Detectivity of Unidentified Egret Sources as Gamma-Ray Pulsars with the Magic Telescope |
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| Authors: | R Orduña C Baixeras A Carramiñana V Fonseca |
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| Institution: | (1) Physics Department, Universitat Autónoma de Barcelona, Barcelona, Spain;(2) Instituto Nacional de Astrofisica, óptica y Electrónica, Luis Enrique Erro, 1, Tonantzintla, Puebla, México, Spain;(3) Physics Department, Universidad Complutense de Madrid, Madrid, Spain |
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| Abstract: | Most of the unidentified gamma ray sources detected near the Galactic plane by EGRET aboard CGRO are expected to be gamma
ray pulsars. We present a study about the detectability and identification of some unidentified EGRET sources with the MAGIC
telescope. We list some unidentified gamma ray sources from the third EGRET catalogue to be detected with MAGIC taking into
account some important conditions such as the variability parameter of the source, spectral index, inclusion in the GeV catalogue
(ApJ 488, 1997, p. 872) and possible associations with known X-ray/radio sources located within the error box of the unidentified
gamma ray source. We show the required observation time of these gamma ray pulsar candidates to be detected by MAGIC telescope
considering reasonable values of cut-off energy. To be more realistic, we have chosen the zenith angle corresponding to the
source culmination in the simulation of the effective area A since the observation time is function of the effective area.
In addition to this study, it is very important to consider the extrapolated EGRET flux at MAGIC energies above 30 GeV of
the gamma ray pulsar candidates taking the MAGIC sensitivity. |
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| Keywords: | pulsars unidentified gamma-ray sources cherenkov telescopes |
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