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Astronomers reveal first image of the black hole at the heart of our galaxy

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Re: Astronomers reveal first image of the black hole at the heart of our galaxy

#281
post #91

For those wondering if we could get sharper images with JWST, here’s the previously imaged black hole (same angular size as our own) compared to a single pixel from Hubble’s wide field camera 3: https://twitter.com/alex_parker/status/1116070667068170240?s... JWST will have smaller “pixels” but is in the same ballpark.

That's incredible science and engineering. The Reddit ask science thread said it would be akin to taking a photo of a donut on the moon. So impressive even if off by a lot.

Re: Astronomers reveal first image of the black hole at the heart of our galaxy

#282

Earlier quoted context omitted.

Criticism must bring substance as well. Sure, anyone can sit back and say “I don’t believe this, prove it better.” But without specific claims, such criticism can’t ever be answered and the conversation is not constructive or particularly scientific. One constructive approach to criticism here would be to take the documented imaging process and apply it to other data. If it produces results that don’t match existing…

I don’t know, the criticism in OP seems pretty substantive to me. I don’t know much about this subject so I can’t really weigh in on how much the post makes sense but regardless appeal to authority is essentially the opposite of modern science. That’s why nullius in verba has been a motto of science for 300+ years. On that point, scientists don’t need you to chastise people for questioning their authority online. I t…

> I don’t know, the criticism in OP seems pretty substantive to me.

That's because it's a straw man argument. As has been stated elsewhere in this thread, the OP's concerns are addressed in the actual papers, which the OP conveniently ignores.

> appeal to authority is essentially the opposite of modern science.

Well, it's a good thing they're not doing that then. An appeal to authority is when you rely on an expert's prominence in one field to justify their opinions in an unrelated domain, e.g. putting credence in a software developer's pontifications on imaging black holes just because they're good at software. "Appeal to authority" doesn't apply to actual authorities in their domain – otherwise you would never be able to call expert witness at a trial, for example.

Re: Astronomers reveal first image of the black hole at the heart of our galaxy

#283
post #91

For those wondering if we could get sharper images with JWST, here’s the previously imaged black hole (same angular size as our own) compared to a single pixel from Hubble’s wide field camera 3: https://twitter.com/alex_parker/status/1116070667068170240?s... JWST will have smaller “pixels” but is in the same ballpark.

That's incredible science and engineering. The Reddit ask science thread said it would be akin to taking a photo of a donut on the moon. So impressive even if off by a lot.

No post body was provided.

Re: Astronomers reveal first image of the black hole at the heart of our galaxy

#285
post #91

For those wondering if we could get sharper images with JWST, here’s the previously imaged black hole (same angular size as our own) compared to a single pixel from Hubble’s wide field camera 3: https://twitter.com/alex_parker/status/1116070667068170240?s... JWST will have smaller “pixels” but is in the same ballpark.

That's incredible science and engineering. The Reddit ask science thread said it would be akin to taking a photo of a donut on the moon. So impressive even if off by a lot.

That's in the article actually

Re: Astronomers reveal first image of the black hole at the heart of our galaxy

#286
post #35

> EHT team members talk about a sharpness of vision akin to being able to see a bagel on the surface of the Moon. This is truly amazing!

Scientists discover a bagel on the surface of the Moon! Search for black hole ends with a bagel hole?! [Become a paid subscriber to read the full story.]

Your second headline is straight out of a recent movie (rot13: "rirelguvat")

Re: Astronomers reveal first image of the black hole at the heart of our galaxy

#287

Earlier quoted context omitted.

Thanks for your reply! I also think it's scientifically interesting and appreciate the work. But it should be called a model or illustration, because a human could never see this with bare eyes.

A picture is not reserved for something we can see with bare eyes - an infrared camera produces a photo, we don't call that an illustration - such cameras are used in military, geology, earth mapping and agriculture, etc. Most images in industry and astronomy could never be seen with bare eyes, because our eyes can see only 1% of what our instruments can. Ofcourse each wavelength of light works a bit differently, lik…

I agree that in science, as we extend our perception with instruments, it's difficult draw the line between an image and an illustration or diagram.

I'm maybe grumpy because this relatively featureless image of relatively massaged data is presented by mainstream news as "FANTASTIC new photo of a Black Hole! WOW! It looks just like in Interstellar!"

Re: Astronomers reveal first image of the black hole at the heart of our galaxy

#288
post #276

Earlier quoted context omitted.

I cannot get over how many authors that article has.

How is that even possible? Anyone involved in the research in anyway is an author even without contributing to writing the paper with words? Perhaps that’s why.

Right, this. Plus, the paper was probably written by teams, in sections, and giving aggregated feedback.

Rather than attempt to disentangle, large physics collaborations normally have a “You are on all papers we publish while here and X years after you leave”.

Re: Astronomers reveal first image of the black hole at the heart of our galaxy

#289

Earlier quoted context omitted.

I don’t know, the criticism in OP seems pretty substantive to me. I don’t know much about this subject so I can’t really weigh in on how much the post makes sense but regardless appeal to authority is essentially the opposite of modern science. That’s why nullius in verba has been a motto of science for 300+ years. On that point, scientists don’t need you to chastise people for questioning their authority online. I t…

> I don’t know, the criticism in OP seems pretty substantive to me. That's because it's a straw man argument. As has been stated elsewhere in this thread, the OP's concerns are addressed in the actual papers, which the OP conveniently ignores. > appeal to authority is essentially the opposite of modern science. Well, it's a good thing they're not doing that then. An appeal to authority is when you rely on an expert's…

>"Appeal to authority" doesn't apply to actual authorities in their domain – otherwise you would never be able to call expert witness at a trial, for example.

Not OP but I disagree, an appeal to authority can be any authority, even those that are experts in the field. Even the most knowledgeable experts make mistakes, so appealing only to authority is not enough, granted I haven't read the paper nor have any stake in this issue, so it's possible that when the op appealed to authority they were actually trying to appeal to the arguments presented in the paper by proxy, which is fine. But a bald appeal to authority is always flawed, and expert witnesses are just a concession the law has to make to get anywhere. In the words of Richard Feynman; "Science is the belief in the ignorance of experts".

Re: Astronomers reveal first image of the black hole at the heart of our galaxy

#290
post #276

Earlier quoted context omitted.

I cannot get over how many authors that article has.

How is that even possible? Anyone involved in the research in anyway is an author even without contributing to writing the paper with words? Perhaps that’s why.

Yes, that's basically how it works (kind of like movie credits). On papers with fewer authors, there's a kind of ranking system in the order of the authors: the first author is generally the one who did the experimental work and the actual write-up, the next few may have helped with the write-up and run some of the experiments, the next may have just helped build some of the experimental setup, or otherwise had some material contribution to the research, and the last author is usually their supervisor who reviewed the paper before submission. When the list grows really large like this they usually give up at some point with trying to rank the contributions and just list the rest alphabetically.
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