Sam Warfel Posted September 12, 2022 Share Posted September 12, 2022 We’re seeing elevated levels of Solar protons right now, not quite to S1 levels, but close. Anyone know the cause of that? I don’t remember any flares or CMEs recently on the Earthside that could have caused it… Link to comment Share on other sites More sharing options...
Vancanneyt Sander Posted September 12, 2022 Share Posted September 12, 2022 According to SWPC report it's due to far side activity on September 8th Link to comment Share on other sites More sharing options...
Sam Warfel Posted September 12, 2022 Author Share Posted September 12, 2022 17 minutes ago, Vancanneyt Sander said: According to SWPC report it's due to far side activity on September 8th Interesting! How can a farside event reach Earth? Link to comment Share on other sites More sharing options...
farm24 Posted September 12, 2022 Share Posted September 12, 2022 29 minutes ago, Orneno said: Interesting! How can a farside event reach Earth? the spiral effect (cant remember the first part of the name) Link to comment Share on other sites More sharing options...
DaZed24 Posted September 12, 2022 Share Posted September 12, 2022 (edited) 13 minutes ago, farm24 said: the spiral effect (cant remember the first part of the name) I think it's called "Parker Spiral" if I remember correctly? Edited September 12, 2022 by DaZed24 Posted too quickly + autocorrect Link to comment Share on other sites More sharing options...
Vancanneyt Sander Posted September 12, 2022 Share Posted September 12, 2022 5 minuten geleden, farm24 zei: the spiral effect (cant remember the first part of the name) Not only that, very strong far side events can also cause them even if they are on the other side. I remember happening once but can’t find what date it was 😕 Link to comment Share on other sites More sharing options...
MinYoongi Posted September 12, 2022 Share Posted September 12, 2022 1 minute ago, Vancanneyt Sander said: Not only that, very strong far side events can also cause them even if they are on the other side. I remember happening once but can’t find what date it was 😕 1 Link to comment Share on other sites More sharing options...
Sam Warfel Posted September 12, 2022 Author Share Posted September 12, 2022 6 minutes ago, MinYoongi said: Seems like some pretty advanced stuff Link to comment Share on other sites More sharing options...
Vancanneyt Sander Posted September 12, 2022 Share Posted September 12, 2022 Yes! The archive for that day: Quote However, the most impressive activity of the day was a remarkable backside CME, observed on SOHO/LASCO starting at about 15/2355 UTC. This event resulted in the proton enhancements discussed in section IIA below. The observed CME together with backside imagery inferred from the SOHO/MDI instrument suggest old Region 9557 (S20, L=283) as the likely source, presently located near the far backside central meridian. A major proton event for >= 100MeV protons above 1pfu began at 16/0105 UTC, followed by >= 10Mev protons above 10pfu at 16/0135 UTC. Maximum flux for 100Mev protons was 29pfu at 16/0305 UTC, and for 10MeV protons was 493pfu at 16/0355 UTC. Both events remain in progress, and represent a record response for a presumed CME source so far behind the western limb as described in section 1A above. The reason for it has to be found in well connected magnetic field lines according to another event in September 2014. 1 Link to comment Share on other sites More sharing options...
David Silver Posted September 14, 2022 Share Posted September 14, 2022 The heliospheric current sheet is the largest structure in the solar system. It results from the influence of the Sun's rotating magnetic field on the plasma in the interplanetary medium, aka the solar wind. The wavy spiral shape we are all immersed in 24/7 is the Parker Spiral. The sun is a ball of proton fusion spewing mostly protons which race along the interplanetary magnetic field lines, whipping their way around the sun to Earth quickly, especially during SPE “solar particle/proton events”. 1 Link to comment Share on other sites More sharing options...
Marcardo Posted September 14, 2022 Share Posted September 14, 2022 (edited) great observations! Edited September 14, 2022 by Marcardo Link to comment Share on other sites More sharing options...
Sunboi Posted September 14, 2022 Share Posted September 14, 2022 Is that far side event causing the increase in solar wind density? It sure spiked in the last 12hrs. Link to comment Share on other sites More sharing options...
Jesterface23 Posted September 14, 2022 Share Posted September 14, 2022 56 minutes ago, Sunboi said: Is that far side event causing the increase in solar wind density? It sure spiked in the last 12hrs. Something on the far side, besides any big events on a limb, wouldn't change the solar wind on our side. The proton density increase is most likely the CH in the north-central solar disk. 1 Link to comment Share on other sites More sharing options...
mozy Posted September 14, 2022 Share Posted September 14, 2022 1 hour ago, Sunboi said: Is that far side event causing the increase in solar wind density? It sure spiked in the last 12hrs. There was a minor CME center-disk a few days ago, might've been impacted by that one. 1 Link to comment Share on other sites More sharing options...
Jesterface23 Posted September 14, 2022 Share Posted September 14, 2022 21 minutes ago, mozy said: There was a minor CME center-disk a few days ago, might've been impacted by that one. A CME on the 9th could be a possibility. Link to comment Share on other sites More sharing options...
SunspotRager93 Posted September 15, 2022 Share Posted September 15, 2022 So are these dangerous then? Link to comment Share on other sites More sharing options...
Sam Warfel Posted September 15, 2022 Author Share Posted September 15, 2022 3 minutes ago, SunspotRager93 said: So are these dangerous then? Nope. Only to astronauts. And only if it was a bigger event, this wasn't much at all, didn't even reach the lowest level of classification. 1 Link to comment Share on other sites More sharing options...
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