[ExI] First Picture of a Black Hole!

[Tomaz Kristan]

>  Why is that important? Plenty of things can cause detectable
gravitational lensing

Because we MIGHT see a very enlarged star there. Like through a natural
magnifying lens.

On Fri, Apr 12, 2019 at 2:51 PM <spike at rainier66.com> wrote:

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> *From:* spike at rainier66.com <spike at rainier66.com>
> *Sent:* Friday, April 12, 2019 5:43 AM
> *To:* 'Tomaz Kristan' <protokol2020 at gmail.com>; 'ExI chat list' <
> extropy-chat at lists.extropy.org>
> *Cc:* spike at rainier66.com
> *Subject:* RE: [ExI] First Picture of a Black Hole!
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> *From:* Tomaz Kristan <protokol2020 at gmail.com>
> *Subject:* Re: [ExI] First Picture of a Black Hole!
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> >…What can be even cooler than the accretion disk around a black hole?
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> >…No accretion disk around a black hole. Instead some stars behind that
> black hole. Their images pretty much gravity lensed by the black hole.
> That's why I insist on to see Sagittarius.
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> Ja, because the accretion disk blocks the faint gravity lensed images of
> the stuff behind it.
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> I am struggling to understand why an accretion disk looks like this.  The
> whole thing is baffling, defying my intuition violently.  For starters, I
> don’t see why so much of the material is approximately in one plane.  My
> best guess is that it is mostly from one star, then as other material in
> other orbit planes comes down, it collides with material primarily in that
> very visible plane.
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> Oh this is so cool.  I am a total data addict: I have had that one monster
> hit, now I want another one.
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> spike
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> Oh boy, retract, I realized what I am seeing and answered my own question:
> the image isn’t what I was thinking.  It occurred to me that there is
> material in various orbits.  However because of lensing, the light from the
> accretion disk will always appear circular from every point of view
> everywhere.  Oh I have so much to learn.
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> spike
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-- 
https://protokol2020.wordpress.com/
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