Search for Obscured Nucleus in a Luminous IRAS Galaxy NGC 6240

Details Search for Obscured Nucleus in a Luminous IRAS Galaxy NGC 6240 Search for Obscured Nucleus in a Luminous IRAS Galaxy NGC 6240

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999stin...9900656l&link_type=abstract

Technical Report, CAL-3161 Depts. of Astronomy and Physics

Astronomy and Astrophysics

Astronomy

Active Galactic Nuclei, Galactic Radiation, Galaxies, Starburst Galaxies, Infrared Spectra, Luminosity, X Ray Timing Explorer

Scientific paper

IRAS discovered very luminous objects which emit the vast majority of their radiation in the infrared wavelength. The energy source of such a tremendous amount of emission is not understood. Starburst and active galactic nuclei (AGN) are thought to be the origin of their power. X-ray observations are expected to be able to reveal the characteristics of the AGN component. However, some are very X-ray quiet, because the AGN is thought to be obscured by a large column density. In order to determine the primary luminosity of the nucleus, we need an X-ray observation with a wide energy band at least up to several tens of keV. We propose to observe NGC 6240, one of the luminous IRAS galaxies, to investigate the characteristics of its AGN, which must be obscured by large column density.

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