Solar proton events at the end of the 23rd and start of the 24th solar cycle recorded in the PAMELA experiment

• The PAMELA magnetic spectrometer was launched into a near-Earth orbit on board the Resurs-DK1 satellite in June 2006; in December 2006, it recorded the last strong solar high-energy particle event of the 23rd solar cycle. A deficit was thereafter observed in solar energetic particle events because of the lengthy solar activity minimum and the weak evolution of the next (24th) solar cycle. As a result, only a few solar events involving protons with energies of more than 100 MeV were recorded between 2010 and 1012. This work presents the preliminary results from measurements of charged particle fluxes in these events, recorded by the Pamela spectrometer.

Subject headings

NATURVETENSKAP  -- Fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

Keyword

Charged particle flux

High-energy particles

Magnetic spectrometers

Measurements of

Near-Earth orbits

Solar activity

Solar energetic particle events

Solar proton events

Protons

Spectrometers

Solar energy

Publication and Content Type

ref (subject category)

art (subject category)