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SUMMARY:Forbush decrease spectrum in a magnetic cloud in the 2004 July 27 
 event
DTSTART;VALUE=DATE-TIME:20201005T164500Z
DTEND;VALUE=DATE-TIME:20201005T170000Z
DTSTAMP;VALUE=DATE-TIME:20260613T001418Z
UID:indico-contribution-2216@cern.ch
DESCRIPTION:Speakers: Anastasia Petukhova (Yu.G. Shafer Institute of Cosmo
 physical Research and Aeronomy of SB RAS)\nMagnetic clouds affect the inte
 nsity of galactic cosmic rays. The diffusion mechanism is usually consider
 ed as the formation mechanism for Forbush decrease (FD) in a magnetic clou
 d. An FD is an observed decrease in the intensity of cosmic rays. There is
  a new theory of FD formation\, in which the mechanism is the loss of part
 icle energy in the electromagnetic field of a magnetic cloud. The shape of
  the FD spectrum is calculated for a wide range of particle energies in th
 e 2004 July 27 event. According to the measurements of the global networks
  of ground-based neutron monitors and muon telescopes\, synchronous change
 s in the FD amplitude in time indicate that the FD is formed in a magnetic
  cloud for all energies. However\, the calculated FD spectrum differs from
  the obtained one from measurements. The reasons for the difference can be
 : 1) the mechanism of formation is the diffusion mechanism\; 2) the method
  for determining the spectrum\, using the notion of mean or median energy\
 , needs additional studies.\n\nhttps://indico.particle.mephi.ru/event/35/c
 ontributions/2216/
LOCATION:Discord Poster Server
URL:https://indico.particle.mephi.ru/event/35/contributions/2216/
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