EHT angular diameter data yield upper bounds on the holonomy correction b (e.g., b ≤ 0.1319M at a=0 for M87*) showing nonzero b remains consistent with observations for RHCBH spacetimes.
Azreg-A¨ ınou, Physics Letters B730, 95 (2014)
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Calculations show increasing charge Q and dilaton coupling a reduce photon sphere and shadow radii of dyon-like dilatonic black holes, enabling parameter constraints from M87* and SgrA* angular diameter observations.
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Testing loop quantum gravity through EHT observations of M87* and Sgr A* using rotating holonomy-corrected black holes
EHT angular diameter data yield upper bounds on the holonomy correction b (e.g., b ≤ 0.1319M at a=0 for M87*) showing nonzero b remains consistent with observations for RHCBH spacetimes.
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Shadow, Emission, and Strong-Field Lensing of Dilatonic Black Holes
Calculations show increasing charge Q and dilaton coupling a reduce photon sphere and shadow radii of dyon-like dilatonic black holes, enabling parameter constraints from M87* and SgrA* angular diameter observations.