Solar Orbiter discovers plasma jets that could fuel the production of solar wind
https://www.nasaspaceflight.com/2023/09/solar-orbiter-picoflare/

Recently, the joint European Space Agency (ESA)/NASA Solar Orbiter spacecraft discovered an array of tiny… The post Solar Orbiter discovers plasma jets that could fuel the production of solar wind appeared first on NASASpaceFlight.com .
#European #Featured #International #Other #Science #CME #Corona #ESA #EUI #Heliophysics #NASA #Solar_Orbiter #Solar

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Solar filament eruption and weak, C5.2 flare from yesterday in AR 13397. This event also appears to be associated with a CME.

(Footage courtesy of NASA/SDO and the AIA science team.)
#Sun #space #astronomy #solarflare #promeruption #CME #spaceweather

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https://youtube.tictoc.social/w/ePoFhESKeACvFx6fJKWYDX?autoplay=1

via #SolarHam:

#CME Update:

August 6, 2023 @ 12:10 UTC

"The X1.6 solar flare around AR 3386 was responsible for the second of two halo CMEs on Saturday. The first CME was the result of a long duration M-Flare/Filament eruption earlier in the day. Both appear to have an Earth directed component with glancing blows possible beginning August 8th. The combination could generate minor (G1) to moderate (G2) storming at higher latitudes. Aurora sky watchers should be alert beginning Tuesday.

"UPDATE: The latest NOAA/SWPC update is reporting that the second CME (X1.6 Flare) will be a miss. Even with that forecast, I still believe that the eastern flank could still graze past Earth."

https://www.solarham.net/

#SolarFlares #solarcycle25 #SolarFlare

Un nuovo intenso #BrillamentoSolare (o #Flare), classe X1.6 (“Strong”), è stato osservato poche ore fa, a partire dalle 23:45 di ieri (massimo di intensità alle 00:21) di stanotte 6 agosto. Possibilità di blackout nelle comunicazioni radio nella vasta area evidenziata. Altri fenomeni potenzialmente dannosi (#CME, #SPE) potrebbero seguire.
#SpaceWeather #ingvambiente

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Today I learned about the solar phenomenon known as #ParkerSpiral -- which means that even a #CME that isn't Earth-facing could still affect Earth! I did not know about that!

"July of 2012 witnessed the eruption of a very large and fast solar coronal mass ejection (CME) (see NASA STEREO Observes One of the Fastest CMEs On Record and #Carrington-class CME Narrowly Misses Earth ). While not directed at Earth, it was sufficiently large that it could have seriously disrupted the global electrical #infrastructure. The event did impact STEREO-A of NASA's heliophysics fleet which provided a host of measurements (see Sentinels of the Heliosphere).

"One of the conditions which contributed to the high speed of this event is that two smaller CMEs were launched a little earlier, and these events cleared out much of the solar wind material, leaving little to slow the outflow of the July 23 event (UTC).

"In the visualizations below, generated from the Enlil space weather model, green represents particle density, usually protons and other ions. In green, we see the Parker Spiral moving out from the sun generated by the sun's current sheet (Wikipedia). Red represents particles at high temperatures and shows the CME is hotter than the usual solar wind flow. Large changes in density are represented in blue. These three colors sometimes combine to tell us more about the characteristics of the event (noted in the 3-color Venn diagram below).

"However, if this CME had struck Earth's magnetosphere, which has a much stronger magnetic field, the changing magnetic field would induce much larger voltages in systems with long electrical conductors, such as power lines that run over long distances. These significantly higher voltages can damage power transformers."

https://svs.gsfc.nasa.gov/4167

via Spaceweather.com

Sunday, July 30, 2023

"GEOMAGNETIC STORM WATCH (G2): Geomagnetic storms are possible on Aug. 1st when a #CME is expected to hit Earth's magnetic field. Minor G1-class storms are likely with a chance of escalating to category G2. The CME was hurled almost directly toward Earth by the eruption of a magnetic filament in the sun's northern hemisphere on July 28th. Aurora alerts: SMS Text

"#PROTONS ARE *STILL* HITTING EARTH'S ATMOSPHERE: For the second day in a row, energetic protons from the sun are raining down on Earth's atmosphere. This is called a "radiation storm" (S1-class), and it was caused by a magnificent eruption on July 28th.

"The blast site was hidden from view just behind the sun's northwestern limb. Earth-orbiting satellites registered an M4-class solar flare, but the underlying explosion was stronger. It was probably an X-flare partially eclipsed by the edge of the sun.

"How can a sunspot not facing Earth send so many protons in our direction? The answer is 'the #ParkerSpiral.' Take a look. As the sun spins, its magnetic field spirals like water flowing from a twirling lawn sprinkler. Lines of magnetic force emerging from behind the sun's northwestern limb (where the explosion happened) spiral back and make a direct connection to Earth. It's a superhighway for energetic protons.

"This #RadiationStorm looks like it will continue at S1 levels for at least one more day. Its main effect is a polar cap absorption event (PCA) inside the Arctic Circle. Right now, #shortwave radios around the north pole aren't working very well."

https://spaceweather.com/repeat_images/parkerspiral2.png

#Spaceweather #SolarFlares #solarcycle25

This is the same area that shot out a huge #CME the other day. It was not Earth-facing, but still affected us. However, the sunspot will be facing us THIS WEEKEND! Hold onto your hats!

"BIG FARSIDE SUNSPOT: There's a spot on the farside of the sun so large it is affecting the way the whole sun vibrates. Helioseismic echoes pinpoint the active region in the sun's southern hemisphere not far behind the sun's southeastern limb. It should rotate into view this weekend."

Source: Spaceweather.com

https://spaceweather.com/images2023/26jul23/helioseismic.jpg

#Solar #solarcycle25 #SolarFlares #Spaceweather

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via #Spaceweather: MYSTERY #CME SPARKS GEOMAGNETIC STORM

"Unexpectedly, a CME hit Earth's magnetic field on July 25th (2235 UT), sparking a G1-class geomagnetic storm. It is unclear if this is the early arrival of a CME originally expected on July 27th or a completely different CME which was previously overlooked. Because of the uncertainty, a minor geomagnetic storm watch is still in effect for July 27th."

https://spaceweather.com/images2023/25jul23/data.jpg

#Solar #solarcycle25 #SolarFlares

What happens when that region becomes Earth-facing (in a couple of weeks -- the Sun rotates approximately every 27-30 Earth days)?

Latest #SpaceWeather News

via #SolarHam

Major Farsided Event + Fainter Earth directed #CME

July 24, 2023 @ 19:30 UTC

"A large halo coronal mass ejection (CME) was observed leaving the Sun during the past few hours and it looks to be related to a major farsided solar event. It was so powerful that despite taking place on the other side of the Sun, energetic #proton levels streaming past Earth are currently on the rise. Because this was farsided, the CME itself is directed away from our planet.

"In other news, a faint CME observed on Sunday following a filament eruption is predicted to reach Earth by July 27th. A minor (G1) geomagnetic storm watch was officially added for that day."

https://www.solarham.net/

#solarcycle25 #SolarFlares #Solar

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"A SIGNIFICANT EXPLOSION ON THE SUN (UPDATED): We've been waiting for this. Big sunspot AR3363 just produced a significant #SolarFlare, a long-duration M6-class event during the early hours of July 18th. NASA's Solar Dynamics Observatory recorded the blast near the sun's southwestern limb:

"Energetic protons accelerated by the flare have reached Earth and are now peppering the top of our planet's atmosphere. This is called a 'radiation storm.' According to data from NOAA's GOES-16 satellite, it is a category S2 event.

"Although the explosion was not X-class, it was more powerful than many X-flares would be. Why? Because it lasted so long. The flare's X-ray output was above M5 for more than an hour and above M1 for nearly 4 hours. It had plenty of time to lift a substantial CME out of the sun's atmosphere.

"Indeed, #SOHO coronagraphs have since detected a bright CME emerging from the blast site
Although the #CME is not heading directly for Earth, it appears to have an Earth-directed component. A NASA model suggests it could deliver an effective glancing blow as early as July 20th (0000 UT). NOAA is doing their own modeling, and results should be available soon.

"Our preliminary forecast: The CME's flank will reach Earth on July 20th. Its impact could spark G1 to G2-class geomagnetic storms, with a slight chance of G3. Stay tuned."

Source:
https://spaceweather.com/

#SpaceWeather #SolarFlares #SolarCycle25

Have you felt it yet?

#CME arrival today

Duck.

https://www.livescience.com/space/the-sun/cannibal-coronal-mass-ejection-that-devoured-dark-eruption-from-sun-will-smash-into-earth-tomorrow-july-18

If I am understanding this correctly, due to two coronal mass ejections tomorrow, millions will lose internet so they will not be able to work from home. Additionally, vehicle engines will not work, so there is no getting to work, either. Guess it is just those happy bicycle riders who will be working tomorrow. If I understand this right.

'Cannibal' coronal mass ejection that devoured 'dark eruption' from sun will smash into Earth on July 18
https://www.space.com/sun-coronal-mass-ejection-devoured-dark-eruption-smash-into-earth-july-18

#astrodon #astronomy #CME

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