TCMB at z = 0.89 (S. Muller et al.)
- Details
- Published on 27 February 2013
Vol. 551
In section 3. Cosmology
A precise and accurate determination of the cosmic microwave background temperature at z = 0.89
Gravitational lenses have a variety of uses. One of the more amusing
tests of modern cosmological theory has been the use of
absorption lines in the lensing galaxy to measure the temperature
of the microwave background at high red shift. An example of
this is the article by Muller et al. highlighted in this issue
where they measure the background temperature at z=0.89 against
the continuum of a background quasar. Perhaps disappointingly,
the measurement is consistent to within a couple of percent
with expectations.