Relativistically Smeared Iron Lines in the Spectra of Bright NS LMXB
- Autori: D'Aì, A.; di Salvo, T.; Iaria, R.; Papitto, A.; Matt, G.; Robba, N
- Anno di pubblicazione: 2009
- Tipologia: Capitolo o Saggio (Capitolo o saggio)
- OA Link: http://hdl.handle.net/10447/44522
Abstract
We present preliminary results of a study on three bright accreting low-mass X-ray binaries hosting a neutron star, based on XMM-Newton observations. These sources (GX 340+0, GX 349+2 and SAX J1808.4-3658) show a broad Fe K alpha iron line in their spectra. This feature can be well described by relativistic line profile in each case; the good spectral resolution of the EPIC/PN and the high statistics spectra allow to put very good constraints on the disk geometry and ionization stage of the reflecting matter.