Coordinated NIR/mm observations of flare emission from Sagittarius A*

TL;DR

This paper presents simultaneous millimeter and near-infrared observations of Sagittarius A*'s flare emissions, providing high-quality data and modeling to understand the physical processes behind its variability.

Contribution

It offers the first high-quality, continuous multi-wavelength observational data of Sgr A*'s flares and models the physical mechanisms driving its variable emission.

Findings

High-quality, continuous mm/sub-mm light curve of Sgr A*

Successful modeling of flare emission processes

Insights into the physical origin of variability

Abstract

We report on a successful, simultaneous observation and modelling of the millimeter (mm) to near-infrared (NIR) flare emission of the Sgr A* counterpart associated with the supermassive black hole at the Galactic centre (GC). We present a mm/sub-mm light curve of Sgr A* with one of the highest quality continuous time coverages and study and model the physical processes giving rise to the variable emission of Sgr A*.