Astronomers using the newly commissioned James Webb Space Telescope take a spectrum of a bright galaxy at redshift z=8,

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Astronomers using the newly commissioned James Webb Space Telescope take a spectrum of a bright galaxy at redshift z=8,

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Astronomers Using The Newly Commissioned James Webb Space Telescope Take A Spectrum Of A Bright Galaxy At Redshift Z 8 1
Astronomers Using The Newly Commissioned James Webb Space Telescope Take A Spectrum Of A Bright Galaxy At Redshift Z 8 1 (39.24 KiB) Viewed 182 times
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Astronomers using the newly commissioned James Webb Space Telescope take a spectrum of a bright galaxy at redshift z=8, and they infer a stellar population age of 1.1±0.1 Gyr. (a) What are the implications of the measurement in the context of the current concordance cosmological model? (b) What would you conclude if the measurement gives an age of 0.910.3 Gyr instead? The Event Horizon Telescope observes at approximately 1.3mm wavelength (230GHz). (c) What is the separation between elements of the interferometer needed to resolve the sphere of influence of a black hole of 5 x 106 Mo solar masses at the distance of Andromeda (a distance 0.89Mpc)? (d) Is this measurement feasible using radio telescopes on Earth and why?
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