The direct nuclear X-ray emission of the ultraluminous IRAS galaxy NGC 6240 has been observed by BeppoSAX. It is seen through an absorber with NH ∼ 2 × 1024 cm-2. The 2-10 keV X-ray luminosity of > 1044 erg s-1 definitely proves that a powerful AGN is hosted in this galaxy, despite the LINER optical appearance. Assuming the typical LX/Lbol ratio for quasars, our result implies that it is the AGN and not the starburst that dominates the energy output of NGC 6240.
|Original language||English (US)|
|Journal||Astronomy and Astrophysics|
|State||Published - Dec 1 1999|
All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics
- Space and Planetary Science