G-waves (Gravitational wave)
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Gravitational Waves
Transcript of G-waves (Gravitational wave)
Gravitational Waves
Advanced LIGO L : Laser
I : Interferometer
G : Gravitational wave
O : Observatory
WHAT IS GRAVITATIONAL
WAVE?• Ripples in space-time
that propagate out atthe speed of light
• Colossal cosmiccollisions and stellarexplosions can rattlespace-time itself
• Einstein first predictedit in his General Theoryof Relativity.
• After 100 years, hisprediction came true. Itwas detected in 14th
September, 2015.
WHAT ARE IT’S SOURCES?
What is an Interferometer?
• Interferometers are
investigative tools used
in many fields of science
and engineering.
• They are called
interferometers because
they work by merging
two or more sources of
light to create an
interference pattern,
which can be measured
and analyzed; hence
"Interfere-ometer"
HOW ARE THEY DETECTED?
WHAT’S SO SPECIAL ABOUT IT?
Big Bang 13 billion years ago
To see something 13 billion light years away, we must
capture light that began its journey 13 billion years ago.
For the first 13,800 years of the universe, light could
not break free
It was DENSE and MURKY.
Gravitational waves were there.
We can analyse the property of the early universe.
THANK YOU
