Wavelet analysis of a large sample of AGN at high radio frequencies

2008/07/11 by T. Hovatta, H. J. Lehto, M. Tornikoski
Earth and Planetary Sciences · Physics and Astronomy · #Artificial intelligence #Astrophysics #Astrophysics and Cosmic Phenomena #Computational physics #Computer science #Continuous wavelet transform #Discrete wavelet transform #Flux (metallurgy) #Fourier analysis #Fourier transform #Geophysics and Gravity Measurements #Materials science #Morlet wavelet #Physics #Quantum mechanics #Radio Astronomy Observations and Technology #Sample (material) #Statistical physics #Wavelet #Wavelet transform #astro-ph

paper · pdf · doi:10.1051/0004-6361:200810200

14 pages, 10 figures, A&A in press

arxiv created 2008/07/11 · openalex publication_date 2008/07/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Aims. We have studied the characteristic timescales of 80 AGNs at 22, 37 and 90 GHz examining the properties of the wavelet method and comparing them to traditional Fourier-based methods commonly used in astronomy.

Citations

• The Fastest Relativistic Jets: VLBA Observations of Blazars with Apparent Speeds Exceeding 25c
• The Highly Relativistic Kiloparsec‐Scale Jet of the Gamma‐Ray Quasar 0827+243
• The Structure and Motions of the 3C 120 Radio Jet on Scales of 0.6–300 Parsecs
• Sub‐Milliarcsecond Imaging of Quasars and Active Galactic Nuclei. III. Kinematics of Parsec‐scale Radio Jets
• Radio Jet–Ambient Medium Interactions on Parsec Scales in the Blazar 1055+018
• Optical variability of PKS 0736+017
• A massive binary black-hole system in OJ 287 and a test of general relativity