2016/03/14 by E. Järvelä, Järvelä, Emilia, A. Lähteenmäki +1
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astrophysics and Cosmic Phenomena #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Gamma-ray bursts and supernovae #High Energy Astrophysical Phenomena (astro-ph.HE)
paper · pdf · doi:10.48550/arxiv.1603.04400
openalex publication_date 2016/03/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Narrow-line Seyfert 1 galaxies, with their extreme properties, defy our current knowledge of active galactic nuclei and relativistic jet systems. They excite, and might help us answer, many questions concerning the evolution and unification of AGN, but still remain a poorly studied class of AGN as such. We did an extensive study of a large sample of NLS1s using various statistical methods, for example, multiwavelength correlations and principal component analysis. We wanted to examine how and where in NLS1s different kinds of radiation are produced, and how the emission properties are connected to other intrinsic AGN properties. In addition we present the early results of our ongoing research about the large-scale environments of NLS1s. We also introduce the Metsähovi Radio Observatory NLS1 survey and its first results, and show some early results for individual sources.