Also in this case luminosity is exactly the correct term as it describes the intrinsic brightness (how much light is emitted in a given unit of time) of an object not its appearent brightess (how bright it is to the observer) which is affected by distance and other factors.
This is a press release from the NRAO.
https://public.nrao.edu/news/2018-alma-luminous-streamers/
Also in this case luminosity is exactly the correct term as it describes the intrinsic brightness (how much light is emitted in a given unit of time) of an object not its appearent brightess (how bright it is to the observer) which is affected by distance and other factors.