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Full-Text Articles in Physical Sciences and Mathematics
A Displaced Supermassive Black Hole In M87, Daniel P. Batcheldor, A. Robinson, D. J. Axon, Eric S. Perlman, D. Merritt
A Displaced Supermassive Black Hole In M87, Daniel P. Batcheldor, A. Robinson, D. J. Axon, Eric S. Perlman, D. Merritt
Aerospace, Physics, and Space Science Faculty Publications
Isophotal analysis of M87, using data from the Advanced Camera for Surveys, reveals a projected displacement of 6.8 ± 0.8 pc (~0farcs1) between the nuclear point source (presumed to be the location of the supermassive black hole, SMBH) and the photo-center of the galaxy. The displacement is along a position angle of 307° ± 17° and is consistent with the jet axis. This suggests the active SMBH in M87 does not currently reside at the galaxy center of mass, but is displaced in the counter-jet direction. Possible explanations for the displacement include orbital motion of an SMBH binary, gravitational perturbations …
The M•–Σ* Relation Derived From Sphere Of Influence Arguments, Daniel P. Batcheldor
The M•–Σ* Relation Derived From Sphere Of Influence Arguments, Daniel P. Batcheldor
Aerospace, Physics, and Space Science Faculty Publications
The observed relation between supermassive black hole (SMBH) mass (M•) and bulge stellar velocity dispersion (σ*) is described by log M• = α + βlog(σ*/200 km s-1). As this relation has important implications for models of galaxy and SMBH formation and evolution, there continues to be great interest in adding to the M• catalog. The "sphere of influence" (ri) argument uses spatial resolution to exclude some M• estimates and pre-select additional galaxies for further SMBH studies. This Letter quantifies the effects of applying the ri argument to a population of galaxies and SMBHs that do not follow the M•–σ* relation. …