MPI für Physik / MPI für Physik |
|Reconstruction methods of energy spectra for high redshift sources with the MAGIC Telescope|
|Authors:||Mizobuchi, S.; Aliu, E.; Mazin, D.; Teshima, M.; Wagner, R. M.; Wittek, W.; Yoshii, H.|
|Date of Publication (YYYY-MM-DD):||2006|
|Title of Proceedings:||ICRC 2005|
|Intended Educational Use:||No|
|Abstract / Description:||Very high energy gamma-rays are absorbed in the propagation through the intergalactic space by interaction |
with infrared and visible background photons. Cut-off energies are dependent on the redshift of the emitting
source, and they are expected in the energy range from several tens of GeV to 100 GeV for high redshift
sources like GRBs and distant AGNs. Measurement of these cut-off energies give us a unique opportunity
to put constraints on the star formation rate in the history of the universe, and on cosmological parameters.
MAGIC is a unique detector to explore this important energy range. The real energy spectrum at the top of
the atmosphere needs to be derived from the observed one using the unfolding method or by model fitting (the
forward folding method), to remove the experimental systematics. In this paper, we discuss the forward folding
method in reconstructing the high-energy gamma-ray spectra observed by MAGIC.
|Classification / Thesaurus:||MAGIC|
|External Publication Status:||published|
|Affiliations:||MPI für Physik|
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