Astronomers warn of solar ‘superflare’ that could hit Earth
Astronomers warn of solar ‘superflare’ that could hit Earth
'Superflares' of energy emitted by stars could disrupt communications and cause dangerous blackouts
14 June, 2019, 20:42
It was the year 2000 and scientists had never seen anything like it: astronomers reported evidence of "superflares" on distant stars - solar outbursts many thousands of times more energetic than typical solar flares.
Astronomers have learned over the past decade that even large solar flares - powerful bursts of radiation - from our Sun are actually small potatoes compared to some of the flares we see around other stars.
Be that as it may, Notsu says the more we learn about superflares, the more we realise that while they might be more common on younger stars, Sun-like stars are definitely not precluded from this powerful, and potentially very risky form of stellar phenomena.
Scientists from University of Colorado (CU) Boulder in the United States have found that superflares can occur on older, quieter stars like our own - albeit more rarely, or about once every few thousand years. Superflares on this scale are an incredibly rare event, occurring once every few thousand years.
In the event that a superflare ejected from the sun, the Earth would nearly certainly sit in the way of a flood of high-vitality radiation, analysts said. In turn, these disruptions could lead to widespread blackouts and shorted communication satellites. "Yet, there is some probability that we could experience such an occasion in the following 100 years or something like that", said Yuta Notsu, a specialist in CU Boulder.
Researchers studied them using the now late Kepler Space Telescope. The NASA spacecraft, launched in 2009, seeks out planets circling stars far from Earth.
But, on the other hand, it seems that a team of expert astronomers in the United States has revealed the shocking announcement that the Sun could unleash one of these flares before the end of the century. Kepler's data was, however, showing that the flares from the stars were much bigger compared to the largest flare ever recorded by instruments on Earth, bringing the question of whether it's possible for the sun to eject a massive superflare which could disrupt communications on Earth.
Over a progression of studies, the gathering utilized those instruments to limit a rundown of superflares that had originated from 43 stars that looked like our sun.
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"If a superflare erupted from the sun".
"Be that as it may, we didn't have the foggiest idea if such enormous flares happen on the cutting edge sun with low recurrence", he said. In any case, more established stars like the Sun - which is 4.6 billion years of age - likewise produce them occasionally.
"Young stars have superflares once every week or so.
For the sun, it's at one time each couple of thousand years all things considered", Notsu said.
The team of researchers employed data collected by the Gaia Spacecraft and the Apache Point Observatory in Mexico to verify their discoveries.
"Now, its a much bigger problem because of our electronics". Then they subjected these events to statistical analysis.
Co-authors on the recent study include researchers from Kyoto University, the National Astronomical Observatory of Japan, University of Hyogo, University of Washington and Leiden University.
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