Variability of Quasars at 10 microns

Abstract

Twenty five low redshift quasars have been monitored for several decades at five near- and mid-infrared wavelengths to detect rapid variations which would indicate that a nonthermal component was present in the "10 micron bump". Such variability has apparently been detected in several radio loud quasars and in the radio quiet quasar PG1535+547. In addition, the structure function of PG1226+023 shows that an apparently periodic component is present in its near-infrared emission.

AAS LaTex, 33 figures in 2 postscript files, AJ, accepted

Cited by in corpus (32)

• The Population of Viscosity- and Gravitational Wave-Driven Supermassive Black Hole Binaries Among Luminous AGN
• The subarcsecond mid-infrared view of local active galactic nuclei: II. The mid-infrared--X-ray correlation
• The subarcsecond mid-infrared view of local active galactic nuclei: I. The N- and Q-band imaging atlas
• The Detection of Silicate Emission from Quasars at 10 and 18 Microns
• Spitzer IRS spectra of a large sample of Seyfert galaxies: a variety of infrared SEDs in the local AGN population
• The multiwavelength variability of 3C 273
• Parsec-scale dust distributions in Seyfert galaxies - Results of the MIDI AGN snapshot survey
• Subaru Mid-infrared Imaging of the Quadruple Lenses PG1115+080 and B1422+231: Limits on Substructure Lensing
• Heavy X-ray Absorption in Soft X-ray Weak Active Galactic Nuclei
• Dust-Deficient Palomar-Green Quasars and the Diversity of AGN Intrinsic IR Emission
• Decomposing Dusty Galaxies. I. Multi-Component Spectral Energy Distribution Fitting
• Mid-IR Variability and Dust Reverberation Mapping of Low-$z$ Quasars. I. Data, Methods and Basic Results
• Keck Mid-Infrared Imaging of the QSO 2237+0305
• Optical/Near-Infrared Imaging of Infrared-Excess Palomar-Green QSOs
• The Intrinsic Far-infrared Continua of Type-1 Quasars
• Mid-Infrared Variability from the Spitzer Deep, Wide-Field Survey
• Subaru Mid-infrared Imaging of the Quadruple Lenses. II. Unveiling Lens Structure of MG0414+0534 and Q2237+030
• Mid-Infrared Spectroscopic Properties of Ultra-Luminous Infrared Quasars
• Infrared Spectral Energy Distribution and Variability of Active Galactic Nuclei: Clues to the Structure of Circumnuclear Material
• Does the AGN Unified Model Evolve with Redshift? Utilizing the X-ray Background to Predict the Mid-Infrared Emission of AGN
• X-ray spectral variability in PG1535+547: the changing-look of a 'soft X-ray weak' AGN
• XMM-NEWTON Observations of Red AGN
• Dust Reverberation of 3C273: torus structure and lag -- luminosity relation
• Gravitational microlensing of AGN dusty tori
• A Multiwavelength study of NLS1s galaxies from the Second Byurakan Survey
• Ensemble Variability of Near-Infrared-Selected Active Galactic Nuclei
• Examining the Infrared Variable Star Population Discovered in the Small Magellanic Cloud Using the SAGE-SMC Survey
• High Resolution Mid-IR Images of the Nucleus of M81
• Selection of AGN candidates in the GOODS-South Field through SPITZER/MIPS 24 $\mu$m variability
• Infrared variable stars in the compact elliptical galaxy M32
• ISO continuum observations of quasars at z=1-4 I.Spectral energy distributions of quasars from the UV to far-infrared
• The nearby QSO host I Zw 1: The stellar disk and adjacent objects