The influence of short timescale solar activity on the proton flux measured by AMS: Solar energetic particles and Forbush decreases

25 Apr 2017, 11:45
30m
Other Institutes

Other Institutes

Hyatt Arlington, Washington DC

Speaker

Kathryn Whitman (University of Hawai'i at Manoa (US))

Description

During the first 5 years of operations on board of the International Space Station, from May 2011 to May 2016, AMS has detected many short-term increases in the proton flux due to solar energetic particle (SEP) events and many sudden suppressions of the galactic cosmic ray (GCR) flux, called Forbush decreases (FD). AMS is able to measure the most energetic SEPs and has observed 27 SEP events associated with M- and X-class flares and fast coronal mass ejections (CME) with rigidities near to and above 1 GV. FDs associated with interplanetary CMEs and corotating interaction regions are observed and AMS can study their behavior with rigidity. Selected examples of each type of event will be presented.

Primary author

Kathryn Whitman (University of Hawai'i at Manoa (US))

Co-authors

Veronica Bindi (University of Hawaii) Cristina Consolandi (University of Hawai'i at Manoa (US)) Claudio Corti (University of Hawai'i at Manoa (US)) Christopher Light (University of Hawai'i at Manoa) Dr Matteo Palermo (University of Hawaii at Manoa) Alexis Popkow (University of Hawaii at Manoa)

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