The research, submitted to the journal Nature for publication, also provides direct evidence of ripples in the structure of space - time
made by gravitational waves, and it affirms the often tense link between quantum mechanics and Albert Einstein's theory of general relativity.
Scientists may soon glimpse the universe's beginnings by studying the subtle ripples
made by gravitational waves
Not exact matches
By making laser light travel up and down the arms and interfere with itself, scientists can deduce minute changes in the light's path from a
gravitational wave encounter.
MAKING WAVES The first
gravitational wave signal detected
by LIGO came from the merger of two black holes spiraling inward, as depicted in this numerical simulation.
Of course, LIGO doesn't generate large
gravitational waves — you could probably
make bigger ones yourself
by whirling bowling balls around — but it does so with optimal efficiency.
And in the case of only such black holes of many solar masses
making up dark matter, it existed before the Advanced Laser Interferometer
Gravitational - Wave Observatory (LIGO) announced its discovery of gravitational waves in 2016 — see a recent preprint paper by one of us (Frampton) at https://arxiv.org/ab
Gravitational - Wave Observatory (LIGO) announced its discovery of
gravitational waves in 2016 — see a recent preprint paper by one of us (Frampton) at https://arxiv.org/ab
gravitational waves in 2016 — see a recent preprint paper
by one of us (Frampton) at https://arxiv.org/abs/1510.00400.
Physicists have announced their fourth - ever detection of
gravitational waves, and the first such discovery
made together
by observatories in Europe and the United States.
Because of Virgo's loss of sensitivity with the wire suspensions, it will not be able to detect
gravitational waves independently, but it will be able to help confirm a potential detection
made by LIGO and locate sources in the sky with greater accuracy.
Scientists turned to the program to release data from the LIGO experiment, which
made headlines earlier this year
by discovering
gravitational waves.
The discovery was
made possible
by the enhanced capabilities of Advanced LIGO, a major upgrade that increases the sensitivity of the instruments compared to the first generation LIGO detectors, enabling a large increase in the volume of the universe probed — and the discovery of
gravitational waves during its first observation run.
The new LIGO discovery is the first observation of
gravitational waves themselves,
made by measuring the tiny disturbances the
waves make to space and time as they pass through Earth.
After the first direct detection of
gravitational waves that was announced last February
by the LIGO Scientific Collaboration and
made news all over the world, Luciano Rezzolla (Goethe University Frankfurt, Germany) and Cecilia Chirenti (Federal University of ABC in Santo André, Brazil) set out to test whether the observed signal could have been a gravastar or not.
Indeed, the very first indirect observations of
gravitational waves were
made with pulsars: it was found that their rotational energy was decreasing (they rotated more slowly over time), at exactly the rate that we would expect if they were shedding that energy
by giving off
gravitational waves!
As part of these preparations, the team at Hanford was
making routine adjustments to reduce the level of noise in the
gravitational -
wave data caused
by angular motion of the main mirrors.
The first direct detections of
gravitational waves in late 2015 were
made possible
by a dedicated forty year quest to design, build, and operate LIGO, the Laser... Read more»
The first direct detections of
gravitational waves in late 2015 were made possible by a dedicated forty year quest to design, build, and operate LIGO, the Laser Interferometer Gravitational - wave
gravitational waves in late 2015 were
made possible
by a dedicated forty year quest to design, build, and operate LIGO, the Laser Interferometer
Gravitational - wave
Gravitational -
wave Observatory.
The first detection of
gravitational waves was made last year by the Laser Interferometer Gravitational - Wave Observatory, which picked up the distinctive vibration of two sun - sized black holes merging into a large
gravitational waves was
made last year
by the Laser Interferometer
Gravitational - Wave Observatory, which picked up the distinctive vibration of two sun - sized black holes merging into a large
Gravitational - Wave Observatory, which picked up the distinctive vibration of two sun - sized black holes merging into a larger black hole.
Researchers with the Laser Interferometer
Gravitational - Wave Observatory (LIGO) announced today (Feb. 11) that they had made history's first direct detection of gravitational waves, enigmatic ripples in space - time whose existence was first predicted 100 years ago by Albert Einstein's famous theory of genera
Gravitational - Wave Observatory (LIGO) announced today (Feb. 11) that they had
made history's first direct detection of
gravitational waves, enigmatic ripples in space - time whose existence was first predicted 100 years ago by Albert Einstein's famous theory of genera
gravitational waves, enigmatic ripples in space - time whose existence was first predicted 100 years ago
by Albert Einstein's famous theory of general relativity.
The
gravitational - wave discovery was made with the twin Laser Interferometer Gravitational - wave Observatory (LIGO) detectors, which are funded by the National Science Foundation (NSF), and were conceived, built, and are operated by Cal
gravitational -
wave discovery was
made with the twin Laser Interferometer
Gravitational - wave Observatory (LIGO) detectors, which are funded by the National Science Foundation (NSF), and were conceived, built, and are operated by Cal
Gravitational -
wave Observatory (LIGO) detectors, which are funded
by the National Science Foundation (NSF), and were conceived, built, and are operated
by Caltech and MIT.
Toward this end, LIGO is set up to immediately alert the astronomical community when
gravitational -
wave detections are
made by the twin observatories, located in Livingston, Louisiana, and Hanford, Washington.
Indian scientists
made direct contributions — ranging from designing algorithms used to analyse signals registered
by detectors to ascertain those from a
gravitational wave to working out parameters like estimating energy and power radiated during merger, orbital eccentricity and estimating the mass and spin of the final black hole and so on.