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Our Galaxy's Supermassive Black Hole Has Emitted a Mysteriously Bright Flare
Science Alert ^ | 12 AUG 2019 | MICHELLE STARR

Posted on 08/12/2019 1:39:07 PM PDT by BenLurkin

The supermassive black hole at the heart of the Milky Way, Sagittarius A*, is relatively quiet. It's not an active nucleus, spewing light and heat into the space around it; most of the time, the black hole's activity is low key, with minimal fluctuations in its brightness.

When we view that radiation with a telescope using the infrared range, it translates as brightness. Normally, the brightness of Sgr A* flickers a bit like a candle, varying from minutes to hours. But when the surroundings of a black hole flare that brightly, it's a sign something may have gotten close enough to be grabbed by its gravity.

The team is busily gathering data to try and narrow it down, but there are two immediate possibilities. One is G2, an object thought to be a gas cloud that approached within 36 light-hours of Sgr A* in 2014. If it was a gas cloud, this proximity should have torn it to shreds, and parts of it devoured by the black hole - yet nothing happened.

"One of the possibilities," Do told ScienceAlert, "is that the star S0-2, when it passed close to the black hole last year, changed the way gas flows into the black hole, and so more gas is falling on it, leading it to become more variable."

More observations will take place over the coming weeks with the ground-based Keck Observatory before the galactic centre is no longer visible at night from Earth.

But many other telescopes - including Spitzer, Chandra, Swift and ALMA - were observing the galactic centre over the last few months, too. Their data could reveal different aspects of the physics of the change in brightness, and help us understand what Sgr A* is up to.

(Excerpt) Read more at sciencealert.com ...


TOPICS: Astronomy; Science
KEYWORDS: astronomy; blackhole; haltonarp; milkyway; sagittariusa; science; stringtheory
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1 posted on 08/12/2019 1:39:07 PM PDT by BenLurkin
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To: BenLurkin

Another Vogon hyperspace bypass..


2 posted on 08/12/2019 1:42:18 PM PDT by Reily
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To: BenLurkin

I guess Jeffery Epstein got his last wish and screwed a black hole...


3 posted on 08/12/2019 1:44:12 PM PDT by ImJustAnotherOkie (All I know is The I read in the papers.)
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To: ImJustAnotherOkie

Did Michelle f@rt?


4 posted on 08/12/2019 1:44:48 PM PDT by JaguarXKE (Liberalism is a cancer on our nation.)
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To: BenLurkin

It farted.


5 posted on 08/12/2019 1:45:00 PM PDT by Not A Snowbird (I trust President Trump.)
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To: 6SJ7; AdmSmith; AFPhys; Arkinsaw; allmost; aristotleman; autumnraine; bajabaja; ...
Thanks BenLurkin.

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6 posted on 08/12/2019 1:45:03 PM PDT by SunkenCiv (Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
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To: BenLurkin

Based on the headline I thought the article was going to be about Kamala Harris getting to close to the birthday cake after eating mexican food.


7 posted on 08/12/2019 1:45:13 PM PDT by Go Gordon (I gave my dog Grady a last name - Trump - because he loves tweets.)
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To: BenLurkin
One Ping Vassily.
8 posted on 08/12/2019 1:45:20 PM PDT by spokeshave (If anything, Trump is guilty of attempting to obstruct injustice.)
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To: BenLurkin

Black holes pass gas.

Who knew!


9 posted on 08/12/2019 1:45:40 PM PDT by mewzilla (Break out the mustard seeds)
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To: BenLurkin

Just John Crichton returning..


10 posted on 08/12/2019 1:47:39 PM PDT by DEPcom
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To: JaguarXKE

Now that’s taking it too far.../s


11 posted on 08/12/2019 1:48:17 PM PDT by ImJustAnotherOkie (All I know is The I read in the papers.)
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To: BenLurkin

Sorry abut that Ben! I just posted this again just after you. I will request mine be taken down. lol

Thanks for the post! :)


12 posted on 08/12/2019 1:52:51 PM PDT by Openurmind
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To: BenLurkin

13 posted on 08/12/2019 1:59:40 PM PDT by NohSpinZone (First thing we do, let's kill all the lawyers)
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To: BenLurkin

I was just reading a few days ago about possible “Galactic Superwaves”...

https://starburstfound.org/galactic-superwaves/


14 posted on 08/12/2019 2:00:18 PM PDT by Openurmind
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To: Openurmind

Sounds like a new kind of petunia...


15 posted on 08/12/2019 2:04:05 PM PDT by mewzilla (Break out the mustard seeds)
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To: Reily

It was angry.


16 posted on 08/12/2019 2:10:11 PM PDT by wally_bert (Hola. Me llamo Inspector Carlton Lassiter. Me gusta queso.)
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To: BenLurkin

“Just” = 22,000 - 23,000 years ago? This assumes that Einstein is correct.


17 posted on 08/12/2019 2:11:26 PM PDT by Ingtar (Funds Robbed from Everyone Else. F.R.E.E.)
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To: mewzilla
It's an interesting theory. And could actually correlate with past "relatively" fast heat wave cycles in our planet's Paleoclimatic glacial/inter-glacial history.


18 posted on 08/12/2019 2:14:43 PM PDT by Openurmind
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To: Ingtar

May I ask where you found the reference to “22,000 - 23,000 years ago?”. This is an interesting timeline if you look at the graphic I posted previously, but I didn’t see it in the article unless I missed it. I would like to chase it more if you don’t mind sharing.


19 posted on 08/12/2019 2:39:14 PM PDT by Openurmind
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To: Reily

I hope it’s Jesus.


20 posted on 08/12/2019 2:42:42 PM PDT by right way right (May we remain sober over mere men, for God really is our only true hope.)
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