# Can a radius of curvature be calulated from omega-k?

1. Apr 19, 2015

### Buzz Bloom

A 2013 paper ( http://arxiv.org/pdf/1312.4854v1.pdf ) gives the following: Ωk = 0.0010 ± 0.0029. Can a value for the radius of curvature be determined from Ωk = 0.0010? If so, what is it, and what is the formula? If not, why not?

2. Apr 19, 2015

### Chalnoth

$$R_c={c \over H_0 \sqrt{|\Omega_k|}}$$