Statistical Properties of Narrow-Line Seyfert 1 galaxies

Abstract

The number of publications considering Narrow-Line Seyfert 1 galaxies has increased dramatically in recent years. Especially after the launch of the X-ray missions ROSAT and ASCA, Narrow-Line Seyfert 1s have become very popular. In these proceedings I will give an overview of how they are distributed over the electromagnetic spectrum. I will describe what we know about them at radio, infrared, optical, and X-ray bands, and how they differ and how they are similar to Broad-Line Seyfert 1s. Finally I will introduce a method to find them with high probability.

Invited talk presented at the Joint MPE,AIP,ESO workshop on NLS1s, Bad Honnef, Dec. 1999, to appear in New Astronomy Reviews; also available at http://wave.xray.mpe.mpg.de/conferences/nls1-workshop

References in corpus (4)

• A Comprehensive Spectral and Variability Study of Narrow-Line Seyfert 1 Galaxies Observed by ASCA: II. Spectral Analysis and Correlations
• A Comprehensive Spectral and Variability Study of Narrow-Line Seyfert 1 Galaxies Observed by ASCA: I. Observations and Time Series Analysis
• X-ray Spectra of the RIXOS source sample
• New Mid-Infrared Diagnostic of the Dusty Torus Model for Seyfert Nuclei

Cited by in corpus (22)

• Compact steep-spectrum and peaked-spectrum radio sources
• A Complete Sample of Soft X-ray Selected AGN: II. Statistical Analysis
• Properties of flat-spectrum radio-loud Narrow-Line Seyfert 1 Galaxies
• A Complete Sample of Soft X-ray Selected AGN: I. The Data
• A Spectropolarimetric Atlas of Seyfert 1 Galaxies
• Statistical properties of local active galactic nuclei inferred from the RXTE 3-20 keV all-sky survey
• Narrow-line Seyfert 1 Galaxies from the Sloan Digital Sky Survey Early Data Release
• Radio-emitting narrow-line Seyfert 1 galaxies in the JVLA perspective
• Parent population of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies
• Compact steep-spectrum sources as the parent population of flat-spectrum radio-loud NLS1s
• Chandra Observations of X-ray Weak Narrow-Line Seyfert 1 Galaxies
• [O III] line properties in two samples of radio-emitting narrow-line Seyfert 1 galaxies
• Probing narrow-line Seyfert 1 galaxies in the southern hemisphere
• Radio morphology of southern narrow-line Seyfert 1 galaxies with Very Large Array observations
• Reverberation Mapping of the Intermediate Mass Nuclear Black Hole in SDSS J114008.71+030711.4
• The Radio Structure of the Narrow-Line Seyfert 1 Mrk 783 with VLBA and e-MERLIN
• Broadband X-ray observations of four gamma-ray narrow-line Seyfert 1 galaxies
• High-redshift Narrow-line Seyfert 1 Galaxies: A Candidate Sample
• First XMM-Newton study of two Narrow-Line Seyfert 1 galaxies discovered in the Sloan Digital Sky Survey
• On the Unified View of Extragalactic Sources based on their Broadband Emission Properties
• Hunting for the nature of the enigmatic narrow-line Seyfert 1 galaxy PKS 2004-447
• A redshifted excess in the broad emission lines after the flare of the $\gamma$-ray narrow-line Seyfert 1 PKS 2004-447