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A Tight Correlation...
A Tight Correlation between Millimeter and X-Ray Emission in Accreting Massive Black Holes from
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- Ricci, C. (author)
- Beijing University of Technology,Universidad Diego Portales,Diego Portales University
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- Chang, Chin Shin (author)
- Atacama Large Millimeter-submillimeter Array (ALMA)
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- Kawamuro, Taiki (author)
- RIKEN
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- Privon, G. (author)
- National Radio Astronomy Observatory,University of Florida,University of Virginia
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- Mushotzky, Richard (author)
- University of Maryland
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- Trakhtenbrot, Benny (author)
- Tel Aviv University
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- Laor, Ari (author)
- Technion – Israel Institute of Technology
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- Koss, Michael J. (author)
- Space Science Institute,Eureka Scientific
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- Smith, Krista L. (author)
- Southern Methodist University
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- Gupta, Kriti K. (author)
- Universidad Diego Portales,Diego Portales University
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- Dimopoulos, Georgios (author)
- Universidad Diego Portales,Diego Portales University
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- Aalto, Susanne, 1964 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Ros, Eduardo (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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(creator_code:org_t)
- 2023
- 2023
- English.
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In: Astrophysical Journal Letters. - 2041-8213 .- 2041-8205. ; 952:2
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https://doi.org/10.3...
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Abstract
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- Recent studies have proposed that the nuclear millimeter continuum emission observed in nearby active galactic nuclei (AGNs) could be created by the same population of electrons that gives rise to the X-ray emission that is ubiquitously observed in accreting black holes. We present the results of a dedicated high-spatial-resolution (∼60-100 mas) Atacama Large Millimeter/submillimeter Array (ALMA) campaign on a volume-limited (<50 Mpc) sample of 26 hard X-ray (>10 keV) selected radio-quiet AGNs. We find an extremely high detection rate (25/26 or 94 − 6 + 3 % ), which shows that nuclear emission at millimeter wavelengths is nearly ubiquitous in accreting SMBHs. Our high-resolution observations show a tight correlation between the nuclear (1-23 pc) 100 GHz and the intrinsic X-ray emission (1σ scatter of 0.22 dex). The ratio between the 100 GHz continuum and the X-ray emission does not show any correlation with column density, black hole mass, Eddington ratio, or star formation rate, which suggests that the 100 GHz emission can be used as a proxy of SMBH accretion over a very broad range of these parameters. The strong correlation between 100 GHz and X-ray emission in radio-quiet AGNs could be used to estimate the column density based on the ratio between the observed 2-10 keV ( F 2 - 10 keV obs ) and 100 GHz (F 100 GHz) fluxes. Specifically, a ratio log ( F 2 - 10 keV obs / F 100 GHz ) ≤ 3.5 strongly suggests that a source is heavily obscured ( log ( N H / cm − 2 ) ≳ 23.8 ). Our work shows the potential of ALMA continuum observations to detect heavily obscured AGNs (up to an optical depth of one at 100 GHz, i.e., N H ≃ 1027 cm−2), and to identify binary SMBHs with separations <100 pc, which cannot be probed by current X-ray facilities.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
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- art (subject category)
- ref (subject category)
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- By the author/editor
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Ricci, C.
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Chang, Chin Shin
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Kawamuro, Taiki
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Privon, G.
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Mushotzky, Richa ...
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Trakhtenbrot, Be ...
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show more...
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Laor, Ari
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Koss, Michael J.
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Smith, Krista L.
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Gupta, Kriti K.
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Dimopoulos, Geor ...
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Aalto, Susanne, ...
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Ros, Eduardo
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Subatomic Physic ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Fusion Plasma an ...
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Chalmers University of Technology