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High Redshift Radio Galaxies
Published online by Cambridge University Press: 25 May 2016
Extract
One hundred years after G. Marconi recorded radio waves over a distance of more than 1000 m, the most sensitive radio telescopes are able to detect the radio emission from light travel distances at least 1.4 × 1023 times greater. The electromagnetic waves from these distant objects are red shifted by Δλ/λ = z > 4. It is not the mere distance of high redshift objects which is fascinating, but rather the fact that one looks back into the early history of the universe by observing them: Objects at a redshift of 4 shined at a time when the universe had reached only about 1/5 of its present age.
- Type
- Cosmological Implications
- Information
- Symposium - International Astronomical Union , Volume 175: Extragalactic Radio Sources , 1996 , pp. 571 - 576
- Copyright
- Copyright © Kluwer 1996