A Jet Model for the Broadband Spectrum of the Seyfert-1 Galaxy NGC 4051

Abstract

Recent radio VLBI observations of the ~parsec-scale nuclear region of the narrow line Seyfert 1 galaxy NGC 4051 hint toward the presence of outflowing plasma. From available literature we have collected high-quality, high-resolution broadband spectral energy distribution data of the nuclear region of NGC 4051 spanning from radio through X-rays, to test whether the broadband SED can be explained within the framework of a relativistically outflowing jet model. We show that once the contribution from the host galaxy is taken into account, the broadband emission from the active galactic nucleus of NGC 4051 can be well described by the jet model. Contributions from dust and ongoing star-formation in the nuclear region tend to dominate the IR emission even at the highest resolutions. In the framework of the jet model, the correlated high variability of the extreme ultraviolet and X-rays compared to other wavelengths suggests that the emission at these wavelengths is optically thin synchrotron originating in the particle acceleration site(s) in the jet very close (few $r_g=G{M}_{BH}/c^2$) to the central supermassive black hole of mass M_{BH}. Our conclusions support the hypothesis that narrow line Seyfert 1 galaxies (which NGC 4051 is a member of) harbor a "jetted" outflow with properties similar to what has already been seen in low-luminosity AGNs and stellar mass black holes in hard X-ray state.

Accepted for publication in ApJ. 24 pages, 2 figures, 2 tables (in aastex preprint format)

References in corpus (17)

• X-ray Properties of Black-Hole Binaries
• The ACS Virgo Cluster Survey. VIII. The Nuclei of Early-Type Galaxies
• Radio-Loudness of Active Galactic Nuclei: Observational Facts and Theoretical Implications
• Relativistic X-ray Lines from the Inner Accretion Disks Around Black Holes
• The Fundamental Plane of Accretion Onto Black Holes with Dynamical Masses
• Mapping of the molecular gas inflow towards the Seyfert nucleus of NGC4051 using Gemini NIFS
• XMM-Newton study of the complex and variable spectrum of NGC 4051
• Investigating the nature of narrow-line Seyfert 1 galaxies with high-energy spectral complexity
• A Revised Broad-Line Region Radius and Black Hole Mass for the Narrow-Line Seyfert 1 NGC 4051
• Simultaneous Chandra, CSO and VLA Observations of Sgr A*: The Nature of Flaring Activity
• Results from an extensive simultaneous broadband campaign on the underluminous active nucleus M81*: further evidence for mass-scaling accretion in black holes
• The rapid X-ray variability of NGC 4051
• An absorption origin for the soft excess in Seyfert 1 AGN
• Determining the optimal locations for shock acceleration in magnetohydrodynamical jets
• A Distinctive Disk-Jet Coupling in the Seyfert-1 AGN NGC 4051
• Radio and X-ray variability in the Seyfert galaxy NGC 4051
• Evidence of a Warm Absorber that Varies with QPO Phase in the AGN RE J1034+396

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