Long-term future of extragalactic astronomy

@article{Loeb2002LongtermFO,
  title={Long-term future of extragalactic astronomy},
  author={A. Loeb},
  journal={Physical Review D},
  year={2002},
  volume={65},
  pages={047301}
}
  • A. Loeb
  • Published 2002
  • Physics
  • Physical Review D
If the current energy density of the universe is indeed dominated by a cosmological constant, then high-redshift sources will remain visible to us only until they reach some finite age in their rest-frame. The radiation emitted beyond that age will never reach us due to the acceleration of the cosmic expansion rate, and so we will never know what these sources look like as they become older. As a source image freezes on a particular time frame along its evolution, its luminosity distance and… Expand
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