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Author Topic: What Does A Black Hole Look Like?  (Read 4753 times)

Telecaster

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What Does A Black Hole Look Like?
« on: April 04, 2019, 05:00:10 pm »

In fact a black hole probably doesn't look like anything…but the area surrounding its event horizon may look very interesting indeed. The Event Horizon telescope, a multinational coordinated group of radio spectrum telescopes, attempted two years ago to create images of two black holes, one at the center of (relatively) nearby galaxy M87 and the other at our Milky Way's center. On April 10th they'll be announcing results of the attempts, and presumably also showing an image or two. The fact that they've scheduled a press conference suggests they've got something cool up their sleeve…but we shall see. (The folks involved are annoyingly keeping their lips tightly zipped.)

A short piece: http://www.astronomy.com/news/2019/04/the-event-horizon-telescope-may-soon-release-first-ever-black-hole-image?

-Dave-

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Eric Myrvaagnes

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Re: What Does A Black Hole Look Like?
« Reply #1 on: April 04, 2019, 05:40:15 pm »

Maybe the announcement will be that Amazon is offering to sell black holes.   :D
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LesPalenik

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Re: What Does A Black Hole Look Like?
« Reply #2 on: April 04, 2019, 06:26:55 pm »

When taking spherical panoramas in a small room, you end up with a black hole (nadir) in the bottom centre of the image (where was  the tripod). If you take a second panorama just one step to either the side, you get another black hole, this time in another position. Combine the two images and the black hole disappears.
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Alan Klein

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Re: What Does A Black Hole Look Like?
« Reply #3 on: April 04, 2019, 10:50:01 pm »

When taking spherical panoramas in a small room, you end up with a black hole (nadir) in the bottom centre of the image (where was  the tripod). If you take a second panorama just one step to either the side, you get another black hole, this time in another position. Combine the two images and the black hole disappears.
Oh so that's how they do it.  Thanks.

LesPalenik

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Re: What Does A Black Hole Look Like?
« Reply #4 on: April 04, 2019, 11:01:44 pm »

Oh so that's how they do it.  Thanks.

Well, someone may come up with another black hole example, but I wanted to keep the discussion clean.
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Rob C

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Re: What Does A Black Hole Look Like?
« Reply #5 on: April 06, 2019, 02:53:54 pm »

Well, someone may come up with another black hole example, but I wanted to keep the discussion clean.


What's unclean about a bottomless pit?

Rob C

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Re: What Does A Black Hole Look Like?
« Reply #6 on: April 06, 2019, 02:56:59 pm »

To answer the OP's question, it seems highly likely that a black hole looks pretty much like any other black hole: black.

Eric Myrvaagnes

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Re: What Does A Black Hole Look Like?
« Reply #7 on: April 06, 2019, 08:22:36 pm »

To answer the OP's question, it seems highly likely that a black hole looks pretty much like any other black hole: black.
+1.
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Robert Roaldi

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Re: What Does A Black Hole Look Like?
« Reply #8 on: April 09, 2019, 12:48:19 pm »

To answer the OP's question, it seems highly likely that a black hole looks pretty much like any other black hole: black.

Not to physicists.
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Rob C

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Re: What Does A Black Hole Look Like?
« Reply #9 on: April 09, 2019, 01:43:51 pm »

Not to physicists.


Obviously not, Robert. To them everything looks like a possible new Law for the discovering and eponymous naming.

Rob

Eric Myrvaagnes

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Re: What Does A Black Hole Look Like?
« Reply #10 on: April 09, 2019, 05:34:11 pm »

I saw a news item today that suggested they will be posting the first photograph of a black hole tomorrow.
I guess they are waiting for the picture to come back from the drug store.
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Robert Roaldi

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Re: What Does A Black Hole Look Like?
« Reply #11 on: April 10, 2019, 07:31:03 am »


Obviously not, Robert. To them everything looks like a possible new Law for the discovering and eponymous naming.

Rob

That's right, they're in for the glory.   :)
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rabanito

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Re: What Does A Black Hole Look Like?
« Reply #12 on: April 10, 2019, 08:17:11 am »

Most importantly, for such a photoshoot they should use the ETTR method.

Hear! Hear!
All my photos of black holes are underexposed!
 ;)
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LesPalenik

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Re: What Does A Black Hole Look Like?
« Reply #13 on: April 10, 2019, 08:18:30 am »

Black or not, most importantly, for such a photoshoot they should use the ETTR method.
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rabanito

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Re: What Does A Black Hole Look Like?
« Reply #14 on: April 10, 2019, 08:28:39 am »

Black or not, most importantly, for such a photoshoot they should use the ETTR method.

Just a well meant joke ;)
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KLaban

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Re: What Does A Black Hole Look Like?
« Reply #15 on: April 10, 2019, 09:43:26 am »

Paulo Bizarro

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Re: What Does A Black Hole Look Like?
« Reply #16 on: April 10, 2019, 11:25:28 am »

What a significant milestone, well done to the team.

Rob C

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Re: What Does A Black Hole Look Like?
« Reply #17 on: April 10, 2019, 03:04:38 pm »

The photo



Disclaimer: I frequently achieve black hole images when I use my catadioptric 500mm Nikkor.

KLaban

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Re: What Does A Black Hole Look Like?
« Reply #18 on: April 11, 2019, 03:34:59 am »

A mix-up between the black hole photo and one of the scientist's snaps of their breakfast bagel, perhaps?

jeremyrh

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Re: What Does A Black Hole Look Like?
« Reply #19 on: April 11, 2019, 04:07:02 am »

That's right, they're in for the glory.   :)

Some are, but who's to begrudge them? There's precious little money in being a scientist.
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