Astronomers Detect Biggest Explosion in the History of the Universe (Post Big Bang)
martyb writes:
Astronomers detect biggest explosion in the history of the Universe - ICRAR
Scientists studying a distant galaxy cluster have discovered the biggest explosion seen in the Universe since the Big Bang.
[...] It released five times more energy than the previous record holder.
Professor Melanie Johnston-Hollitt, from the Curtin University node of the International Centre for Radio Astronomy Research, said the event was extraordinarily energetic.
"We've seen outbursts in the centres of galaxies before but this one is really, really massive," she said.
"And we don't know why it's so big.
"But it happened very slowly-like an explosion in slow motion that took place over hundreds of millions of years."
The explosion occurred in the Ophiuchus galaxy cluster, about 390 million light-years from Earth.
It was so powerful it punched a cavity in the cluster plasma-the super-hot gas surrounding the black hole.
Lead author of the study Dr Simona Giacintucci, from the Naval Research Laboratory in the United States, said the blast was similar to the 1980 eruption of Mount St. Helens, which ripped the top off the mountain.
"The difference is that you could fit 15 Milky Way galaxies in a row into the crater this eruption punched into the cluster's hot gas," she said.
[...] The discovery was made using four telescopes; NASA's Chandra X-ray Observatory, ESA's XMM-Newton, the Murchison Widefield Array (MWA) in Western Australia and the Giant Metrewave Radio Telescope (GMRT) in India.
Journal Reference:
Giacintucci, S., Markevitch, M., Johnston-Hollitt, M., et al. Discovery of a giant radio fossil in the Ophiuchus galaxy cluster, (DOI: 10.3847/1538-4357/ab6a9d)
With apologies to Marvin the Martian:
Earth-shattering kaboom? Nope, that's not it.
Sun-shattering kaboom? Think larger.
Galaxy-shattering kaboom? Still way too small.
Galaxy-Cluster-shattering Kaboom! Now you've got it!
Don't Panic!
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