SIMBAD references

2011MNRAS.413.2365C - Mon. Not. R. Astron. Soc., 413, 2365-2370 (2011/June-1)

γ-ray variability of radio-loud narrow-line Seyfert 1 galaxies.

CALDERONE G., FOSCHINI L., GHISELLINI G., COLPI M., MARASCHI L., TAVECCHIO F., DECARLI R. and TAGLIAFERRI G.

Abstract (from CDS):

The recent detection of γ-ray emission from four radio-loud narrow-line Seyfert 1 galaxies suggests that the engine driving the active galactic nuclei (AGN) activity of these objects shares some similarities with that of blazars, namely the presence of a γ-ray emitting, variable jet of plasma closely aligned to the line of sight. In this work we analyse the γ-ray light curves of the four radio-loud narrow-line Seyfert 1 galaxies for which high-energy γ-ray emission has been discovered by Fermi/LAT, in order to study their variability. We find significant flux variability in all the sources. This allows us to exclude a starburst origin of the γ-ray photons and confirms the presence of a relativistic jet. Furthermore, we estimate the minimum e-folding variability time-scale (3–30 d) and infer an upper limit for the size of the emitting region (0.2–2 pc, assuming a relativistic Doppler factor δ= 10 and a jet aperture of θ= 0.1 rad).

Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS

Journal keyword(s): galaxies: individual: PMN J0948+0022 - galaxies: individual: 1H 0323+342 - galaxies: individual: PKS 1502+036 - galaxies: individual: PKS 2004-447 - galaxies: jets - gamma-rays: galaxies

Simbad objects: 8

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2011MNRAS.413.2365C and select 'bookmark this link' or equivalent in the popup menu


2019.10.18-12:01:00

© Université de Strasbourg/CNRS

    • Contact