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