Nature seems to behave as we would have expected, which is that it has produced not only a very powerful
gravitational wave source like what we have detected and are talking about now, but also a not - so - powerful one of the same kind.
B. J. Shappee et al., «Early spectra of
the gravitational wave source GW170817: Evolution of a neutron star merger,» Science (16 October 2017)
D. A. Coulter et al., «Swope Supernova Survey 2017a (SSS17a), the optical counterpart to
a gravitational wave source,» Science (16 October 2017)
«It ties this object to
the gravitational wave source beyond all reasonable doubt.»
Early spectra of
the gravitational wave source GW170817: Evolution of a neutron star merger.
Italy's Advanced Virgo instrument will come online this fall in conjunction with LIGO, allowing astronomers to pinpoint
gravitational wave sources.
But the pomp will belie nagging problems that are likely to keep Virgo from joining its U.S. counterpart, the Laser Interferometer Gravitational - Wave Observatory (LIGO), in a hunt for
gravitational wave sources that was meant to start next month.
For the first time, theoretical physicists from the University of Basel have calculated the signal of specific
gravitational wave sources that emerged fractions of a second after the Big Bang.
By studying computer simulations of astrophysical phenomena, scientists can figure out what type of signals to expect from various
gravitational wave sources.
A third LIGO detector will allow researchers to triangulate
gravitational wave sources and train other telescopes on the same part of the sky to learn more.
Another of his recent work, on how to strategically point telescopes to find electromagnetic counterparts to
gravitational wave sources, was adapted for observations by the Very Large Array radio telescope in New Mexico, which successfully observed radio emission from the merger.
Not exact matches
Observations of the first electromagnetic counterpart to a
gravitational -
wave source by the TOROS collaboration.
The
source of a mysterious glitch in data from a
gravitational wave detector has been unmasked: rap - tap - tapping ravens with a thirst for shaved ice.
The occasional merger of neutron stars literally shakes the universe by sending out
gravitational waves (illustrated above), but these events may also be the main
source of gold and other heavy elements in the Milky Way, a new study suggests.
The NASA / ESA Hubble Space Telescope has observed for the first time the
source of a
gravitational wave, created by the merger of two neutron stars.
The distance to the merger makes the
source both the closest
gravitational wave event detected so far and also one of the closest gamma - ray burst
sources ever seen.
«Hubble observes
source of
gravitational waves for the first time.»
BlackGEM is going to hunt down optical counterparts of
sources of
gravitational waves — tiny ripples in spacetime generated by colliding black holes and neutron stars and detected for the first time in 2015 by the Laser Interferometer Gravitational - Wave Observ
gravitational waves — tiny ripples in spacetime generated by colliding black holes and neutron stars and detected for the first time in 2015 by the Laser Interferometer
Gravitational - Wave Observ
Gravitational - Wave Observatory (LIGO).
Plus, rumors abound over a new
gravitational wave signal, zebrafish can be trained to crave — and self - administer — opioids, astronomers discover the
source of a nova witnessed in the 15th century, and burying beetles concoct a «cocktail» of microbe - laced slime to keep their larvae healthy.
Locked in a deadly embrace, two white dwarf stars may be the strongest
source of
gravitational waves now flooding our galaxy.
Virgo will improve physicists» ability to locate the
source of each new event, by comparing millisecond - scale differences in the arrival time of incoming
gravitational wave signals.
The scientists now have not only
gravitational -
wave detectors but also a wealth of other types of observatories collaborating in this effort to capture a range of multimessenger signals from the
sources that produce
gravitational waves.
Gravitational wave detectors of the future will refine our newly discovered «sense» by broadening the range of detectable gravitational waves and pinpointing t
Gravitational wave detectors of the future will refine our newly discovered «sense» by broadening the range of detectable
gravitational waves and pinpointing t
gravitational waves and pinpointing their
sources.
With much longer arms than the detectors on Earth, it should be sensitive to
gravitational waves from many more
sources.
A
gravitational wave from a distance
source stretches space by an infinitesimal amount, and to detect that rhythmic stretching LIGO employs two gigantic optical devices called interferometers, which essentially act as gigantic rulers.
Pinpointing the
sources of
gravitational waves will allow astronomers to point other telescopes their way, boosting the chances of learning more about them via x-rays, gamma - rays, radio
waves, neutrinos and more.
Because all three
gravitational -
wave detectors saw the signal, physicists could triangulate and locate the
source to within a 30 - square - degree patch of sky — about 60 times the size of the moon and much more precise than Fermi's localization.
That configuration would help it pinpoint the
sources of
gravitational waves on the sky and allow it to see the longer - wavelength ripples from a wider range of
sources including binary white dwarfs, slower - spinning pulsars and intermediate - mass black holes weighing hundreds or thousands of suns.
We believe that the universe does indeed contain very many
sources of
gravitational waves.
We thought the BICEP2 telescope had seen
gravitational waves from the universe's creation, but the Planck spacecraft suggests cosmic dust was the
source
LIGO's discovery of
gravitational waves was a great achievement, but a new analysis suggests the signal could have come from a rather exotic
source
They travel like
waves on a pond, spreading outwards from
sources of extreme
gravitational disturbance such as the collision of a star with a black hole.
This background consists of
gravitational waves from a large number of
sources that overlap with one another, together yielding a broad spectrum of frequencies.
Rochester Institute of Technology professors have developed a faster, more accurate way to assess
gravitational wave signals and infer the astronomical
sources that made them.
LIGO's goal, of course, is to see more
sources of
gravitational waves.
If the X-ray
source was caused by a GRB triggered by the merger of neutron star with a black hole or another neutron star, then
gravitational waves would also have been produced..
When the
gravitational wave event GW170817 was detected, astronomers rushed to search for the
source using conventional telescopes (see the Introduction by Smith).
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.
In this case, they have been able to narrow the possible regions of sky that could host the
source of the
gravitational waves by 10 times more than with LIGO alone.
If Piran is correct, the characteristic signature of such an event should be a burst of
gravitational waves that ends just as a burst of gamma rays arrives from the same
source.
Physicists have known for decades that every pair of orbiting bodies is a
source of
gravitational waves.
Neutron stars, along with colliding black holes and the Big Bang, may all be
sources of
gravitational waves.
The additional detector will greatly improve the ability of the global detector network to localize
gravitational -
wave sources.
«The frequencies in the ringdown are the signature of the
source of
gravitational waves, like different bells ring with different sound,» explains Professor Chirenti.
While this experimental work was taking place, theorists outside Caltech, MIT, and the LIGO project were developing computer codes to simulate the massive collisions of black holes and other
sources of
gravitational waves that LIGO might detect.
On August 17, LIGO sent alerts for a
gravitational wave detection from colliding neutron stars to observatories around the world, firing a «starter's pistol» in the race to spot the
source of the space - time ripples.
Finding the exact location of the
source of
gravitational waves deep in space is challenging work.
Now, a potential
source of such swirliness is
gravitational waves.
A false alarm, where LIGO mistakes a signal from a non - astrophysical
source like an earthquake or lightning strike as a
gravitational wave, is only likely to occur once every 70,000 years,» Bose said.
So while there will be certain
sources of
gravitational waves that we expect to see, the really exciting part is what we did not predict and what we did not expect to see.»