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47069
From: Eve, [DNS_Address]
Subject: Solar Flare X 1.9 January 9th (more popcorn expected)
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X-CLASS SOLAR FLARE: Earth-orbiting satellites have just detected an X1.9-class solar flare (Jan. 9th @ 1850 UT). The source is hyperactive sunspot AR3184, now emerging over the sun's southeastern limb. NASA's Solar Dynamics Observatory (SDO) recorded the flare's extreme ultraviolet flash:  Above: An X1.9-class solar flare on Jan. 9th. Credit: SDO/NASA Radiation ionized the top of Earth's atmosphere, causing a shortwave radio blackout centered on the Pacific side of South America: blackout map. Mariners, aviators and ham radio operators may have noticed fadeouts and other unusual propagation effects at frequencies below ~25 MHz. This was an impulsive solar flare--intense but probably too brief to lift a coronal mass ejection (CME) out of the sun's atmosphere. It is too soon, however, to rule out the possibility of debris heading our way. Pending data from SOHO coronagraphs will reveal any CMEs in the hours ahead. Meanwhile, it is interesting to zoom out and see what the whole sun did around the time of the X-flare. SDO recorded 5 rapidfire eruptions. Click to set the scene in motion:  Going off like popcorn, these five sites erupted in a time window shorter than 90 minutes despite some of them being separated by as much as a million kilometers. Coincidence? Maybe not. Researchers discovered long ago that magnetic instabilities can ignite nearly simultaneous explosions across the entire face of the sun. This appears to be such a case. The collective effect of these disturbances may yet send a CME our way. Stay tuned! |
47070
From: Eve, [DNS_Address]
Subject: Re: Solar Flare X 1.9 January 9th (radio blackout visual)
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47077
From: Eve, [DNS_Address]
Subject: Re: Solar Flare X 1.9 January 9th (rare magnetic crochet)
URL: https://spaceweather.com/archive.php?view=1&day=10&month=01&year=2023
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SOLAR FLARE CAUSES RARE 'MAGNETIC CROCHET': The X-flare of Jan. 9th did something rare. It jerked Earth's magnetic field. Here is a composite of magnetometer recordings from Boulder, Colorado; Honolulu, Hawaii; and Fredericksburg, Virginia:  Full recordings: FRD, BOU, HON. Credit: International Real-time Magnetic Observatory Network (INTERMAGNET) The "jerk" is circled in yellow. It began around 1846 UT, and was detected by many magnetic observatories across the dayside of Earth. The phenomenon is called a 'magnetic crochet.' Radiation from the flare ionized the top of Earth's atmosphere and caused currents to flow 60 km to 100 km above Earth's surface. These currents, in turn, briefly altered Earth's magnetic field. Everything returned to normal a few minutes later. |
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47071
From: pamela, [DNS_Address]
Subject: Re: Solar Flare X 1.9 January 9th (radio blackout visual)
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Thanks Eve, heres another site which follows this, at video, Jan 9, 2023 SOLAR ACTIVITY UPDATE: (01/10/23). Increasing chance of flares. One X1.9-class solar flare already happened earlier today and more could follow. The sun now has two large, unstable (Beta-Gamma-Delta) sunspots capable of producing very strong explosions: AR3182 and AR3184. Both are turning to face Earth, and a New emerging region turning the NE limb increasing the odds of geoeffective flares this week. Stay tuned for updates… |
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