OH at 18-cm wavelength towards four continuum…
SCOTCH III: Complete search for Hypercompact HII regions in the fourth quadrant
A. L. Patel, J. S. Urquhart, A. Y. Yang +7
We present high-frequency (18-24 GHz) radio continuum observations towards 335 methanol masers, excellent signposts for young, embedded high-mass protostars. These complete the sea…