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Just How Big Can Solar Flares Get, and Are We Ready?

Just How Big Can Solar Flares Get, and Are We Ready?
science.thewire.in - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from science.thewire.in Daily Mail and Mail on Sunday newspapers.

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Massive flare seen on the closest star to the solar system: What it means for chances of alien neighbors

Encyclopædia Britannica, Inc./Patrick O Neill Riley
This article is republished from The Conversation under a Creative Commons license. Read the original article, which was published May 3, 2021.
The Sun isn’t the only star to produce stellar flares. On April 21, 2021, a team of astronomers published new research describing the brightest flare ever measured from Proxima Centauri in ultraviolet light. To learn about this extraordinary event – and what it might mean for any life on the planets orbiting Earth’s closest neighboring star – The Conversation spoke with Parke Loyd, an astrophysicist at Arizona State University and co-author of the paper. Excerpts from our conversation are below and have been edited for length and clarity. ....

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Proxima Centauri's huge flare could be bad news for aliens

“Flares occur when magnetic field lines in the star twist and snap, releasing radiation and accelerating electrons and charged particles outwards,” MacGregor told SYFY WIRE. “The properties of the millimeter emission indicated that it was directly tracing those accelerated electrons. Because millimeter and UV emissions traced each other so closely, it might mean that millimeter observations could tell us about the limits of the UV environment of stars and exoplanets.
Though Proxima Centauri is a red dwarf only a fraction the size of our Sun, its deceptively small size doesn’t mean it can’t generate the rush of radiation that MacGregor and her colleagues caught multi-wavelength coverage of. Seeing the flare in various wavelengths gave them the opportunity to compare wavelength timing and energy. It also told them what the radiation was being produced by and where it was coming from. Visible light probably came from deeper in the star’s atmosphere, which can expl ....

Proxima Centauri , Meredith Macgregor , Astrophysical Journal , மெரிடித் மேக்ரிகோர் , வானியற்பியல் இதழ் ,

Our Neighbors Are Probably Dead. The Closest Earth-Like Planet To Us Is Being Thrashed By 7-Second 'Death Rays'

Our Neighbors Are Probably Dead. The Closest Earth-Like Planet To Us Is Being Thrashed By 7-Second 'Death Rays'
forbes.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from forbes.com Daily Mail and Mail on Sunday newspapers.

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Massive flare on Proxima Centauri could spell bad news for any alien life

Massive flare on Proxima Centauri could spell bad news for any alien life
astronomy.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from astronomy.com Daily Mail and Mail on Sunday newspapers.

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