A failed wind candidate in NGC 3783 from the 2001 year campaign with Chandra/HETGS

Abstract

We reanalyze the Chandra/HETGS observations of NGC 3783 from the campaign in the year 2001, identifying significant spectral variations in the Fe unresolved transition array (UTA) over timescales of weeks to months. These changes correlate with a $1.4-2$ fold increase in the ionizing continuum and exceed $10\sigma$ significance. The variations primarily originate from a low-ionization state ($\log \xi =1.65$) component of the warm absorber. Time-dependent photoionization modelling confirms the sensitivity of this low-ionization component to continuum variations within the Fe UTA band. Local fitting indicates a lower density limit of $>10^{12.3}{\mathrm{m}}^{-3}$ at $3\sigma$ statistical uncertainty, with the component located within $0.27\mathrm{pc}$. Our findings suggest that this low-ionization component is a potential failed wind candidate.

Accepted for publication in A&A, 10 pages, 12 figures

References in corpus (22)

• The Ionized Gas and Nuclear Environment in NGC 3783. I. Time-Averaged 900 ks Chandra Grating Spectroscopy
• The Ionized Gas and Nuclear Environment in NGC 3783. IV. Variability and Modeling of the 900 ks CHANDRA Spectrum
• Toward a Self Consistent Model of the Ionized Absorber in NGC 3783
• Soft X-Ray Absorption by Fe${}^{0+}$ to Fe${}^{15+}$ in Active Galactic Nuclei
• Ionized outflows in local luminous AGN: what are the real densities and outflow rates?
• A Long Look at NGC 3783 with the XMM-Newton Reflection Grating Spectrometers
• Multi-wavelength study of the Seyfert 1 galaxy NGC 3783 with XMM-Newton
• The Ionized Gas and Nuclear Environment in NGC 3783 V. Variability and Modeling of the Intrinsic Ultraviolet Absorption
• Chasing obscuration in type-I AGN: discovery of an eclipsing clumpy wind at the outer broad-line region of NGC 3783
• Multiwavelength campaign on Mrk 509 VIII. Location of the X-ray absorber
• Dynamical and Spectral Modeling of the Ionized Gas and Nuclear Environment in NGC 3783
• The central parsec of NGC 3783: a rotating broad emission line region, asymmetric hot dust structure, and compact coronal line region
• Timing the warm absorber in NGC 4051
• Opacity Variations in the Ionized Absorption in NGC 3783: A Compact Absorber
• Density diagnostics of ionized outflows in active galactic nuclei: X-ray and UV absorption lines from metastable levels in Be-like to C-like ions
• Photoionized emission and absorption features in the high-resolution X-ray spectra of NGC 3783
• Recurring obscuration in NGC 3783
• TPHO: a time-dependent photoionisation model for AGN outflows
• Time Dependent Photoionization Modeling of Warm Absorbers in Active Galactic Nuclei
• Spectral-timing of AGN ionized outflows with Athena
• Time-dependent photoionization spectroscopy of the Seyfert galaxy NGC 3783
• Density calculations of NGC 3783 warm absorbers using a time-dependent photoionization model

Cited by in corpus (2)

• Delving into the depths of NGC 3783 with XRISM. I. Kinematic and ionization structure of the highly ionized outflows
• Delving into the depths of NGC 3783 with XRISM: V. Broad-band modeling of ionized outflows