Sentences with phrase «from gamma ray bursts»

A Chandra x-ray spectrum (inset) suggests that radiation from a gamma ray burst lit up part of a shell from a previously exploded supernova.

Not exact matches

While some responders had particular axes to grind (it's true that U.S. drug prices are radically higher than elsewhere in the world, for instance, and maybe a gamma ray burst could destroy earth, but those aren't really things you can act on tomorrow), many more offered healthful reality checks that most of us could benefit from, including:

Dr Gianluca Sarri from the School of Mathematics and Physics at Queen's University has led an international team of researchers to create the first small - scale replica of gamma ray bursts.

MYSTERIOUS gamma ray bursts that occur in the first moments of a storm, as lightning jumps between clouds, hint at where lightning comes from.

High - energy radiation from a gamma - ray burst reached Earth 4 minutes later than the lower - energy rays.

Meanwhile, astronomers using another NASA satellite, the Compton Gamma Ray Observatory, believe they now know the source of powerful bursts of gamma rays coming from points distributed evenly across theGamma Ray Observatory, believe they now know the source of powerful bursts of gamma rays coming from points distributed evenly across thegamma rays coming from points distributed evenly across the sky.

And the gamma - ray emission from FRB 131104 outshines its radio emissions by more than a billion times, dramatically raising estimates of the burst's energy requirements and suggesting severe consequences for the burst's surroundings and host galaxy.

Discovery of the gamma - ray «bang» from FRB 131104, the first non-radio counterpart to any FRB, was made possible by NASA's Earth - orbiting Swift satellite, which was observing the exact part of the sky where FRB 131104 occurred as the burst was detected by the Parkes Observatory radio telescope in Parkes, Australia.

«Previously, as anticipated, gamma ray detectors had observed bursts of gamma rays such as were expected from neutron star mergers.

Most astrophysicists think that gamma ray bursts, fantastically energetic flares from deep space, stream from new black holes that form when the cores of massive spinning stars collapse to trigger supernovas.

The blast, called a gamma ray burst (GRB), probably arose from the explosive death of a star when the universe was just 900 million years old.

«People used to think supernovae and gamma - ray bursts were all the same, then we learned they come from different types of events,» Bogdanov says.

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).

Gamma - ray bursts are mysterious flashes of intense high - energy radiation that appear from random directions in space.

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.

Combined with the fact that bursts seem to evolve from energetic gamma rays to X-rays to visible light, which means they cool off over time, the radio data supported the idea that they are huge fireballs, expanding at near - light - speed and cooling as they go.

Cosmic Bursts Demystified Gamma - ray bursts, brilliant flashes of radiation that occur in random directions roughly once a day, have for years been attributed to everything from colliding comets to natural particle accelerBursts Demystified Gamma - ray bursts, brilliant flashes of radiation that occur in random directions roughly once a day, have for years been attributed to everything from colliding comets to natural particle accelerbursts, brilliant flashes of radiation that occur in random directions roughly once a day, have for years been attributed to everything from colliding comets to natural particle accelerators.

The Compton Gamma Ray Observatory (CGRO), designed to detect gamma rays from distant astrophysical objects such as neutron stars and supernova remnants, had also begun recording bright, millisecond - long bursts of gamma rays coming not from outer space but from Earth bGamma Ray Observatory (CGRO), designed to detect gamma rays from distant astrophysical objects such as neutron stars and supernova remnants, had also begun recording bright, millisecond - long bursts of gamma rays coming not from outer space but from Earth bgamma rays from distant astrophysical objects such as neutron stars and supernova remnants, had also begun recording bright, millisecond - long bursts of gamma rays coming not from outer space but from Earth bgamma rays coming not from outer space but from Earth below.

An armada of space observatories measured gamma rays from the burst, while radio telescopes on Earth helped pinpoint the source of the activity.

Comets being way too cold to emit gamma rays, Paczy» nski advocated the latter hypothesis — that the bursts came from far away, which meant their energy must be preposterously large.

Earth's atmosphere would initially protect us from most of the burst's deadly X rays and gamma rays, but at a cost.

Inaugurated in 1991 to search for flashes of light from gamma - ray bursts — enigmatic explosions mostly seen in very distant galaxies — it never found one and was eventually shut down.

Gamma rays usually follow the death of a massive star but these bursts were 88,000 light - years from the nearest galaxy.

Super-LOTIS Picking up where the ETC / RMT left off, the Livermore Optical Transient Imaging System is hunting for the visible - light glow that lingers after the more energetic radiation from a gamma - ray burst has faded.

Aliens would have to simultaneously deploy nuclear weapons a billion times more powerful than Earth's entire stockpile for us to see the gamma - ray burst from the explosion, and even then it is so brief that we're unlikely to be looking at the right time.

Caltech and Penn State astronomers have found an explosive burst of gamma rays that seem to come from nowhere.

«More than 1,200 gamma - ray bursts, plus 500 flares from our sun and a few hundred flares from highly magnetized neutron stars in our galaxy have been seen by the GBM,» said principal investigator Bill Paciesas, a senior scientist at the Universities Space Research Association's Science and Technology Institute in Huntsville, Ala..

These profiles are different from those of known type Ic supernovae, with or without a gamma ray burst, and they can be understood if SN 2003jd was an aspherical axisymmetric explosion viewed from near the equatorial plane.

But as she read excited messages from colleagues that a gamma ray burst had also been detected, «I realized this was a breakthrough event,» says Troja, an associate research scientist at the University of Maryland in College Park who works at NASA's Goddard Space Flight Center in Greenbelt in Maryland.

The event's unusual characteristics have led researchers to dust off one of the earliest theories for the origin of gamma - ray bursts: that they come from comets that stray too close to neutron stars.

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.

We now aptly call them «gamma ray bursts,» and they originate from supernovae and from the collisions of superdense objects like neutron stars.

But the weather in Hawaii was not ideal, and this particular gamma - ray burst was not especially bright, limiting the amount of additional information astronomers could glean from the explosion.

It is expected to operate for 10 years, observing high - energy gamma - ray photons from violent supermassive black holes and mysterious cosmic explosions called gamma - ray bursts.

Astronomers have known for three decades that brilliant flashes of these rays, called gamma - ray bursts, arrive daily from random directions in the sky.

Fermi's two instruments will allow the telescope to observe the bursts at a wide — and largely unexplored — range of the energy spectrum of gamma rays, from 8000 to 30 million eV.

Ray Jayawardhana: It is a clue that most likely, these high energy neutrinos come either from jets of particles that are accelerated by super massive black holes at the hearts of galaxies, or from really gigantic stars that explode at the end of their lives that also produce a phenomenon we call gamma ray bursts, which also might accelerate particles to very high speeds and energies.

The powerful blasts of particles and light energy known as gamma - ray bursts come from violent cosmic events in deep space, such as stellar explosions and black hole collisions.

THE light from a spectacular gamma - ray burst has been used to set the most stringent constraints yet on the size of the «grains» of space - time.

Over the past few years, terrestrial telescopes such as the Major Atmospheric Gamma - ray Imaging Cherenkov Telescope (MAGIC) in the Canary Islands and the High Energy Stereoscopic System (HESS) in Namibia have seen low - energy photons from a gamma - ray burst (GRB) arriving before their high - energy counterpGamma - ray Imaging Cherenkov Telescope (MAGIC) in the Canary Islands and the High Energy Stereoscopic System (HESS) in Namibia have seen low - energy photons from a gamma - ray burst (GRB) arriving before their high - energy counterpgamma - ray burst (GRB) arriving before their high - energy counterparts.

And gamma - ray bursts — thought to result from especially powerful supernovas or stellar collisions — are so rare that the researchers calculated that, over a billion years, there's only about a 1 in 3 billion chance of one killing off tardigrades.

Off the coast of west Africa, perched on the highest point of the Canary Islands, a gamma - ray telescope called MAGIC — the name stands for the Major Atmospheric Gamma - ray Imaging Cherenkov telescope — scans the heavens for bursts of high - energy photons from far corners of the univgamma - ray telescope called MAGIC — the name stands for the Major Atmospheric Gamma - ray Imaging Cherenkov telescope — scans the heavens for bursts of high - energy photons from far corners of the univGamma - ray Imaging Cherenkov telescope — scans the heavens for bursts of high - energy photons from far corners of the universe.

When gamma - ray bursts were first detected by military satellites in the 1960s, nobody knew where they came from.

From brief glimpses throughout the past decade, astronomers have pieced together a standard theory of gamma ray bursts.

In the wee hours of the morning of 19 March, astronomers detected from more than halfway across the universe a burst of gamma rays brighter than a hundred - billion suns — and aimed squarely at Earth.

COULD the mysterious bursts of gamma rays that come from all parts of the sky be caused by distant collisions between balls of nuclear material measuring just 10 kilometres across?

The new observations support the theory that gamma - ray bursts result from the explosion of massive stars known as hypernovae.

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.

Gamma ray bursts appear as a directional burst of energy from collapsed massive stars.

Gamma rays from the far - off explosion triggered Swift's Burst Alert Telescope at 1:47 a.m. EDT on Sept. 13.