Stellar mass black holes formed in
powerful gamma ray bursts in the early Universe....
Not exact matches
Black holes gobble up some matter and launch the rest away in
powerful jets, scattering atoms within and between galaxies; pairs of neutron stars, also targets of Advanced LIGO, may ultimately trigger
gamma -
ray bursts, among the brightest and most energetic explosions known in the universe.
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.
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 the
Gamma Ray Observatory, believe they now know the source of
powerful bursts of
gamma rays coming from points distributed evenly across the
gamma rays coming from points distributed evenly across the sky.
This year, astronomers found they are also responsible for some of the most
powerful explosions — short
gamma -
ray bursts.
First, it explains the origins of some
gamma ray bursts, the second most
powerful known events in the cosmos other than merging black holes.
Further study showed that
gamma -
ray bursts are the most distant and
powerful explosions in the universe.
Schaefer realized that only a
gamma -
ray burst, the most
powerful type of explosion ever observed, is bright enough to give us information about conditions near the edge of the visible universe, more than 13 billion light - years away.
These
gamma -
ray bursts, astrophysicists recently learned, originate in distant galaxies and are unfathomably
powerful — as much as 10 quadrillion (a one followed by 16 zeros) times as energetic as the sun.
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.
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.
A satellite dedicated to hunting
gamma ray bursts, the most
powerful explosions in space, has turned on with a bang.
It packed as much energy in its mere 5 - millisecond duration as the sun puts out in a month, making it by far the strongest, quickest signal radio astronomers have observed, although it wasn't nearly as
powerful as the elusive
gamma ray bursts that populate the universe.
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.
Like the aftershocks of an earthquake, violent x-
ray flares have been discovered in the aftermath of
gamma -
ray bursts, the most
powerful explosions in the universe.
In rare cases, black hole births are even more spectacular, with the star firing out
powerful jets of high - energy radiation as it dies — a phenomenon known as a
gamma -
ray burst.
So Loeb and colleagues calculated just how big an asteroid, how strong a supernova, or how
powerful a
gamma -
ray burst would have to be to inject that much energy into Earth's oceans.
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.
Indeed, to shove aside such vast volumes of gas, the jets have churned out as much energy as nearly a billion
gamma -
ray bursts — the most
powerful instantaneous explosions known.
Two seconds after the gravitational waves, orbiting telescopes detected a
powerful, short
gamma ray burst.
«
Gamma -
ray bursts are uniquely
powerful and probably the only way for a very long time to observe the moment of first light — that redshift when the very first stars formed,» Lamb remarks.
If so,
gamma -
ray bursts must be extremely
powerful.
Stephen Thorsett of Princeton University in New Jersey has been thinking about the implications for life on Earth should a nearby object in space suddenly emit a
powerful burst of
gamma rays.
VLT observations have shed new light on the mysterious cosmic explosions known as
gamma -
ray bursts, which are the most
powerful blasts in the universe.
It could easily have been caused by a supernova punching through the top and bottom of the galactic disk, the intense stellar winds from 10 or so hot stars, a
powerful gamma -
ray burst, or even a large star moving through the area.