Event Horizon Telescope

AndrewMeronek · by **AndrewMeronek** » 2019-04-09 1:26 p.m.

I think it's pretty neat to get the first image of Sagittarius A* April 10. Here's a few videos I chased down that I think are nicely informative (so far):

<YOUTUBE id="BIvezCVcsYs">https://www.youtube.com/watch?v=BIvezCVcsYs</YOUTUBE>

<YOUTUBE id="dQz1PZ7IhHQ">https://www.youtube.com/watch?v=dQz1PZ7IhHQ</YOUTUBE>

<YOUTUBE id="zUyH3XhpLTo">https://www.youtube.com/watch?v=zUyH3XhpLTo</YOUTUBE>

AndrewMeronek · by **AndrewMeronek** » 2019-04-09 1:28 p.m.

Aside from the result itself, the kind of engineering and resources needed to achieve this is IMHO *very* impressive.

harrisonreed · by **harrisonreed** » 2019-04-10 9:24 a.m.

harrisonreed · by **harrisonreed** » 2019-04-10 9:29 a.m.

As predicted, it has a bright edge as the gas comes towards us.

norbie2018 · by **norbie2018** » 2019-04-10 9:49 a.m.

Is that the actual image?

harrisonreed · by **harrisonreed** » 2019-04-10 10:44 a.m.

Yeah. It's of M87's black hole. I thought it was going to be a picture of Sag A. But this is an order of magnitude more massive. I guess the acretion disk in the image and possibly the circular event horizon is larger than the solar system.

The actual black hole is not imaged of course, because it has no dimensions and is deep within that black circle.

AndrewMeronek · by **AndrewMeronek** » 2019-04-10 11:52 a.m.

Pretty sweet. Looks like (at least right now) papers on this are available without a paywall:

https://iopscience.iop.org/issue/2041-8205/875/1

Doug_Elliott · by **Doug_Elliott** » 2019-04-10 12:12 p.m.

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