BeppoSAX unveils the nuclear component in NGC 6240

P. Vignati; S. Molendi; G. Matt; M. Guainazzi; L. A. Antonelli; L. Bassani; W. N. Brandt; A. C. Fabian; K. Iwasawa; R. Maiolino; G. Malaguti; A. Marconi; G. G. Perola

BeppoSAX unveils the nuclear component in NGC 6240

P. Vignati, S. Molendi, G. Matt, M. Guainazzi, L. A. Antonelli, L. Bassani, W. N. Brandt, A. C. Fabian, K. Iwasawa, R. Maiolino, G. Malaguti, A. Marconi, G. G. Perola

Research output: Contribution to journal › Review article › peer-review

142 Scopus citations

Abstract

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 L_X/L_bol 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)
Pages (from-to)	L57-L60
Journal	Astronomy and Astrophysics
Volume	349
Issue number	2
State	Published - 1999

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Cite this

@article{d9e934ac0723426295994a58e4575b54,

title = "BeppoSAX unveils the nuclear component in NGC 6240",

abstract = "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.",

author = "P. Vignati and S. Molendi and G. Matt and M. Guainazzi and Antonelli, {L. A.} and L. Bassani and Brandt, {W. N.} and Fabian, {A. C.} and K. Iwasawa and R. Maiolino and G. Malaguti and A. Marconi and Perola, {G. G.}",

year = "1999",

language = "English (US)",

volume = "349",

pages = "L57--L60",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

number = "2",

}

TY - JOUR

T1 - BeppoSAX unveils the nuclear component in NGC 6240

AU - Vignati, P.

AU - Molendi, S.

AU - Matt, G.

AU - Guainazzi, M.

AU - Antonelli, L. A.

AU - Bassani, L.

AU - Brandt, W. N.

AU - Fabian, A. C.

AU - Iwasawa, K.

AU - Maiolino, R.

AU - Malaguti, G.

AU - Marconi, A.

AU - Perola, G. G.

PY - 1999

Y1 - 1999

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0002297247&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0002297247&partnerID=8YFLogxK

M3 - Review article

AN - SCOPUS:0002297247

SN - 0004-6361

VL - 349

SP - L57-L60

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 2

ER -

BeppoSAX unveils the nuclear component in NGC 6240

Abstract

All Science Journal Classification (ASJC) codes

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