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.

Understanding the nature of soft excess with Simbol-X / Ponti G.; Cappi M.; Genghini M.; Matt G.; Petrucci P.O.; Tombesi F.; Vignali C.. - STAMPA. - 79:(2008), pp. 274-275. (Intervento presentato al convegno Simbol-X: the hard X-ray Universe in focus tenutosi a Bologna nel 14-16 maggio (2007)).

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.
2008
Simbol-X: the hard X-ray Universe in focus
274
275
Understanding the nature of soft excess with Simbol-X / Ponti G.; Cappi M.; Genghini M.; Matt G.; Petrucci P.O.; Tombesi F.; Vignali C.. - STAMPA. - 79:(2008), pp. 274-275. (Intervento presentato al convegno Simbol-X: the hard X-ray Universe in focus tenutosi a Bologna nel 14-16 maggio (2007)).
Ponti G.; Cappi M.; Genghini M.; Matt G.; Petrucci P.O.; Tombesi F.; Vignali C.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/51503
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