# EC(H)Os in the dark: Gravitational Wave backgrounds from colliding ECOs at atom interferometers

- Institution: CERN
- Department: Eucapt Conferences
- Speaker: Hannah Banks
- Year: 2023
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3005179)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

Long baseline atom interferometers (LBAI) offer an exciting opportunity to explore mid-frequency gravitational waves. In this talk I will advocate for targeting the total 'gravitational wave background', surveying the landscape of possible contributions within this frequency band. I will demonstrate that the cumulative signal from the inspirals of the LIGO-Virgo stellar-mass binaries is well within reach of typical terrestrial LBAI and may have much to reveal about the Universe. Finally, I will show that populations of dark sector exotic compact objects harbouring just a tiny fraction of the dark energy density, could generate signatures unique to mid- and low-frequency gravitational wave detectors, providing a novel means to probe complexity in the dark sector..

0:00:00 Slide 1

0:00:13 Slide 2

0:00:26 Slide 3

0:00:38 Slide 4

0:00:51 Slide 5

0:01:03 Slide 6

0:01:16 Slide 7

0:01:28 Slide 8

0:01:41 Slide 9

0:01:53 Slide 10

0:02:06 Slide 11

0:02:18 Slide 12

0:02:31 Slide 13

0:02:43 Slide 14

0:02:56 Slide 15

0:03:08 Slide 16

0:03:21 Slide 17

0:03:33 Slide 18

0:03:46 Slide 19

0:03:58 Slide 20

0:04:11 Slide 21

0:04:23 Slide 22

0:04:36 Slide 23

0:04:48 Slide 24

0:05:01 Slide 25

0:05:13 Slide 26

0:05:26 Slide 27

0:05:38 Slide 28

0:05:51 Slide 29

0:06:03 Slide 30

## Lectures

1. [EC(H)Os in the dark: Gravitational Wave backgrounds from colliding ECOs at atom interferometers](https://invisiblenetwork.ai/learn/cern/3005179/893b39c7dca5), 7 min (CERN's player)