Serendipitous and targeted mm/sub-mm transient searches with wide-FOV telescope
Karri Koljonen, Claudio Ricci, Thomas Stanke, Doug Johnstone, Atul Mohan, Francisco Montenegro-Montes, John Orlowski-Scherer

TL;DR
This paper discusses the potential of wide-field, high-sensitivity mm/sub-mm telescopes for discovering and studying transient and variable phenomena in the universe, emphasizing their unique ability to probe obscured environments and enable multi-messenger astronomy.
Contribution
It proposes the design and scientific case for a wide-field, high-sensitivity mm/sub-mm telescope capable of systematic surveys and rapid follow-up of transient events, filling a key observational gap.
Findings
Enables systematic monitoring of the Galactic Plane and transient phenomena.
Facilitates rapid response to multi-messenger alerts with large localization regions.
Provides unique insights into obscured astrophysical environments.
Abstract
The millimeter/sub-millimeter (mm/sub-mm) sky remains a rich but under-explored frontier for transient and variable phenomena. A wide-field, high-sensitivity instrument with a large aperture and degree-scale field of view would open this regime, enabling both systematic survey monitoring and rapid-response follow-up. Key science opportunities include Galactic Plane monitoring and surveys to discover and characterize time-variable emission from young stellar objects, magnetically active and flaring stars, compact binaries, and explosive events, as well as prompt responses to multi-messenger alerts with large localization regions (e.g., gravitational-wave triggers). Multi-band capability, rapid slewing, and high sensitivity are essential to probe energetic processes such as jet launching, relativistic shocks and accretion flows in unprecedented detail. While long-term monitoring is well…
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Taxonomy
TopicsGamma-ray bursts and supernovae · Astrophysics and Star Formation Studies · Radio Astronomy Observations and Technology
