The effects of massive neutrinos on the linear point of the correlation function
Date Issued
2021
Author(s)
Parimbelli, G.
•
Anselmi, S.
•
•
•
Villaescusa-Navarro, F.
•
Corasaniti, P. S.
•
Rasera, Y.
•
Sheth, R.
•
Starkman, G. D.
•
Zehavi, I.
Abstract
The linear point (LP), defined as the mid-point between the dip and the peak of the two-point clustering correlation function (TPCF), has been shown to be an excellent standard ruler for cosmology. In fact, it is nearly redshift-independent, being weakly sensitive to non-linearities, scale-dependent halo bias and redshift-space distortions. So far, these findings were tested assuming that neutrinos are massless; in this paper we extend the analysis to massive-neutrino cosmologies. In particular, we examine if the scale-dependent growth induced by neutrinos affects the LP position and if it is possible to detect the neutrino masses using the shift of the LP compared to the massless-neutrino case. For our purposes, we employ two sets of state-of-the-art N-body simulations with massive neutrinos. For each of them we measure the TPCF of cold dark matter (CDM) and halos and, to estimate the LP, fit the TPCF with a model-independent parametric fit in the range of scales of the Baryon Acoustic Oscillations (BAO). Overall, we find that the LP retains its features as a standard ruler even when neutrinos are massive. The cosmic distances measured with the LP can therefore be employed to constrain the neutrino mass.
Volume
2021
Issue
1
Start page
009
Issn Identifier
1475-7516
Rights
open.access
File(s)![Thumbnail Image]()
![Thumbnail Image]()
Loading...
Name
2007.10345.pdf
Description
preprint
Size
1.05 MB
Format
Adobe PDF
Checksum (MD5)
aea145744236ffa5e566c33d9f319071
Loading...
Name
Parimbelli_2021_JCAP.pdf
Description
[Administrators only]
Size
1.44 MB
Format
Adobe PDF
Checksum (MD5)
a94202949c6b98c7f6b7e75aa3e32d76