Many of the unidentified Egret sources are believed to be young pulsars.
Such young not-identified pulsars should be surrounded by pulsar wind
nebulae which are at present well established TeV gamma-ray sources
(like Vela X, MSH 15-52 and G0.9+0.1). Moreover, other type of
gamma-ray sources are likely, i.e. binary systems, molecular clouds,
supernovae
remnants, massive stars. The Milagro exp
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