Technology

58137 readers

4348 users here now

This is a most excellent place for technology news and articles.

Our Rules

Follow the lemmy.world rules.
Only tech related content.
Be excellent to each another!
Mod approved content bots can post up to 10 articles per day.
Threads asking for personal tech support may be deleted.
Politics threads may be removed.
No memes allowed as posts, OK to post as comments.
Only approved bots from the list below, to ask if your bot can be added please contact us.
Check for duplicates before posting, duplicates may be removed

Approved Bots

founded 1 year ago

MODERATORS

[email protected]

337

Scientists confirm that the first black hole ever imaged is actually spinning (www.engadget.com)

submitted 11 months ago by [email protected] to c/[email protected]

42 comments fedilink hide all child comments

Scientists confirm that the first black hole ever imaged is actually spinning::The first black hole humanity has ever imaged has also provided us with what researchers are calling "unequivocal evidence" that black holes spin.

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 1 points 11 months ago (1 children)

I see. Thank you. So, you can use light to infer the mass, and then the volume information to infer the spin? Easy enough.

[–] [email protected] 3 points 11 months ago* (last edited 11 months ago)

That would be a general method, if we were close enough to observe the shape of the event horizon (which we aren’t).

The article is describing another way, which only works in this case because the black hole is precessing so extremely that the changing axis of rotation is frame-dragging the polar jets along with it.