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NASA satellite detects record gamma ray burst

Biggest explosion ever seen in the universe

Toytown Germany > Discussion forum > Themes > Space
GreenTea
NASA Satellite Detects Record Gamma Ray Burst Explosion Halfway Across The Universe

Something, somewhere, out there has gone off with one ultra-super-awesomely mega-ginormous bang. On March 19th, NASA's "Swift" satellite, dedicated to the study of gamma-ray bursts from the depths of the Universe, detected by far the biggest gamma-ray explosion ever recorded.

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GRB 080319B's optical afterglow was 2.5 million times more luminous than the most luminous supernova ever recorded, making it the most intrinsically bright object ever observed by humans in the universe.

Despite being a vast 7.5 billion light-years distant (and hence occurring at a time when the Universe was only about half its present age), it would have been visible with the naked eye to someone who happened to be looking in that direction in a dark, clear sky. Astronomers are now racking their brains to figure out what might have caused it.

Funny old place, the Universe.
eurovol
Supernova?
sharpe
Cosmic inflation
GreenTea
@Eurovol: Supernova? - well as it says in the bit I quoted: "2.5 million times more luminous than the most luminous supernova ever recorded". Even an ordinary everyday common-or-garden supernova is an ultra-super-awesome explosion, so this one must have been super-awesome to the power of super-awesome.

Or I wonder if it could have been just an average super-awesome supernova magnified by a gravitational lens?
Kat
This is the photo of it:
GreenTea
The Hubble Space Telescope took a peek at the aftermath on April 7th: Hubble Pinpoints Record-Breaking Explosion

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For nearly a minute this single star was as bright as 10 million galaxies.


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Hubble astronomers had hoped to see the host galaxy where the burst presumably originated, but were taken aback that the light from the GRB is still drowning out the galaxy's light even three weeks after the explosion.

Wow!
Night Owl
According to your Hubble link Green Tea, it says it was a "hypernova" ohmy.gif
interplanetjanet
Yeah, there's definitely a subset of astronomers who like the prefix "hyper" for really big events.

Neato, GreenTea, thanks for the link!
sharpe
The Incredible Hulk?
GreenTea
Update hot off the press: Brightest gamma-ray burst provides wealth of information on how stars explode

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"We conclude that the burst's extraordinary brightness arose from a jet that shot material almost directly towards Earth at almost the speed of light ..."


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"We happened to view this monster down the barrel of the very narrow and energetic jet, and the chance for this nearly head-on alignment to occur is only about once a decade"
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