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The Astrophysical Journal
Article . 2018 . Peer-reviewed
License: IOP Copyright Policies
Data sources: Crossref
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https://dx.doi.org/10.48550/ar...
Article . 2018
License: arXiv Non-Exclusive Distribution
Data sources: Datacite
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The Hunt for Intermediate-mass Black Holes in the JWST Era

Authors: Jenna M. Cann; Claudio Ricci; Claudio Ricci; Claudio Ricci; N. P. Abel; Mario Gliozzi; Nathan J. Secrest; +2 Authors

The Hunt for Intermediate-mass Black Holes in the JWST Era

Abstract

AbstractIntermediate-mass black holes (IMBHs), with masses between 100–105M⊙, fill the gap between stellar mass black holes and the supermassive black holes that reside in galaxy centers. While IMBHs are crucial to our understanding of black hole seed formation, black holes of less than ≈104M⊙have so far eluded detection by traditional searches. Observations of the infrared coronal lines (CLs) offer us one of the most promising tools to discover IMBHs in galaxies. We have modeled the infrared emission line spectrum that is produced by gas photoionized by an active galactic nucleus (AGN) radiation field and explored, for the first time, the dependence of the infrared CL spectrum on black hole mass over the range of 102–108M⊙. We show that as the black hole mass decreases, the hardening of the spectral energy distribution of the accretion disk causes infrared coronal lines with the highest ionization potentials to become prominent, revealing a powerful probe of black hole mass in AGNs. We identify key emission line ratios that are most sensitive to black hole mass in the 1–30μm range. With the unprecedented sensitivity of theJames Webb Space Telescope, a large number of CLs will be detectable for the first time, providing important insight into the existence and properties of IMBHs in the local universe, and potentially revolutionizing our understanding of this class of object.

Related Organizations
Keywords

Astrophysics of Galaxies (astro-ph.GA), FOS: Physical sciences, Astrophysics - Astrophysics of Galaxies

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
45
Top 10%
Average
Top 10%
Green
gold