The jetted NLS1 1H 0323+342: the Rosetta stone for accretion/ejection in AGN
Abstract
A reanalysis of X-ray observations from multiple telescopes reveals significant spectral variability in the nearest gamma-ray narrow-line Seyfert 1 galaxy, attributed to interactions between the X-ray corona and relativistic jet.
1H 0323+342 is the nearest gamma-ray narrow-line Seyfert 1 galaxy (z=0.063). Its X-ray spectrum (0.3-10 keV) is characterised by significant spectral variability observed by many authors, with a backbone with photon index ~2 occasionally superimposed by a hard tail. This spectral variability has been interpreted as the interplay between the X-ray corona and the relativistic jet. The X-ray fluxes in the 0.3-10 keV energy band are generally around ~10^-11 erg cm^-2 s^-1, making it easier to get sufficient statistics even with short exposures. Here I present a reanalysis of all the available X-ray observations with Swift (181 obs), XMM-Newton (7 obs), Chandra (1 obs), and Suzaku (2 obs) performed between 2006 and 2025. Possible interpretations are proposed and discussed.
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