Abstract
Line emission at 478 and 1275 keV is expected from the radioactive isotopes 7 Be and 22 Na, produced during the explosion of classical novae. There is also continuum and 511 keV line emission from electron-positron annihilation with positrons coming from 13 N and 18 F β + decays. Up to now, gamma-rays from novae have not been detected in spite of the systematic observation of novae with the COMPTEL instrument onboard the CGRO. INTEGRAL/SPI offers new possibilities to detect novae, but the current inflight measured sensitivities make this task very hard. However, new instruments planned for the next decade, like the gamma-ray lens (MAX), the Advanced Compton Telescope (ACT) and the Energetic X-ray Imaging Survey Telescope (EXIST) are very promising. Theoretical expectations of gamma-ray emission are presented with mention of the important impact of nuclear reaction rates uncertainties on them.
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