Sentences with phrase «gamma ray bursts appear»

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

Not exact matches

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

A Hungarian - US team of astronomers have found what appears to be the largest feature in the observable universe: a ring of nine gamma ray bursts — and hence galaxies — 5 billion light years across.

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.

Since then, its discoveries have starred in ScienceNOW stories about gamma ray bursts at the fringes of the galaxy (24 April 1998), gamma ray bursts possibly spawned by black holes (15 June 1998), and gamma ray bursts that appear to lack gamma rays (20 October 1999), among others.

Astronomers calculated that if a supernova spawned a gamma - ray burst, a distinctive type of light would appear during the following week.

A pair of gas clouds in a nearby galaxy appears to be the tortured remains of two ancient gamma - ray bursts.

In the days and weeks following the September LIGO announcement, a handful of papers appeared on the open - access science paper website arXiv.org, throwing out possible physical scenarios in which two midsize colliding black holes could produce a gamma - ray burst.

Although GRB 000131, like other gamma - ray bursts, appears to have taken place in a remote «early galaxy» (or «sub-galactic clumps» of stars) that is smaller than today's luminous galaxies, astronomers found it difficult to detect that extremely dim, sub-galactic clump of stars even with the Hubble Space Telescope, as the observed fading of the afterglow indicated that the maximum brightness of the gamma - ray emission was explosion was at least 10,000 times brighter than its host galaxy.