# Neutrinos and Warm Dark Matter from a cosmology perspective

- Institution: CERN
- Department: EP Seminar
- Speaker: Nathalie Palanque-Delabrouille
- Year: 2019
- Language: English
- Subjects: Astronomy and space
- Source: [CERN](https://videos.cern.ch/record/3010690)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

The Sloan Digital Sky Survey (SDSS) has been mapping the sky for almost a decade, providing crucial information on the dark universe through measurements of BAO (baryon acoustic oscillations) and RSD (redshift space distortions). As part of the SDSS BOSS and eBOSS projects, the Lyman-alpha forest survey is a rich source of information. Because it gives access to small scales (tens of Mpc), it allows one to probe the impact of neutrino mass and warm dark matter on the clustering of matter.

I will briefly recall the major goals of SDSS and introduce the quasar survey where the Lyman-alpha forest is measured. I will then present one of the strongest constraints on neutrino mass, obtained from a cosmology perspective using a combination of CMB and Lyman-alpha data. Finally, I will show how the study of clustering in the Lyman-alpha forest can also lead to competitive constraints on warm dark matter and on models of keV sterile neutrinos. These results will be placed into perspective with the upcoming DESI survey. .

0:00:00 Slide 1

0:02:03 Slide 2

0:02:55 Slide 3

0:04:28 Slide 4

0:05:12 Slide 5

0:06:04 Slide 6

0:06:46 Slide 7

0:07:18 Slide 8

0:08:07 Slide 9

0:08:36 Slide 10

0:09:56 Slide 11

0:11:25 Slide 12

0:12:43 Slide 13

0:13:13 Slide 14

0:14:05 Slide 15

0:14:10 Slide 16

0:16:20 Slide 17

0:17:02 Slide 18

0:17:34 Slide 19

0:18:27 Slide 20

0:18:35 Slide 21

0:20:19 Slide 22

0:21:22 Slide 23

0:22:46 Slide 24

0:23:17 Slide 25

0:23:29 Slide 26

0:24:13 Slide 27

0:24:57 Slide 28

0:25:41 Slide 29

0:26:14 Slide 30

0:27:46 Slide 31

0:30:00 Slide 32

0:30:55 Slide 33

0:32:16 Slide 34

0:32:37 Slide 35

0:34:52 Slide 36

0:37:14 Slide 37

0:37:37 Slide 38

0:38:37 Slide 39

0:39:01 Slide 40

0:39:33 Slide 41

0:39:53 Slide 42

0:41:04 Slide 43

0:42:47 Slide 44

0:44:01 Slide 45

0:44:12 Slide 46

0:44:48 Slide 47

0:45:08 Slide 48

0:45:15 Slide 49

0:45:45 Slide 50

0:47:25 Slide 51

0:48:05 Slide 52

0:49:38 Slide 53

0:50:39 Slide 54…

## Lectures

1. [Neutrinos and Warm Dark Matter from a cosmology perspective](https://invisiblenetwork.ai/learn/cern/3010690/e9e998217968), 1 h 7 min (CERN's player)