The Infrared-X-ray continuum correlation in Active Galactic Nuclei

Abstract

The correlation between the soft X-ray and near infrared emission from AGN is analysed using composite models by the code SUMA. We find new evidences for differences in ranges of parameters which characterize the NLR of Seyfert galaxies and LINERs. Results obtained by modelling the Einstein and the ROSAT samples of galaxies are in full agreement. In order to fit the infrared and X-ray continua, an eta factor is defined, which accounts for the emitting area of the cloud. If the infrared emission is due to bremsstrahlung and comes from the same cloud producing the soft X-rays, the eta values obtained from both emissions must be the same. Therefore, if eta_IR < eta_soft-X there must be a strong contribution of soft X-rays from the active centre. From the eta values we expect to identify the objects that could present strong variability. \

11 pages,13 figures, in press in MNRAS. in press in MNRAS

References in corpus (5)

• X-ray Properties of LINERs and Low-luminosity Seyfert Galaxies Observed with ASCA. I. Observations and Results
• Ice features in the mid-IR spectra of galactic nuclei
• Near-Infrared Coronal Lines in Narrow-Line Seyfert 1 Galaxies
• The Soft X-ray Properties of Nearby Low-Luminosity Active Galactic Nuclei and their Contribution to the Cosmic X-ray Background
• The signature of high velocity gas in the spectra of NGC 4151

Cited by in corpus (5)

• The Infrared Continuum of Active Galaxies
• The complex structure of low luminosity AGN : NGC 4579
• The peculiar galaxy Mkn 298 revisited through integral field spectroscopy
• The LLAGN in the centre of the Galaxy
• Comparison of dust-to-gas ratios in luminous, ultraluminous, and hyperluminous infrared galaxies