Gravitational Wave Astronomy

Waves of the spacetime

Gravitational waves are the oscillation of space-time, propagating as a wave at the speed of light. Einstein first predicted these waves based on his own theory of gravity - The General Theory of relativity - in 1916. It took nearly 100 years before these elusive waves could be directly detected.

It was recently that two LIGO detectors in the USA first directly detected gravitational waves. The coalescing binary blackhole event GW150914 was known as three-fold discovery.
(1) Direct detection of gravitational waves.
(2) Blackholes
(3) Merger of two blackholes resulting in single Kerr blackhole

Basic Reading

Here are some of the basics of GW data analysis
Good starting point for the overall idea about GW astronomy are these three papers by Bernard F. Schutz, all available @ arXiv

Basic Detection Theory

What comes next is brief theory of detection based on Neyman-Pearson criterion, details about Fourier transform both continuous and discrete are given in the paper by Bernard F. Schutz. This is an important review from data analysis point of view. Introduction to the Analysis of Low-Frequency Gravitational Wave Data [External Link]

More Detailed Articles

Hands on Tutorials

Hands on FFT

Here are some practical hands on using python

pyBCB installation

pyCBC is a important python library for LIGO data analysis
Here are installation instructions

Hands on pyCBC

yet to come