Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-03-03
Astronomy and Astrophysics
Astrophysics
11 Pages, 1 Figure, LaTeX2e
Scientific paper
In order to answer this question, we combine ten independent astrophysical constraints in the space of the density parameters $\Omega_m$ of gravitating matter and $\Omega_{\Lambda}$ of vacuum energy. We find that $\Omega_m=0.31\pm 0.07$, $\Omega_{\Lambda}=0.63\pm 0.21$, and thus $\Omega_m + \Omega_{\Lambda}=0.94\pm 0.22$. The total $\chi^2$ is 4.1 for 8 degrees of freedom, testifying that the various systematic errors included are generous. We also determine $\Omega_m$ in the exactly flat case. Five supplementary flat-case constraints can then be included in our fit, with the result $\Omega_m=1-\Omega_{\Lambda}= 0.337\pm0.031$. It follows that the age of the Universe is $t_0 = 13.5\pm 1.3$ (0.68/h) Gyr.
Harun-or-Rashid S. M.
Roos Matts
No associations
LandOfFree
How flat is the Universe? 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 How flat is the Universe?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and How flat is the Universe? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-501177