Timeline for Calculating the present comoving distance or light travel distance of distant objects when only one value is given?
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 13, 2021 at 11:02 | vote | accept | Jim Daniels | ||
| Oct 12, 2021 at 20:40 | comment | added | Jim Daniels | Great, thanks again. It seems Wikipedia and many sources have incorrect comoving distances for the LGQ's as their redshifts around 1.2 giving a comoving distance around 12 Gly. | |
| Oct 12, 2021 at 20:26 | comment | added | benrg | @JimDaniels Try $H_0=67.74$, $\text{Omega}_\text{M}=0.3089$ (and click "Flat", or also set $\text{Omega}_\text{vac}=0.6911$ and click "General"). Those are Planck 2015 values via Wikipedia. I don't know that they are necessarily better values, though. Ned Wright chose the default values, and he knows more than I do. The calculator was updated fairly recently (2018). | |
| Oct 12, 2021 at 20:17 | comment | added | Jim Daniels | Brilliant, thank you. Do I leave the other boxes alone and just change z? For a few of the large structures their redshift value in the calculator gives their stated comoving distance but some are pretty far off. | |
| Oct 12, 2021 at 19:59 | history | answered | benrg | CC BY-SA 4.0 |