Fermi-lat Measurement Of Cosmic-ray Positron Spectrum Using The Earth's Magnetic Field

Details Fermi-lat Measurement Of Cosmic-ray Positron Spectrum Using The Earth's Magnetic Field Fermi-lat Measurement Of Cosmic-ray Positron Spectrum Using The Earth's Magnetic Field

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21913506s&link_type=abstract

American Astronomical Society, AAS Meeting #219, #135.06

Astronomy and Astrophysics

Astronomy

Scientific paper

With a precise measurement of the combined Cosmic-Ray electron plus positron spectrum, the Fermi Large Area Telescope (LAT) has proven to be an excellent electron detector.
Since the LAT does not have a magnetic field for charge separation, it cannot distinguish electrons from positrons on an event by event basis.
However, we can exploit the Earth's magnetic field to effectively separate negatively and positively charged particles.
With the aid of a precise tabulation of the geomagnetic field, we are able to predict trajectories of particles in this field and use this information to discriminate between positrons and electrons.
We have used this technique for the first time to measure the electron-only spectrum, the positron-only spectrum, and the positron fraction, all between 20 GeV and 200 GeV.

Affiliated with

Also associated with

No associations

Rating

Fermi-lat Measurement Of Cosmic-ray Positron Spectrum Using The Earth's Magnetic Field does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Fermi-lat Measurement Of Cosmic-ray Positron Spectrum Using The Earth's Magnetic Field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fermi-lat Measurement Of Cosmic-ray Positron Spectrum Using The Earth's Magnetic Field will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1575339