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Evolution of gaseous disk viscosity driven by supernova explosion in star-forming galaxies at high redshift
Jian-Min Wang, Chang-Shuo Yan, Yan-Rong Li +5
Motivated by Genzel et al.'s observations of high-redshift star-forming galaxies, containing clumpy and turbulent rings or disks, we build a set of equations describing the dynamic…
Constraining spins of supermassive black holes from TeV variability. II. fully general relativistic calculations
Yan-Rong Li, Ye-Fei Yuan, Jian-Min Wang +2
The fast variability of energetic TeV photons from the center of M87 has been detected, offering a new clue to estimate spins of supermassive black holes (SMBHs). We extend the stu…
Episodic Random Accretion and the Cosmological Evolution of Supermassive Black Hole Spins
J. -M. Wang, C. Hu, Y. -R. Li +7
The growth of supermassive black holes (BHs) located at the centers of their host galaxies comes mainly from accretion of gas, but how to fuel them remains an outstanding unsolved…