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INDI Library v1.9.9 Released (30 Nov 2022)

Bi-monthly INDI Library released with new drivers and bug fixes.

Real Black Hole

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The image of the central black hole in Virgo Galaxy A (M87) has been just released!

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Radek Kaczorek
Astroberry Server | Orion CT8 | Askar FRA 400 | NEQ6 (hypermod) | Atik 460EX | ASI 1600 | ASI 120MM | Atik EFW2
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Last edit: 3 years 9 months ago by Radek Kaczorek.
3 years 9 months ago #37565
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Replied by Richard Roth on topic Real Black Hole

That is a very nice image. Thanks for sharing!
Regards,
Richard

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3 years 9 months ago #37567

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Replied by Gonzothegreat on topic Real Black Hole

To put the size in perspective...


source: xkcd.com/2135/
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Last edit: 3 years 9 months ago by Gonzothegreat.
3 years 9 months ago #37605
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Replied by Clive Stachon on topic Real Black Hole

I Quote someone from Sky At Night who says - "Technically they haven’t imaged the black hole as it is a singularity, what they’ve done is clearly image the event horizon just as material is super heated then falls in and disappears"
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3 years 9 months ago #37662

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Replied by Radek Kaczorek on topic Real Black Hole

This actually true. It's like imaging silhouette of a man in a backlight. Still it is a picture of a man ;-)
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Radek Kaczorek
Astroberry Server | Orion CT8 | Askar FRA 400 | NEQ6 (hypermod) | Atik 460EX | ASI 1600 | ASI 120MM | Atik EFW2
3 years 9 months ago #37668

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Replied by Wouter van Reeven on topic Real Black Hole

Also, the term black hole commonly refers to anything within the even horizon and not just the singularity.
Wouter van Reeven

ASI6200MM and 7 slot 2" filter wheel with a SkyWatcher Esprit 80 ED on a SkyWatcher HEQ5-Pro
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3 years 9 months ago #37669

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Replied by Radek Kaczorek on topic Real Black Hole

Is even horizon part of a black hole? I think it is, as it is specific to this object, also as Schwarzschild's solution to Einstein's field equations.
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Radek Kaczorek
Astroberry Server | Orion CT8 | Askar FRA 400 | NEQ6 (hypermod) | Atik 460EX | ASI 1600 | ASI 120MM | Atik EFW2
3 years 9 months ago #37671

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Replied by Wouter van Reeven on topic Real Black Hole

Well, I guess that depends on your definition. Simply put, a black hole is a region in space from which nothing can escape, not even light. The event horizon is the boundary between normal space and the black hole. Does that make it part of the black hole? It probably is. And I’d say the even horizon is an infinitesimally thin line but I may be, and probably am, wrong about that.
Wouter van Reeven

ASI6200MM and 7 slot 2" filter wheel with a SkyWatcher Esprit 80 ED on a SkyWatcher HEQ5-Pro
ASI1600MM-Pro Cooled and 5 slot 1.25" filter wheel with an 8" TS Ritchey-Chrétien on a SkyWatcher EQ6-R
3 years 9 months ago #37672

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Replied by Radek Kaczorek on topic Real Black Hole

I think you're absolutely right. In this view it's not even an image of even horizon, but particles sliding on it.
There's quite nice explanation of the topic in this video.
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Radek Kaczorek
Astroberry Server | Orion CT8 | Askar FRA 400 | NEQ6 (hypermod) | Atik 460EX | ASI 1600 | ASI 120MM | Atik EFW2
Last edit: 3 years 9 months ago by Radek Kaczorek.
3 years 9 months ago #37674

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