Sentences with phrase «short gamma ray burst»

Just two seconds after LIGO's detection, scientists had already snagged another piece of the puzzle: a satellite flagged a giant short gamma ray burst of high - energy light, «a firehouse of material,» as Fong describes it.

Two seconds after the gravitational waves, orbiting telescopes detected a powerful, short gamma ray burst.

One of these is proving the conjecture that neutron star collisions are indeed the source of one of the most energetic events in the cosmos, known for a few decades as short gamma ray bursts.

Not exact matches

[4] In 2013 astronomers published results on the evidence for a kilonova, associated with a short gamma - ray burst.

This event also provides the strongest evidence yet that short duration gamma - ray bursts are caused by mergers of neutron stars.

About two seconds after the detection of the gravitational wave, ESA's INTEGRAL telescope and NASA's Fermi Gamma - ray Space Telescope observed a short gamma - ray burst in the same direcGamma - ray Space Telescope observed a short gamma - ray burst in the same direcgamma - ray burst in the same direction.

Connecting kilonovae and short gamma - ray bursts to neutron star mergers has so far been difficult, but the multitude of detailed observations following the detection of the gravitational wave event GW170817 has now finally verified these connections.

If one of the jets were pointed directly toward Earth, we would have seen a short - duration gamma - ray burst, like many seen before, the scientists said.

This year, astronomers found they are also responsible for some of the most powerful explosions — short gamma - ray bursts.

«Our theories predicted that neutron star binaries, which would inevitably merge as they emit gravitational waves, would produce a short and distinctive burst of gamma rays at the moment of their merger,» Mészáros said.

Other short gamma - ray bursts have a distinctly different appearance, but they, too, seem connected to neutron stars.

Researchers have found that short gamma - ray bursts — those that last a couple of seconds or less — have brighter afterglows than the simple, reigning model of afterglow emission predicts.

But the gamma - ray signals produced by the August collision were 10,000 times less bright than those seen in other detected short gamma - ray bursts.

That could explain observations by NASA's Swift satellite in which a blast of X-rays preceded some short gamma - ray bursts by a few seconds.

Most short gamma - ray bursts are visible in X-rays and radio waves right away and fade over time.

If that jet is aimed directly at Earth, telescopes can see it as an ephemeral flash of light called a short gamma - ray burst, or GRB.

«This observation finally solves the mystery of the origin of short gamma - ray bursts,» Tanvir said.

The definitive evidence came from Hubble observations in near - infrared light of the fading fireball produced in the aftermath of a short gamma - ray burst (GRB).

«But this new theory predicts that when you compare near - infrared and optical images of a short gamma - ray burst about a week after the blast, the kilonova should pop out in the infrared, and that's exactly what we're seeing.»

«Previously, astronomers had been looking at the aftermath of short - period bursts largely in optical light, and were not really finding anything besides the light of the gamma - ray burst itself,» explained Andrew Fruchter of the Space Telescope Science Institute in Baltimore, Md., a member of Tanvir's research team.

They could have emerged from gamma - ray bursts, mysterious and short - lived cataclysms that briefly rank as the brightest objects in the universe; shock waves from exploding stars; or so - called blazars, jets of energy powered by supermassive black holes.

NASA's Swift satellite picked up the short - lived burst Thursday — gamma - ray bursts usually last just minutes, even seconds — and a suite of follow - up observations of the explosion's afterglow at telescopes around the globe enabled an age estimate.

In the mid-1990s, however, David Cline of the University of California, Los Angeles, and his colleagues suggested that the shortest gamma - ray bursts might be primordial black holes blowing up.

The bursts that appeared to be the most powerful churned out most of their energy in intense, short - wavelength gamma rays, while the weakest ones had peak energies at longer wavelength x-rays.

Swift can swivel towards gamma - ray bursts (GRBs) in less than a minute and has detected two short bursts since its launch in November 2004.

Scientists spotted a phenomenon called a short gamma - ray burst, a brief spurt of high - energy light, less than two seconds long.

It was the first time scientists pinpointed a short gamma - ray burst (lasting less than a second), which probably occurs during a collision of dense neutron stars.

«Now we have firm evidence for the origins of both short and long gamma - ray bursts.

The observations supported a 25 - year - old conjecture that neutron star mergers produce short gamma - ray bursts, and confirmed that gravitational waves travel at the same speed of light, ruling out some speculative alternatives to Einstein's theory of gravity and general relativity.

On 3 June, NASA's Swift satellite caught a short burst of energetic gamma rays coming from a galaxy 3.9 billion light years away.

On July 6, Lazzati's team of theorists had published a paper predicting that, contrary to earlier estimates by the astrophysics community, short gamma - ray bursts associated with the gravitational emission of binary neutron star coalescence could be detected — whether or not the gamma - ray burst was pointing at Earth.

More than a month before a game - changing detection of a short gamma - ray burst — a finding announced today — scientists at Oregon State University predicted such a discovery would occur.

Eventually they collide and produce the short gamma - ray burst.

Short gamma - ray bursts are cousin to long gamma - ray bursts, which are displays of enormous amounts of energy that last for more than two seconds and briefly outshine other energy sources before fading.

Unfortunately, attempts to find the afterglow and therefore the source of short gamma - ray bursts proved fruitless.

To be observable at that distance, the energy output of quasars must dwarf that of almost every known astrophysical phenomenon with the exception of comparatively short - lived supernovae and gamma - ray bursts.

Astrophysicists have typically focused on long gamma ray bursts, she adds, calling the short variety «kind of like the hipster class of gamma ray bursts.»

The most important discovery in astronomy in 2017 was the groundbreaking discovery of a gravitational wave event GW170817 due to the merger of two neutron stars as well as its associated short GRB (gamma ray burst) 170817A and other electromagnetic counterpart emissions in multi-wavelength.

«Usually when we see a short gamma - ray burst, the jet emission generated gets bright for a short time as it smashes into the surrounding medium — then fades as the system stops injecting energy into the outflow,» says Daryl Haggard, lead researcher on a new study describing the continued observations.

Such a rare event is expected to produce both gravitational waves and a short gamma - ray burst, both of which were observed on 17 August 2017 by LIGO — Virgo.

Besides confirming theories about the source of some short - duration gamma - ray bursts and the formation mechanism of many of the heavy elements including platinum, lead, gold, and rare earth elements, the gravitational waves enabled us to get a distance to the galaxy independent of the usual step - by - step procedure called the «distance scale ladder».

On March 31, 2011, scientists submitted a revised paper describing how they used a supercomputer to model the formation of short gamma - ray bursts (GRBs) that have been detected as lasting less than two seconds.

The formation of short gamma - ray bursts lasting less than two seconds from a meger between two neutron stars to create a black hole has been modelled with a supercomputer (more).

The coincident short gamma - ray burst (GRB 170817A) confirmed that merging neutron stars are indeed one of the progenitors of short GRBs.

The brief gamma - ray burst — lasting less than two seconds and of a type known as a «short» gamma - ray burst — occurred more than 10 times closer to Earth than any other whose distance was known, but was unexpectedly weak; the ultraviolet and optical signals were oddly bright and faded fast.

The coincident short gamma - ray burst -LRB-

New observations confirm that colliding neutron stars produce short gamma - ray bursts.

Gamma - ray bursts come in two varieties — long and short — depending on how long the flash of gamma rays lGamma - ray bursts come in two varieties — long and short — depending on how long the flash of gamma rays lgamma rays lasts.