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http://hdl.handle.net/20.500.12386/32065
Titolo: | The effects of massive neutrinos on the linear point of the correlation function | Autori: | Parimbelli, G. Anselmi, S. VIEL, MATTEO CARBONE, Carmelita Villaescusa-Navarro, F. Corasaniti, P. S. Rasera, Y. Sheth, R. Starkman, G. D. Zehavi, I. |
Data pubblicazione: | 2021 | Rivista: | JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | Numero: | 2021 | Fascicolo: | 1 | Da pagina:: | 009 | 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. | URI: | http://hdl.handle.net/20.500.12386/32065 | URL: | https://api.elsevier.com/content/abstract/scopus_id/85099364858 https://iopscience.iop.org/article/10.1088/1475-7516/2021/01/009 |
ISSN: | 1475-7516 | DOI: | 10.1088/1475-7516/2021/01/009 | Fulltext: | open |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
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