A New Measurements of the Cosmic Microwave Background Radiation Temperature at z = 1.97

Details A New Measurements of the Cosmic Microwave Background Radiation Temperature at z = 1.97 A New Measurements of the Cosmic Microwave Background Radiation Temperature at z = 1.97

1996-07-28

arxiv.org/abs/astro-ph/9607145v1

Astronomy and Astrophysics

Astrophysics

20 pages with 6 figs included, also available from http://qso.as.arizona.edu/~jge/projects.html . ApJ, 1997, 472 (in press)

Scientific paper

10.1086/303426

We present detections of absorption from the ground state and excited states of C I in the z = 1.9731 damped Ly\al\ system of the QSO 0013$-$004. The excitation temperature between the J = 0 and J = 1 fine-structure levels of C I is 11.6 $\pm$ 1.0 K. We estimate other contributions to the excitation of the C I fine-structure levels, and use the population ratio of the excited state to the ground state to derive an estimate for the cosmic microwave background radiation (CMBR) temperature of T = 7.9 $\pm$ 1.0 K at 0.61 mm and z = 1.9731, which is consistent with the predicted value of T = 8.105 $\pm$ 0.030 K from the standard cosmology.

Affiliated with

Also associated with

No associations

Rating

A New Measurements of the Cosmic Microwave Background Radiation Temperature at z = 1.97 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A New Measurements of the Cosmic Microwave Background Radiation Temperature at z = 1.97, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A New Measurements of the Cosmic Microwave Background Radiation Temperature at z = 1.97 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-446322