Anisotropy analysis of positron data with the PAMELA experiment

• The PAMELA experiment is carried out on board of satellite the Resurs DK1 since 2006 for precision study of cosmic ray antiparticles. The instrument is equipped with magnetic spectrometer, silicon-tungsten imaging electromagnetic calorimeter, neutron detector which give possibility to separate electron and positron over wide energy range up to hundreds GeVs and to measure their incoming direction with accuracy about 2 degree. For each detected particle a space arriving direction was reconstructed using trajectory inside the instrument and the satellite position on the orbit. Backtracking in geomagnetic field was done to obtain initial spatial distribution of particles outside of the Earth magnetosphere. This paper discuss a result of search a possible local sources by anisotropy analysis of positron data. 

Subject headings

NATURVETENSKAP  -- Fysik -- Subatomär fysik (hsv//swe)

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

Keyword

Anisotropy

Cosmic ray

Electron

Positron

Cosmology

Electrons

Geomagnetism

Magnetosphere

Orbits

Positrons

Anisotropy analysis

Arriving direction

Distribution of particles

Earth magnetosphere

Electromagnetic calorimeter

Geomagnetic fields

Magnetic spectrometers

Satellite position

Cosmic rays

Publication and Content Type

ref (subject category)

kon (subject category)