Exciting New Study Confirms Blackhole Sgt A* Really Exists

Started by Unbeliever, November 12, 2018, 04:32:37 PM

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Unbeliever

QuoteIn this video, we will talk about new visual evidence of the existence of the blackhole in the middle of the Milky Way galaxy known as Sagittarius A*



https://www.youtube.com/watch?v=OpeN_kuNN0U


Detection of orbital motions near the last stable circular orbit of the
massive black hole SgrA*



I don't think many astrophysicists doubted the existence of this black hole, but it's nice to get confirmation.
God Not Found
"There is a sucker born-again every minute." - C. Spellman

Baruch

Report URL fails.  The video is good.  This is probably what they are talking about having evidence of ...

There is a zone where you can't not spiral into the black hole.  But besides that, there is a zone where you can't not orbit the black hole.  This is the ergosphere.

https://en.wikipedia.org/wiki/Kerr_metric

This article shows the various zones of rotation black holes.  It is more complicated than the simplistic non-rotating black hole model most people are familiar with.
Ha’át’íísh baa naniná?
Azee’ Å,a’ish nanídį́į́h?
Táadoo ánít’iní.
What are you doing?
Are you taking any medications?
Don't do that.

Gawdzilla Sama

We 'new atheists' have a reputation for being militant, but make no mistake  we didn't start this war. If you want to place blame put it on the the religious zealots who have been poisoning the minds of the  young for a long long time."
PZ Myers

PopeyesPappy

It is nice to have "another" line of evidence to support the existence of Sagittarius A, but the claim made in the video that this was the first observational evidence is incorrect. Scientists at UCLA and the Max Planck Institute have been tracking the orbits of several stars around Sagittarius A for more than two decades. That's long enough to track S0-2 for more than 2 full orbits and calculate the orbits of S0-16 and S0-19 with a high degree of certainty. Those orbits can't be explained by anything but a supermassive black hole.



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drunkenshoe

May be they mean the first detailed observation? Because I saw other links.
"science is not about building a body of known 'facts'. ıt is a method for asking awkward questions and subjecting them to a reality-check, thus avoiding the human tendency to believe whatever makes us feel good." - tp

Baruch

Quote from: drunkenshoe on November 13, 2018, 08:33:19 AM
May be they mean the first detailed observation? Because I saw other links.

No, scientists have to talk like Trump about their current brain child ... to get more funding.
Ha’át’íísh baa naniná?
Azee’ Å,a’ish nanídį́į́h?
Táadoo ánít’iní.
What are you doing?
Are you taking any medications?
Don't do that.

Unbeliever

God Not Found
"There is a sucker born-again every minute." - C. Spellman

Baruch

Quote from: Unbeliever on November 13, 2018, 01:22:51 PM

Um...carefully?

Ultimate sci-fi roach motel ... Disney Inc checks in (remember that movie?) but doesn't check out.
Ha’át’íísh baa naniná?
Azee’ Å,a’ish nanídį́į́h?
Táadoo ánít’iní.
What are you doing?
Are you taking any medications?
Don't do that.

Unbeliever

God Not Found
"There is a sucker born-again every minute." - C. Spellman

Baruch

Ha’át’íísh baa naniná?
Azee’ Å,a’ish nanídį́į́h?
Táadoo ánít’iní.
What are you doing?
Are you taking any medications?
Don't do that.

Gawdzilla Sama

Quote from: Unbeliever on November 13, 2018, 01:25:24 PM
It seems there may be a whole swarm of black holes near the galactic center:

https://www.space.com/40196-black-hole-swarm-milky-way-heart.html
Mutual gravitational attraction? The SMBH is an attention freak?
We 'new atheists' have a reputation for being militant, but make no mistake  we didn't start this war. If you want to place blame put it on the the religious zealots who have been poisoning the minds of the  young for a long long time."
PZ Myers

Unbeliever

God Not Found
"There is a sucker born-again every minute." - C. Spellman