A 525 nm photon emitted by a distant galaxy is observed to be 890 nm. Estimate the redshift of the galaxy.

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A 525 nm photon emitted by a distant galaxy is observed to be 890 nm. Estimate the redshift of the galaxy.
Transcribed Image Text:A 525 nm photon emitted by a distant galaxy is observed to be 890 nm. Estimate the redshift of the galaxy.
Expert Solution
Concept and Principle:
  • Redshift takes place when the source of electromagnetic radiation moves away from the observer. This shifts the wavelength to the red side and will decrease the frequency.

 

  • Redshift can be calculated from wavelength using the following formula,

z=λobsλemitλemit

Here λobs is the observed wavelength and λemit is the emitted wavelength.

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