Temperature of CMBR compared to galaxies in general

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SUMMARY

The temperature of the Cosmic Microwave Background Radiation (CMBR) is significantly higher than that of galaxies, with the contribution of galaxies to CMBR readings being one to two magnitudes lower than that of CMB photons. Galaxies, while they do emit radiation, have a comparatively low temperature that does not substantially affect CMBR measurements. The CMBR predominantly passes through galaxies without significant interaction, making the temperature of galaxies negligible in the context of CMBR analysis. For further insights, refer to the paper discussed in the forum.

PREREQUISITES
  • Understanding of Cosmic Microwave Background Radiation (CMBR)
  • Familiarity with astrophysical temperature scales
  • Knowledge of galaxy formation and radiation emission
  • Basic principles of cosmology and observational astronomy
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  • Research the impact of galaxy temperature on CMBR readings
  • Study the interaction of CMBR with cosmic structures
  • Explore the methodologies for measuring CMBR and galaxy temperatures
  • Investigate the implications of CMBR in cosmological models
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Astronomers, astrophysicists, and students studying cosmology who are interested in the relationship between cosmic background radiation and galaxy temperatures.

Herbascious J
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I'm curious about how the temperature of the CMBR compares to the light and temperature of galaxies in general. Basically, I'm wondering how 'hot' are galaxies and how do they contribute to the CMBR readings. Does the temperature of galaxies compare on some scale? Do we have to account for the direct temperature of galaxies, and subtract it from the CMBR somehow? I guess my feeling is, is that there are many galaxies, lying on many lines of sight. I can only assume they must have some temperature reading, although quite cool from far away. Also, does the radiation of the CMBR simply pass through the galaxies, or do they effect the readings somehow. Thank you in advance.
 
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Thank you Chronos. That paper was excellent, and answered my question perfectly. Much appreciated.
 

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