Guest Keith Woodard Posted April 17, 2014 Share Posted April 17, 2014 Good Day, I noticed on this website there was a moderate solar flare just yesterday. That flare was a CME that significantly lowered CGR counts as initally observed through the Thule AB observatory. However this CME in question appeared to be a short-lived and focused event in scope. http://neutronm.bartol.udel.edu/realtime/thule.html Cheers, KWITS Link to comment Share on other sites More sharing options...
Marcel de Bont Posted April 17, 2014 Share Posted April 17, 2014 The M1 flare from yesterday did not produce a CME. The current solar wind conditions indicate a weak coronal hole high speed stream. Link to comment Share on other sites More sharing options...
Guest Keith Woodard Posted April 17, 2014 Share Posted April 17, 2014 If no CME then why did this flare event cause a signifcant decrease in CGRs? CGRs are relatively stable from month to month at around 4300 to 4350, neutron counts per hour. Whatever type of radiation that impacted our magnetosphere was tightly-focused and very limited in scope. Link to comment Share on other sites More sharing options...
Guest Keith Woodard Posted April 17, 2014 Share Posted April 17, 2014 I don't mean to get into particle physics on this discussion forum but please at a high level, explain the difference in the sub-atomic particles that are received from one flare compared to another that ultimately induce a CME. Link to comment Share on other sites More sharing options...
Marcel de Bont Posted April 17, 2014 Share Posted April 17, 2014 I don't know, all I know that we are currently under the influence of a enhanced solar wind stream from a Coronal Hole. It is not a CME. It is likely that this solar wind stream which originated from a coronal hole causes the readings you are referring to. Link to comment Share on other sites More sharing options...
Guest Keith Woodard Posted April 17, 2014 Share Posted April 17, 2014 Maybe it does get down to Particle Physics for a final conclusion here. Link to comment Share on other sites More sharing options...
Guest Harry Twinotter Posted April 18, 2014 Share Posted April 18, 2014 The solar wind density and solar wind magnetic field strength are a bit elevated. The Forbush Decrease was not strong. The M7.3 solar flare looks like a significant event. You might see a significant drop in the cosmic ray flux this time. Link to comment Share on other sites More sharing options...
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