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domenech_ERN2021
Guillem Domenech
Created on September 14, 2021
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Check more details on: domenechcosmo.netlify.com
Finding out what our baby universe may have been up to
START
Guillem Domenech,INFN Padova
GA. 754496
All used icons are made by Freepik from www.flaticon.com
Roadmap
2. Universe's life
1. Meet the obserable universe
3. Baby universe shakes spacetime
4. A new window to the universe
unexplored
Meet the observable universe
Light takes a while to reach us. So the further we observe, the younger the universe
Age: 14 bilion years old
Size: 14 Gpc
Hobbies: hide things
(1parsec = 3 light-years)
You are here now
Andromeda as it was 2 million years ago
The first light from 14 billion years ago
Image by Pablo Carlos Budassi from Wikipedia
Senior?
Adult
Universe's life
Teen
Child
Toddler
Baby
Birth?
ridicously tiny fraction of second
1 second
400k yr
1 bilion yr
14 bilion yr
size & age of observable universe
Evidence
Unexplored
Currently explored
The question:
Toddler
If light can reach only so far...
Baby
How can we learn of the infant universe?
ridicously tiny fraction of second
1 second
400k yr
1 bilion yr
14 bilion yr
size & age of universe
Evidence
Unexplored
Currently explored
Gravitational waves!
The answer:
Good: they barely interact with matter
Bad: you need to hit spacetime very hard!
What are cosmic hammers?
Animation made with Mathematica
Baby universe shakes spacetime
Was the baby universe a...
Were quantum fluctuations in the baby universe...
Bad boy?
Violent?
Smooth?
Good boy?
Images drawn with Mathematica
Baby universe shakes spacetime
Gravitational waves and Primordial black holes
Black holes formed in the toddler universe from big fluctuations created in the baby universe
+ INFO
Note: Not like stellar black holes!
Gravitational wave detector network
In the next decades we will be monitoring the universe with several gravitational waves detectors.
Operating
Proposed
Approved
Gravitational waves will tell us if our baby universe is hiding something big...
Take home message
More details on: domenechcosmo.netlify.com