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Active galactic nuclei with high-resolution X-ray spectroscopy

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arxiv 2302.10930 v2 pith:DDVG5QC7 submitted 2023-02-21 astro-ph.HE astro-ph.GA

Luigi C. Gallo , Jon M. Miller , Elisa Costantini This is my paper · ORCID
classification astro-ph.HEastro-ph.GA
keywords activegalactichigh-resolutionnucleispectroscopyx-rayxrismabsorbers
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The imminent launch of XRISM will usher in an era of high-resolution X-ray spectroscopy. For active galactic nuclei (AGN) this is an exciting epoch that is full of massive potential for uncovering the ins and outs of supermassive black hole accretion. In this work, we review AGN research topics that are certain to advance in the coming years with XRISM and prognosticate the possibilities with Athena and Arcus. Specifically, our discussion focuses on: (i) the relatively slow moving ionised winds known as warm absorbers and obscurers; (ii) the iron emitting from different regions of the inner and outer disc, broad line region, and torus; and (iii) the ultrafast outflows that may be the key to understanding AGN feedback.

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Cited by 11 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. XRISM analysis of the complex Fe K$\alpha$ line in Centaurus A

    astro-ph.HE 2025-07 conditional novelty 7.0 of 10

    XRISM's precision X-ray detector shows the iron K-alpha line of Centaurus A is a narrow doublet plus a broad component, implying emitting gas spans roughly 0.001 to 10 parsecs.

  2. Delving into the depths of NGC 3783 with XRISM. I. Kinematic and ionization structure of the highly ionized outflows

    astro-ph.HE 2025-06 conditional novelty 7.0 of 10

    XRISM spectroscopy of NGC 3783 reveals six outflow components; one broad Fe XXVI absorber moves at 0.05 c with kinetic luminosity 0.8-3% of bolometric.

  3. XRISM Reveals a Remnant Torus in the Low-Luminosity AGN M81*

    astro-ph.HE 2025-05 conditional novelty 7.0 of 10

    XRISM resolves the neutral iron K-alpha doublet in the low-luminosity AGN M81*, finding a narrow, unshifted line consistent with emission at r >= 2.7 x 10^4 GM/c^2, likely a remnant torus.

  4. XRISM Spectroscopy of Variable Accretion-driven Disk Winds in NGC 4151: When, Where, and How Fast Outflows are Launched

    astro-ph.HE 2026-08 conditional novelty 6.0 of 10

    Fast X-ray winds in NGC 4151 are strongest about 10 ks after flares and during faint, hard states, favoring a compact, clumpy, magnetically driven launch site.

  5. Dissecting the Nuclear Structure of NGC 5548 with XRISM. I. Physical Properties of the Highly Ionized Outflows

    astro-ph.HE 2026-08 conditional novelty 6.0 of 10

    First detection of Fe XXV and Fe XXVI absorption in NGC 5548 with XRISM shows a multiphase outflow with a broken power-law absorption measure distribution.

  6. The emergence of X-ray emission lines during relativistic radio-jet formation in the changing-look active galactic nucleus 1ES 1927+654

    astro-ph.HE 2026-07 conditional novelty 6.0 of 10

    X-ray emission lines and a broad iron feature emerged in changing-look AGN 1ES 1927+654 concurrently with radio-jet formation and declining ionized outflows from 2022 to 2025.

  7. XRISM Spectroscopy of Accretion-Driven Wind Feedback in NGC 4151

    astro-ph.HE 2025-07 conditional novelty 6.0 of 10

    XRISM spectra of NGC 4151 reveal up to six simultaneous wind components, and two ultra-fast outflows carry kinetic power exceeding 0.5 percent of Eddington, enough for galaxy-scale feedback.

  8. A Spectral Energy Distribution Variability Study of the Eclipsing AGN NGC 6814

    astro-ph.HE 2025-06 conditional novelty 6.0 of 10

    Multi-epoch Swift SED fits of NGC 6814 find the accretion disk inner edge at 58 to 270 gravitational radii, far outside the ISCO, suggesting a non-standard inner disk.

  9. Unraveling the structure of the stratified ultra-fast outflows in PDS 456 with XRISM

    astro-ph.HE 2025-06 conditional novelty 6.0 of 10

    Spectra from XRISM suggest the five fast X-ray outflows in PDS 456 are stratified by ionization, with a weak and not statistically significant trend v_out proportional to the ionization parameter to the power 0.14, pl...

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

    astro-ph.HE 2025-01 conditional novelty 5.0 of 10

    Time-variable Fe UTA absorption in NGC 3783 implies a warm absorber density above 10^12.3 m^-3 at 0.27 pc, identifying a likely failed wind.

  11. Power of simultaneous X-ray and UV high-resolution spectroscopy for probing AGN outflows

    astro-ph.HE 2024-12 conditional novelty 5.0 of 10

    Simultaneous X-ray and UV spectroscopy with the proposed Arcus mission would measure the density, location, and kinetic power of AGN outflows and extend high-resolution wind studies to redshift ~0.8.

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