Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Revisiting the cosmological bias due to local gravitational redshifts   A recent article by Wojtak {\it et al} (arXiv:1504.00718) pointed out that
the local gravitational redshift, despite its smallness ($\sim 10^{-5}$), can
have a noticeable ($\sim 1\%$) systematic effect on our cosmological parameter
measurements. The authors studied a few extended cosmological models (nonflat
$\Lambda$CDM, $w$CDM, and $w_0$-$w_a$CDM) with a mock supernova data set. We
repeat this calculation and find that the $\sim 1\%$ biases are due to strong
degeneracy between cosmological parameters. When cosmic microwave background
(CMB) data are added to break the degeneracy, the biases due to local
gravitational redshift are negligible ($\lesssim 0.1 \sigma$).

13
The categories of this paper are: quant-ph
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
1
The categories of this paper are: cs