Kelly Lepo on Nostr: My favorite JWST result this week: Researchers observed the brightness of the disk ...
My favorite JWST result this week: Researchers observed the brightness of the disk around the Milky Way's resident supermassive black hole, Sagittarius A*.
The changes appear to be random, generating five to six big flares per day and several small sub-flares or bursts in between. The process causing the flares might be similar to flares and magnetic reconnection events seen on the Sun, but on a much larger scale.
The black hole's disk is actually less than one pixel in size — we see it as a blurry dot that changes in size due to instrumental effects.
https://webbtelescope.org/contents/news-releases/2025/news-2025-110
The changes appear to be random, generating five to six big flares per day and several small sub-flares or bursts in between. The process causing the flares might be similar to flares and magnetic reconnection events seen on the Sun, but on a much larger scale.
The black hole's disk is actually less than one pixel in size — we see it as a blurry dot that changes in size due to instrumental effects.
https://webbtelescope.org/contents/news-releases/2025/news-2025-110