The GaLactic and Extragalactic All-sky MWA, or ‘GLEAM’ survey is a large-scale, high resolution survey of the sky. GLEAM will be used to explore remnants of explosions from ancient stars, the beginning and end of supermassive black holes, and what happens when clusters of galaxies collide. While previous radio surveys have been performed in a narrow frequency band, GLEAM has observed the sky across a much wider band. By viewing such an exceptionally broad spectrum of ‘radio colours’, astronomers will be able to discern and explore new features of the sky.
As well as being an extremely valuable resource for scientists, completion of the GLEAM survey is a big step towards SKA-Low. Lessons learned from the survey will help fine-tune the development of SKA-Low which will be capable of making even deeper observations into the universe. You can read more about the survey here.
A ‘radio colour’ view of the sky above a ‘tile’ of the MWA. Credit: Radio image by Natasha Hurley-Walker (ICRAR/Curtin) and the GLEAM Team. MWA tile and landscape by Dr John Goldsmith / Celestial Visions.