Sentences with phrase «for gamma ray bursts»

Fryer's computational astrophysics work involving the largest explosions in the universe has impacted some of the most important open questions in astrophysics, including the origin of the elements, the nature and evolution of the first stars, the gravitational wave signals from compact binary systems, and the mechanism responsible for gamma ray bursts.

«For gamma ray bursts, models predict that an early X-ray emission would be seen,» said Aaron Tohuvavohu, Swift science operations and research assistant, Penn State.

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:

Just waiting for the next near E.L.E. to happen whether it be pandemic sickness, large meteor, large gamma ray burst, WMD or Massive tectonic activity....

This paper shows how much can be done, but to get results like this consistently, we will need new rapid - response facilities for observing gamma - ray bursts.»

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

As early as 2021 it will be joined by the Einstein Probe, a wide - field x-ray sentinel for transient phenomena such as gamma ray bursts and the titanic collisions of neutron stars or black holes that generate gravitational waves.

We find evidence for both models, suggesting that gamma - ray burst jets have a dual, hybrid nature,» said Troja, who is also a visiting research scientist at NASA's Goddard Space Flight Center.

He has now been able to prove for the first time, some of the key phenomena that play a major role in producing gamma ray bursts.

For this theory to work, the beams released by black holes would have to have strong, self - generated magnetic fields and the rotation of particles around the fields would then give off powerful bursts of gamma ray radiation.

«Swift is always watching the sky for bursts of X-rays and gamma - rays,» said Neil Gehrels, the mission's Principal Investigator and chief of the Astroparticle Physics Laboratory at NASA's Goddard Space Flight Center.

It remains to be seen if it can account for the extreme brightness seen at the beginning of gamma - ray bursts, he says.

COSMIC strings — imperfections in space - time — may be to blame for two unusual bursts of gamma rays in the early universe.

Calculations by Maxim Barkov and Serguei Komissarov, both at the University of Leeds, UK, show this could account for lingering X-ray emissions seen several minutes after some gamma - ray bursts begin, which have proved hard to explain (www.arxiv.org/abs/0908.0695).

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.

Hafnium bombs: In an episode reminiscent of the Cold Fusion debacle, DARPA forked out $ 7 million in the 1990s for research into a bomb predicted to release huge gamma - ray bursts without creating any nuclear fallout.

«Swift's rapid response time enabled us to use it to rapidly search for and detect the electromagnetic counterpart of this gamma - ray burst after its detection by LIGO,» said Jamie Kennea, associate research professor of astronomy and astrophysics, the leader of the Swift Science Operations Team at Swift's Mission Operations Center, located at Penn State's University Park campus.

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

There, he will continue his research on computer models for gamma - ray bursts.

For decades scientists have struggled to explain the origins of gamma - ray bursts, huge blasts of energy that occur daily in far - off galaxies.

Long gamma - ray bursts, which flash for up to 100 seconds or longer, are believed to occur when massive stars explode as supernovae.

For the first time, exactly the evidence we needed has been provided by the gamma - ray detections that coincided with this new gravitational - wave burst.»

He notes that the model was originally developed for active galactic nuclei — outbursts powered by supermassive black holes — so there is no reason to think it must also apply to gamma - ray bursts.

He put together an independent research proposal that was based on research he was already working on in his PI's lab: the development of computer models for gamma - ray bursts.

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.

Four months ago, NASA launched the Swift satellite to watch for gamma - ray bursts.

«It now seems almost certain that supernovas are responsible for long gamma - ray bursts,» Reeves says.

For a long time after gamma - ray bursts were discovered — accidentally, by Defense Department satellites looking for Soviet nuclear detonations in space — astronomers knew next to nothing about thFor a long time after gamma - ray bursts were discovered — accidentally, by Defense Department satellites looking for Soviet nuclear detonations in space — astronomers knew next to nothing about thfor Soviet nuclear detonations in space — astronomers knew next to nothing about them.

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.

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.

Astronomers are furiously searching for the source of a brief burst of gamma rays detected by NASA's Swift space telescope on Monday.

BeppoSAX should continue to analyze gamma ray bursts (such as the one above) and other x-ray sources for another year.

«Ironically, the project MASTER, initially intended for observing fast happening phenomena, such as for example the consequences of the Gamma - ray bursts and star flashes, discovered an unprecedented variability of a totally different scale,» comments Denis Denisenko.

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.

The Caltech Center for Advanced Computing Research's VOEventNet project, which created a virtual observatory by linking a number of telescopes, introduced a software program this week that works with Sky, allowing users to post and view images and video of transient phenomena such as exploding and colliding stars, gamma - ray bursts, and supernovae within minutes of their detection.

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

It sent a flood of high - energy radiation towards Earth that lasted much longer than is typical for a gamma - ray burst (GRB).

The explosion was officially designated GRB 090423, after its type (a gamma - ray burst) and date of detection; the space agency quickly announced it as the new record holder for cosmic distance.

Gamma - 400 aims to probe the nature of dark matter and the origins of extragalactic cosmic rays, and will search for high - energy gamma - ray buGamma - 400 aims to probe the nature of dark matter and the origins of extragalactic cosmic rays, and will search for high - energy gamma - ray bugamma - ray bursts.

We can only imagine how premature sharing could deflate a unified field theory or mangle an explanation for the origination of gamma - ray bursts.

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.

Enrico Costa of the Institute of Space Astrophysics and Cosmic Physics in Rome and Gerald Fishman of NASA's Marshall Space Flight Center in Huntsville, Alabama, won the astronomy prize for leading the development of space missions that started unraveling the secrets of gamma - ray bursts (pictured).

Pinpointing the origins of gamma - ray bursts, determining the workings of innate immunity, and extending the use of differential equations to applications in relativity are achievements paying off in Shaw Prizes for the scientists involved.

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.

«It's the most distant gamma - ray burst, but it's also the most distant object in the universe overall,» says Edo Berger of the Harvard - Smithsonian Center for Astrophysics, a member of the team that observed the afterglow with Gemini North.

However, rather than emitting violent bursts of gamma - ray radiation, like blazars, Seyfert galaxies are known for their strong ultra-violet emissions.

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.

The balls are neutron stars and Piran suggests that one - off bursts of gamma rays, which have mystified astronomers for more than two decades, are released when the two neutron stars of a binary system crash into one another.