Here's an animated explanation of the process by the Event Horizon Telescope. https://youtu.be/hMsNd1W_lmE
Unveiling the first-ever image of a black hole [video]
141–150 of 525 posts
Re: Unveiling the first-ever image of a black hole [video]
#142Earlier quoted context omitted.
That showmanship counts. I don’t believe HN would argue with me if I said “a strong sales group can make or break a company”. Why is it unfashionable to suggest that, in the marketplace of ideas, with an announcement of this magnitude, this exciting, this “sexy”, the presentation of the announcement would benefit from being delivered in a likewise suitable atmosphere. At night, as an event, in a cool warehouse with c…
Apple always have their unveilings in the morning pacific time.
Ha. My bad. Thanks for correcting. I always streamed after the fact. Prob because they were early.
Re: Unveiling the first-ever image of a black hole [video]
#143The EU is finally learning from the US when it comes making a lot of fanfare for discoveries and other inventions.
Too bad they don't present it well. I just see self congratulating politicians and officials on some youtube stream. Telling that it's a US organization that hosts the actual picture. esa.int and eso.org seem to be down actually.
Both ESO and the NFS hosts the images, don't know what gave you any other impression.
And while the EC stream was pretty bad, at least they let you skip back in the stream and left it up after the presentation ended. The NFS stream wouldn't allow you to go back (useful if you joined late) while it was up.
Personally I liked the ALMA stream best, but it's down now :(
Re: Unveiling the first-ever image of a black hole [video]
#144So much higher res than I thought (I was expecting a 3x3px black and white). Does anyone know if this is aggregated over a long time so it's unlikely to improve with more observation? And what is limiting the resolution at this point?
One thing missing from @petschge's reply: adding more telescopes! This will not improve the imaging the smallest possible features, but will make features larger (disk and / or jet components) more prominent. The more telescope pairs with different distance between them are added, the more complete the picture will get - up to a limit of having a single antenna roughly the size of Earth. Furthermore, adding more tele…
Very good point. I was too much focused on resolution. Adding more telescopes would indeed give a better picture of large structures (most are cropped out of the current view because they are not well imaged and you would mostly see artifacts from the image reconstruction) and improve dynamic range, i.e. allow to see things much fainter than the brightest spot in the image.
Re: Unveiling the first-ever image of a black hole [video]
#145Higher resolution official release seems to be: https://www.nsf.gov/news/special_reports/blackholes/download...
The article linking to that image: https://nsf.gov/news/news_summ.jsp?cntn_id=298276
Re: Unveiling the first-ever image of a black hole [video]
#146Earlier quoted context omitted.
I think you've got a typo here: points should be 0-dimensional.
Are you sure it's a typo? https://physics.stackexchange.com/a/194947 (I'm not a physicist.)
I believe the previous poster is referring to a typo following from this:
>A black hole itself (the singularity) is 1 dimensional - a single infinitesimal point.
In Euclidean geometry,
A cube is 3 dimensions.
A plane is 2 dimensions.
A line is 1 dimension.
A point is ...
Re: Unveiling the first-ever image of a black hole [video]
#147Re: Unveiling the first-ever image of a black hole [video]
#148What a time to be alive! I wish Hawking got to see it.
Re: Unveiling the first-ever image of a black hole [video]
#149Does anybody noticed that there are two brighter areas (not just one) in bottom part of the image.
One at approx 8PM and one at approx 5-6PM (if seen as clock)
Re: Unveiling the first-ever image of a black hole [video]
#150Is this what we would see with the naked eye if we were close enough to the black hole? Or would we see nothing, because at this distance we would be dead (or the universe ended all around us)?
This image is a representation of radio observations. What we would see in the visible part of the spectrum would be different but the structure would likely be similar.