Testing the Linear Relationship between Black Hole Mass and Variability Timescale in Low-luminosity AGNs at Submillimeter Wavelengths

0583697 - ASÚ 2024 RIV GB eng J - Journal Article
Chen, B. Y. … Total 8 authors
Testing the Linear Relationship between Black Hole Mass and Variability Timescale in Low-luminosity AGNs at Submillimeter Wavelengths.
Astrophysical Journal. Roč. 951, č. 2 (2023), č. článku 33. ISSN 0004-637X. E-ISSN 1538-4357
Research Infrastructure: EU-ARC.CZ III - 90259
Keywords : low-luminosity active galactic nuclei * radio cores * radio active galactic nuclei
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 4.9, year: 2022
Method of publishing: Open access
https://doi.org/10.3847/1538-4357/acd250

The variability of submillimeter emission provides a useful tool to probe the accretion physics in low-luminosity active galactic nuclei. We accumulate four years of observations using the Submillimeter Array for Centaurus A, NGC 4374, NGC 4278, and NGC 5077, and one year of observations for NGC 4552 and NGC 4579. All sources are variable. We measure the characteristic timescale at which the variability is saturated by modeling these sources' light curves as a damped random walk. We detect a timescale for all the sources except NGC 4552.
Permanent Link: https://hdl.handle.net/11104/0351693