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I'm looking forward to JWST shots of stuff like this.
by api 4y ago
I'm looking forward to JWST shots of stuff like this.
- imglorp 4y agoYes, IR better penetrates the dust cloud hiding Sgr A*, so here's hoping.
- nuccy 4y agoThe EHT reveals the black hole shadow of about 50 micro-arcseconds [1], while JWST has resolution of about 0.1 arcsec [2], thus resolution of JWST is more than 2000 worse. It is physically impossible (regardless of the exposure time) for JWST to resolve Sgr A*. 1. https://physicsworld.com/wp-content/uploads/2022/05/First-SGR-A-results.jpg https://physicsworld.com/wp-content/uploads/2022/05/First-SG... 2. https://webb.nasa.gov/content/about/faqs/facts.html https://webb.nasa.gov/content/about/faqs/facts.html
- imglorp 4y agoInteresting, thank you.
- wthomp 4y agoUnfortunately JWST won’t come close to being able to resolve Sgr A*. They measured its diameter in micro-arcseconds, whereas JWST’s limiting resolution will be measured in 10s-100s of milli-arcseconds.
- Cthulhu_ 4y agoAnd would it even be able to see past the dust clouds and stars and stuff in front of it? I mean if they could, they could do another longer term observation like from that clip where you can see stars swishing around it.
- dotnet00 4y agoJWST is an infrared scope pretty much specifically so it can see through dust clouds.
- zekica 4y agoJWST is not large enough to have that kind of resolution. EHT collaboration has effective lens size comparable to the diameter of the earth.