Active Supermassive Black Holes Revealed in Merging Galaxies
A team of astronomers has conducted infrared observations of luminous, gas-rich, merging galaxies with the Subaru Telescope to study active, mass-accreting supermassive black holes (SMBHs). They found that at least one SMBH almost always becomes active and luminous by accreting a large amount of material. However, only a small fraction of the observed merging galaxies show multiple, active SMBHs. These results suggest that local physical conditions near SMBHs rather than general properties of galaxies primarily determine the activation of SMBHs.
The scientific paper on which this article is based appears in the Astrophysical Journal published on Jan., 2014.
Imanishi, M. & Saito, Y. 2014 “Subaru Adaptive-optics High-spatial-resolution Infrared K- and L’-band Imaging Search for Deeply Buried Dual AGNs in Merging Galaxies”, Astrophysical Journal, Volume 780, article id. 106.
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