nLab
cosmic microwave background radiation

Context

Physics

physics, mathematical physics, philosophy of physics

Surveys, textbooks and lecture notes


theory (physics), model (physics)

experiment, measurement, computable physics

Contents

Idea

(…)

Properties

Hydrogen line

It has been argued (Higan-Rees 79) that observation of a absorption at the 21cm hydrogen line in the cosmic microwave background would be a signal from the time when the first stars? formed and ignited, a cosmological epoch not otherwise accessible to observation. A claim of detection of this signal by the EDGES experiment appeared in BRMMM 18.

References

General

See also the references at cosmic inflation.

On the hydron line

  • C. J. Hogan, Martin Rees, Spectral appearance of non-uniform gas at high zz, Monthly Notices of the Royal Astronomical Society, Volume 188, Issue 4, 1 October 1979, Pages 791–798 (doi:10.1093/mnras/188.4.791)

A claim of detection of the cosmological signal by the EDGES experiment is due to

  • Judd D. Bowman, Alan E. E. Rogers, Raul A. Monsalve, Thomas J. Mozdzen, Nivedita Mahesh, An absorption profile centred at 78 megahertz in the sky-averaged spectrum, Nature volume 555, pages 67–70 (01 March 2018) (doi:10.1038/nature25792)

Discussion of this claim incluces

Last revised on April 12, 2018 at 10:07:15. See the history of this page for a list of all contributions to it.