discrepancy of ns-r diagram between getdist and official plot
-
- Posts: 14
- Joined: May 12 2016
- Affiliation: HK
discrepancy of ns-r diagram between getdist and official plo
When I use the getdist to plot the ns-r diagram (base_nrun_r_plikHM_TT_lowTEB_BKP), I found that the r of solid line is almost 0.12,
While in the paper
https://arxiv.org/pdf/1502.01589.pdf
There is a similar plot, Fig.21. There, the corresponding value is around 0.1.
I am curious why there is a difference based on the same data. Can somebody explian? Thanks!!
While in the paper
https://arxiv.org/pdf/1502.01589.pdf
There is a similar plot, Fig.21. There, the corresponding value is around 0.1.
I am curious why there is a difference based on the same data. Can somebody explian? Thanks!!
-
- Posts: 1943
- Joined: September 23 2004
- Affiliation: University of Sussex
- Contact:
Re: discrepancy of ns-r diagram between getdist and official
Fig 21 does not marginalize over running.
-
- Posts: 14
- Joined: May 12 2016
- Affiliation: HK
discrepancy of ns-r diagram between getdist and official plo
Thanks!! But would you mind being more specific? What do you mean running? What should I do if I want to get a similar figure as Fig.21?
Thanks!
Thanks!
-
- Posts: 97
- Joined: March 19 2010
- Affiliation: The University of Texas at Dallas
- Contact:
discrepancy of ns-r diagram between getdist and official plo
Running refers to running of the spectral index (n_run). In the chains you used n_run was varied (and thus could be marginalized over). To produce figure 21, n_run was not varied so the constraints obtained will be slightly different.