Metrewave Galactic Plane with the uGMRT (MeGaPluG) Survey: Lessons from the Pilot Study
Rohit Dokara, Nirupam Roy, Karl Menten, Sarita Vig, Prasun Dutta,, Henrik Beuther, Jagadheep D. Pandian, Michael Rugel, Md Rashid, Andreas, Brunthaler

TL;DR
This study demonstrates the feasibility of conducting high-resolution, sensitive radio continuum surveys of the Galactic plane using the upgraded uGMRT, providing valuable insights for future large-scale mapping efforts.
Contribution
The paper presents the first pilot survey of the Galactic plane with the uGMRT at low frequencies, developing an automated pipeline and demonstrating the survey's capability to produce high-quality mosaics.
Findings
Achieved 25'' resolution mosaics at 400 and 650 MHz
Point source sensitivity better than 5 mJy/beam
Validated the survey strategy and data processing pipeline
Abstract
Context. The advent of wide-band receiver systems on interferometer arrays enables one to undertake high-sensitivity and high-resolution radio continuum surveys of the Galactic plane in a reasonable amount of telescope time. However, to date, there are only a few such studies of the first quadrant of the Milky Way that have been carried out at frequencies below 1 GHz. The Giant Metrewave Radio Telescope (GMRT) has recently upgraded its receivers with wide-band capabilities (now called the uGMRT) and provides a good opportunity to conduct high resolution surveys, while also being sensitive to the extended structures. Aims. We wish to assess the feasibility of conducting a large-scale snapshot survey, the Metrewave Galactic Plane with the uGMRT Survey (MeGaPluG), to simultaneously map extended sources and compact objects at an angular resolution lower than and a point source…
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Taxonomy
TopicsAstronomy and Astrophysical Research · Radio Astronomy Observations and Technology · Astronomical Observations and Instrumentation
