Unveiling the Enigma: Radio Signals Expose Hidden Supermassive Black Holes

Astronomers using data from the Dark Energy Spectroscopic Instrument (DESI) have discovered a connection between the amount of dust surrounding a supermassive black hole and the strength of radio emission in extremely bright galaxies known as quasars. Quasars with more dust appeared redder and had stronger radio emission, while those with little-to-no dust appeared bluer. The findings suggest that powerful outflows of gas from the black hole collide with surrounding dust, causing shocks and radio emission. This connection provides insights into the evolution of galaxies and the role of red quasars in this process.