On the Origin of Galactic TeV Unidentified Sources(Chapter 6. SN1006 Milenium Special Session, The Extreme Universe in the Suzaku Era)

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We study the emission from an old supernova remnant (SNR) with an age of around 10^5 yrs. We expect that when the SNR age is around 10^5 yrs, proton acceleration is efficient enough to emit TeV γ-rays, while the electron acceleration is limited by the synchrotron loss, so that both TeV and X-rays are dominated by hadronic emissions. For old SNRs capable of generating TeV γ-ray emitting particles, we calculated the ratio of TeV γ-ray (1-10TeV) to X-ray (2-10keV) energy flux and found that it can be more than〜10^2. Such a source showing large flux ratio may be a possible origin of recently discovered unidentified TeV sources.
理論物理学刊行会の論文
2007-12-19