Tell-Tale Spectral Signatures of MHD-driven Ultra-Fast Outflows in AGNs

Abstract

We aim to explore spectral signatures of the predicted multi-ion UFOs in the broadband X-ray spectra of active galactic nuclei (AGNs) by exploiting an accretion disk wind model in the context of a simple magnetohydrodynamic (MHD) framework. We are focused primarily on examining the spectral dependences on a number of key properties; (1) ionizing luminosity ratio ${\lambda }_{\mathrm{ion}}$, (2) line-of-sight wind density slope $p$, (3) optical/UV-to-X-ray strength ${\alpha }_{\mathrm{OX}}$, (4) inclination $\theta$, (5) X-ray photon index $\Gamma$ and (6) wind density factor $f_D$. With an emphasis on radio-quiet Seyferts in sub-Eddington regime, multi-ion UFO spectra are systematically calculated as a function of these parameters to show that MHD-driven UFOs imprint a unique asymmetric absorption line profile with a pronounced blue tail structure on average. Such a characteristic line signature is generic to the simplified MHD disk-wind models presented in this work due to their specific kinematics and density structure. The properties of these absorption line profiles could be utilized as a diagnostics to distinguish between different wind driving mechanisms or even the specific values of a given MHD wind parameters. We also present high fidelity microcalorimeter simulations in anticipation of the upcoming {\it XRISM}/Resolve and {\it Athena}/X-IFU instruments to demonstrate that such a "tell-tale" sign may be immune to a spectral contamination by the presence of additional warm absorbers and partially covering gas.

accepted to ApJ

References in corpus (41)

• X-ray Properties of Black-Hole Binaries
• Modelling the behaviour of accretion flows in X-ray binaries
• The X-ray-to-Optical Properties of Optically-Selected Active Galaxies Over Wide Luminosity and Redshift Ranges
• Wind from the black-hole accretion disk driving a molecular outflow in an active galaxy
• Black hole feedback in the luminous quasar PDS 456
• The Hard X-ray Spectrum as a Probe for Black-Hole Growth in Radio-Quiet Active Galactic Nuclei
• A Compton-thick Wind in the High Luminosity Quasar, PDS 456
• Ionized outflows from active galactic nuclei as the essential elements of feedback
• On why the Iron K-shell absorption in AGN is not a signature of the local Warm/Hot Intergalactic Medium
• The response of relativistic outflowing gas to the inner accretion disk of a black hole
• Spectrum Synthesis Modeling of the X-ray Spectrum of GRO J1655-40 Taken During the 2005 Outburst
• Multi-dimensional modelling of X-ray spectra for AGN accretion-disk outflows
• Chandra X-ray spectroscopy of the focused wind in the Cygnus X-1 system. I. The non-dip spectrum in the low/hard state
• Magnetically-Driven Accretion-Disk Winds and Ultra-Fast Outflows in PG1211+143
• Anatomy of the AGN in NGC 5548: II. The Spatial, Temporal and Physical Nature of the Outflow from HST/COS Observations
• Evidence for a radiatively driven disc-wind in PDS 456?
• Weak Hard X-ray Emission from Broad Absorption Line Quasars: Evidence for Intrinsic X-ray Weakness
• The origin of ultra-fast outflows in AGN: Monte-Carlo simulations of the wind in PDS 456
• Line-driven disk wind model for ultra-fast outflows in active galactic nuclei -- Scaling with luminosity
• Does the X-ray outflow quasar PDS 456 have a UV outflow at 0.3c?
• Magnetic outflows from turbulent accretion disks: I. Vertical structure & secular evolution
• Evolution of the reverberation lag in GX 339-4 at the end of an outburst
• The impact of accretion disk winds on the X-ray spectrum of AGN: Part 1 - XSCORT
• Resolving the soft X-ray ultra fast outflow in PDS 456
• Multiphase quasar-driven outflows in PG 1114+445. I. Entrained ultra-fast outflows
• Magnetically-driven jets and winds from weakly magnetized accretion disks
• UV line driven disc wind as the origin of ultrafast outflows in AGN
• Variable iron-line emission near the black hole of Markarian 766
• X-ray spectroscopic survey of highly-accreting AGN
• Physical Conditions in Ultra Fast Outflows in AGN
• On the importance of special relativistic effects in modelling ultra-fast outflows
• Using principal component analysis to understand the variability of PDS 456
• Detection of high velocity outflows in Seyfert 1 galaxy Mrk 590
• A Comprehensive Chandra Study of the Disk Wind in the Black Hole Candidate 4U 1630-472
• NuSTAR monitoring of MAXI J1348-630: evidence of high density disc reflection
• Relativistic components of the Ultra-Fast Outflow in the Quasar PDS 456 from Chandra/HETGS, NuSTAR and XMM-Newton observations
• Speed limits for radiation driven SMBH winds
• Modeling Magnetic Disk-Wind State Transitions in Black Hole X-ray Binaries
• Detection of a Multi-Phase Ultra-Fast Wind in the Narrow-Line Seyfert 1 Galaxy Mrk 1044
• A variable magnetic disc wind in the black hole X-ray binary GRS 1915+105?
• Dramatic changes in the observed velocity of the accretion disk wind in MCG-03-58-007 are revealed by XMM-Newton and NuSTAR

Cited by in corpus (7)

• Supermassive Black Hole Winds in X-rays -- SUBWAYS. I. Ultra-fast outflows in QSOs beyond the local Universe
• Delving into the depths of NGC 3783 with XRISM. I. Kinematic and ionization structure of the highly ionized outflows
• Impact of the disk magnetization on MHD disk wind signature
• Unraveling the structure of the stratified ultra-fast outflows in PDS 456 with XRISM
• Constraints on the ultra-fast outflows in the narrow-line Seyfert 1 galaxy Mrk 1044 from high-resolution time- and flux-resolved spectroscopy
• The XMM-Newton and NuSTAR view of IRASF11119+3257. I Detection of multiple UFO components and a very cold corona
• Winds of change: the nuclear and galaxy-scale outflows and the X-ray variability of 2MASS 0918+2117