The nature of the soft excess and the origin of the spectral shape seen in AGN are still highly debated. Two different physical models can explain most spectral complexities seen in the 0.2-10 keV energy band. One involves a strong reflection component from the innermost parts of an accretion disc, the other a high column density of ionized absorbing material moving at relativistic speed. These two models are degenerate at energies below 10 keV, but predict a distinctively different behaviour at higher energies. It is shown here how, with Simbol-X, it will be possible to disentangle the two scenarios obseving the spectral shape og AGN at energies higher than 10 keV.
Ponti G., Cappi M., Genghini M., Matt G., Petrucci P.O., Tombesi F., et al. (2008). Understanding the nature of soft excess with Simbol-X. s.l : Memories of SAIt.
Understanding the nature of soft excess with Simbol-X
PONTI, GABRIELE;TOMBESI, FRANCESCO;VIGNALI, CRISTIAN
2008
Abstract
The nature of the soft excess and the origin of the spectral shape seen in AGN are still highly debated. Two different physical models can explain most spectral complexities seen in the 0.2-10 keV energy band. One involves a strong reflection component from the innermost parts of an accretion disc, the other a high column density of ionized absorbing material moving at relativistic speed. These two models are degenerate at energies below 10 keV, but predict a distinctively different behaviour at higher energies. It is shown here how, with Simbol-X, it will be possible to disentangle the two scenarios obseving the spectral shape og AGN at energies higher than 10 keV.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
