Derivation of the cosmological number density in depth from V/Vm distribution

Details Derivation of the cosmological number density in depth from V/Vm distribution Derivation of the cosmological number density in depth from V/Vm distribution

2009-03-11

arxiv.org/abs/0903.1903v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

5 pages, 3 tables, For Proceedings of 27th Meeting of Astronomical Scociety of India, 18-20th February 2009, Indian Institute

Scientific paper

The classical cosmological V/Vm-test is introduced. Use of the differential distribution p(V/Vm) of the V/Vm-variable rather than just the mean leads directly to the cosmological number density without any need for assumptions about the cosmological evolution of the underlying (quasar) population. Calculation of this number density n(z) from p(V/Vm) is illustrated using the best sample that was available in 1981, when this method was developed. This sample of 76 quasars is clearly too small for any meaningful results. The method will be later applied to a much larger cosmological sample to infer the cosmological number density n(z) as a function of the depth z. Keywords: V/Vm . luminosity volume . cosmological number density . V/Vm distribution

Affiliated with

Also associated with

No associations

Rating

Derivation of the cosmological number density in depth from V/Vm distribution 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 Derivation of the cosmological number density in depth from V/Vm distribution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Derivation of the cosmological number density in depth from V/Vm distribution will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-123471