What is the relationship between temperature and redshift?

In summary, the relationship between temperature and redshift is that as the temperature of a celestial object increases, its redshift also increases. This is due to the Doppler effect, which causes the wavelengths of light emitted by the object to shift towards the red end of the spectrum. This phenomenon is observed in various astronomical objects, such as stars, galaxies, and quasars, and is used to determine their distances and velocities. Additionally, the redshift of cosmic microwave background radiation is a key piece of evidence for the Big Bang theory, as it indicates the expansion of the universe over time and a corresponding decrease in its temperature.
  • #1
kuahji
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I was just curious as to if there are any graphs or data available to see a more detailed outline of the temperature vs. redshift or temperature vs. time available in any published papers, books, or even online.
 
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  • #2
How would you make such a definitive measurement in a distant galaxy?
 
  • #3
See http://arxiv.org/abs/0909.2815" and references therein. But I didn't find graphs.
 
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  • #4
Thanks for the replies, I was thinking more in general between the era of recombination & reionization (roughly redshifts between z~1500 & z~10, but more concerned about recombination). Although such measurements would be difficult, I'd think it would be strange not to have any theoretical models, that even briefly outline this.
 
  • #5
We do know the temperature of the surface of last scattering - about 3000K.
 

FAQ: What is the relationship between temperature and redshift?

What is the relationship between temperature and redshift?

The relationship between temperature and redshift is that as the universe expands, the temperature of cosmic microwave background radiation decreases, resulting in a redshift. This is due to the expansion of space causing the wavelengths of light to stretch, which shifts the light towards the red end of the spectrum.

How does the temperature of the universe change with redshift?

The temperature of the universe is inversely proportional to the redshift. As the universe expands and the redshift increases, the temperature decreases. This is known as the cosmological redshift and is a result of the expansion of the universe since the Big Bang.

What is the significance of temperature vs. redshift in cosmology?

Temperature vs. redshift is important in cosmology as it provides evidence for the Big Bang theory. The observed decrease in temperature and increase in redshift aligns with the prediction of the expanding universe and supports the idea that the universe began with a hot, dense state.

How is the temperature of the cosmic microwave background radiation measured?

The temperature of the cosmic microwave background radiation (CMB) is measured using specialized instruments such as satellites and telescopes. These instruments detect the radiation in the microwave range and measure its intensity. By analyzing the intensity, scientists can determine the temperature of the CMB.

Can temperature vs. redshift be used to determine the age of the universe?

Yes, temperature vs. redshift can be used to estimate the age of the universe. By analyzing the CMB and its redshift, scientists can calculate the expansion rate of the universe and determine how long it has been expanding. This, along with other cosmological data, allows for estimation of the age of the universe, which is currently estimated to be around 13.8 billion years old.

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