English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Thesis

Das Spektrum der kosmischen Elektronen gemessen mit H.E.S.S.

MPS-Authors
/persons/resource/persons30436

Egberts,  Kathrin
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

External Ressource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Egberts, K. (2005). Das Spektrum der kosmischen Elektronen gemessen mit H.E.S.S. Diploma Thesis, Ruprecht-Karls Universität, Fakultät für Physik und Astronomie, Heidelberg.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0011-8800-9
Abstract
This work presents a new method for gamma-hadron separation for the H.E.S.S. experiment and its application to the analysis of cosmic ray electrons. "Random Forest" is a classification algorithm. It demonstrates good separation power and agreement with the H.E.S.S. standard analysis. Because of the small differences between the air shower images of gammas and electrons it can be used for the analysis of cosmic ray electrons. The proof for being electrons is done by analysing the height of the interaction maximum. The main result of this work is the energy spectrum of the cosmic ray electrons. It has low statistical but big systematic errors. The systematic errors are due to the background estimation based on Monte Carlo simulations. The spectrum is compatible with previous measurements, it has a spectral index of 3.6 +- 0.1 and a flux at 1 TeV of 62+-16 GeV2m-2s-1sr-1. At energies higher than 1 TeV there is some indication for an excess in the shape of the spectrum. This excess can be interpreted as contribution of local sources.