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- W2963760003 abstract "We discuss the link between the nonthermal Xradiation and TeV γ-ray emission from SN 1006, and study the capabilities of both electronic and nucleonic models for explanation of the TeV flux observed from the northeast rim of SN 1006. We show that the interpretation of the TeV radiation by the inverse Compton scattering of electrons on 2.7 K cosmic microwave background radiation is possible, however due to the escape of high energy electrons, the γ-ray emission should be significantly contributed not only from the rim, but also from the inner parts of the remnant. This implies an angular size of the TeV γ-ray emission larger than the size of the nonthermal X-radiation. In this scenario the magnetic field in the rim should not exceed 10μG. Then, in order to allow acceleration of particles well beyond 10 TeV the shock speed should be high, ≥ 3000 km s−1. The latter condition gives preference to a large distance to the source, d ' 2 kpc or so which is in the limits of distances currently discussed in the literature. On the other hand, a larger magnetic field of order 100μG and smaller shock speeds (and therefore a small distance to the source of about 1 kpc) are not excluded. In that case the observed TeV radiation can be explained by shock accelerated protons in the rim through production and subsequent decay of π0-mesons. Contrary to IC radiation, the π-decay γ-ray source coincides essentially with the rim, and therefore it could be recognized by a relatively compact angular width. Both the electronic and nucleonic models require high efficiency of particle acceleration close to the Bohm limit, and large total energy in accelerated particles at the level of respectively 1% and 10% of the kinetic energy of explosion of SN 1006. We discuss observational possibilities to distinguish between electronic and nucleonic origins of γ-radiation." @default.
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- W2963760003 title "ON THE ORIGIN OF TEV RADIATION OF SN 1006" @default.
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