The variability study of 6.7 GHz methanol masers has become a useful way to improve our
understanding of the physical conditions in high-mass star-forming regions. Based on the …

We present the results of a 5-yr monitoring program of 42 sources targeted at 6.7-GHz
methanol masers, conducted from 2017 March to 2022 October using the Irbene 32-and 16 …

We present observations of the 6.7 GHz methanol and 4.8 GHz formaldehyde masers
toward the high-mass young stellar object G24. 33+ 0.14 (hereafter G24). Our observations …

Infrared dark clouds (IRDCs) represent the earliest stage of high-mass star formation and
host molecular cores at different states of activity from quiet state without any IR-signature of …

We report the detection of the disk/torus, outflow, and inflow structures traced by H 2 O
masers toward a high-mass young stellar object W51 North during its H 2 O maser outburst …

The high-mass young stellar object G358. 93-0.03-MM1 underwent a rapid accretion burst
event from 2019 January to June, resulting in flares observed in most class II methanol …

Giant molecular clouds (GMC) in our and other galaxies and small dense molecular clouds
inside the Galaxy (IRDC) form cores due to gravitational instability, in which massive stars …

Abstract The Wide-field Infrared Survey Explorer and its follow-up Near-Earth Object (NEO)
mission scan the mid-infrared sky twice a year. The spatial and temporal coverage of the …

We present a sideband separating downconverter for radio astronomy applications,
featuring radio frequency image rejection calibration for frequencies between 18 and 45 …

The Maser Monitoring Organisation is a collection of researchers exploring the use of time-
variable maser emission in the investigation of astrophysical phenomena. The forward …