Cosmology from gravitational waves

How do gravitational waves affect the universe?
Gravitational waves distort spacetime: they change the distances between large, free objects..
What cosmic bodies are the source of gravitational waves?
Compact binary inspiral gravitational waves are produced by orbiting pairs of massive and dense ("compact") objects like white dwarf stars, black holes, and neutron stars.
There are three subclasses of "compact binary" systems in this category: Binary Neutron Star (BNS) - two neutron stars orbiting each other..
What do gravitational waves tell us about the universe?
Gravitational waves could soon provide measure of universe's expansion.
LIGO Detects Fierce Collision of Neutron Stars for the First Time—The New York Times.
LIGO announces detection of gravitational waves from colliding neutron stars..
What is gravitational wave astronomy and cosmology?
Gravitational-wave astronomy is an emerging field of science, concerning the observations of gravitational waves (minute distortions of spacetime predicted by Albert Einstein's theory of general relativity) to collect relatively unique data and make inferences about objects such as neutron stars and black holes, events .
What is gravitational-wave astronomy and cosmology?
Gravitational-wave astronomy is an emerging field of science, concerning the observations of gravitational waves (minute distortions of spacetime predicted by Albert Einstein's theory of general relativity) to collect relatively unique data and make inferences about objects such as neutron stars and black holes, events .
What is the theory behind gravitational waves?
Einstein's theory of General Relativity predicts that accelerating massive bodies will produce gravitational waves, vibrations in the fabric of spacetime..
Compact binary inspiral gravitational waves are produced by orbiting pairs of massive and dense ("compact") objects like white dwarf stars, black holes, and neutron stars.
There are three subclasses of "compact binary" systems in this category: Binary Neutron Star (BNS) - two neutron stars orbiting each other.
Einstein's theory of General Relativity predicts that accelerating massive bodies will produce gravitational waves, vibrations in the fabric of spacetime.
Though Einstein predicted the existence of gravitational waves in 1916, the first proof of their existence didn't arrive until 1974, 20 years after his death.

Aug 3, 2022This method is usually referred to as bright siren method. GWs can provide a direct sky localization and dL measurement of the source. Provided AbstractIntroductionMethods for GW CosmologyCosmological Results from

From the gravitational wave signature of compact star binaries, it is possible to measure the luminosity distance of the source directly, and if additional information on the source redshift is provided, a measurement of the cosmological expansion can be performed.

Can gravitational waves probe cosmology?

Gravitational waves (GWs) have a great potential to probe cosmology.
We review early universe sources that can lead to cosmological backgrounds of GWs.
We begin by presenting definitions of GWs in flat space-time and in a cosmological setting, and discussing the reasons why GW backgrounds from the early universe are of a stochastic nature.

Does Einstein Telescope have gravitational waves?

Abernathy, M. et al.
Einstein gravitational wave telescope:

conceptual design study

European Gravitational Observatory

document number ET-0106A-10 (2011).
Piórkowska, A., Biesiada, M. & Zhu, Z.-H.
Strong gravitational lensing of gravitational waves in Einstein telescope.
J.
Cosmol.
Astropart.
Phys. 10, 022 (2013).

How much do Gravitational waves differ from stellar collisions?

They differ by less than 10%, but the differences seem to be statistically significant (3.7 standard deviations).
Innovative techniques, including:

the detection of gravitational waves from stellar collisions such as :

one that astronomers witnessed last August

should settle the question in the next few years.

Is waveform-independent cosmography possible?

Here, we report a waveform-independent strategy to achieve precise cosmography by combining the accurately measured time delays from strongly lensed gravitational wave signals with the images and redshifts observed in the electromagnetic domain.

List of gravitational wave detections

This page contains a list of observed/candidate gravitational wave events.

Cosmology from gravitational waves

How do gravitational waves affect the universe?

What cosmic bodies are the source of gravitational waves?

What do gravitational waves tell us about the universe?

What is gravitational wave astronomy and cosmology?

What is gravitational-wave astronomy and cosmology?

What is the theory behind gravitational waves?

Can gravitational waves probe cosmology?

Does Einstein Telescope have gravitational waves?

How much do Gravitational waves differ from stellar collisions?

Is waveform-independent cosmography possible?