Remarks on the light ring images and the optical appearance of hairy black holes in Einstein–Maxwell-dilaton gravity
Abstract The behaviors of null geodesics in the spherical symmetric black holes in Einstein–Maxwell-dilaton (EMD) theory with coupling function $$f(\Phi )=e^{-2\alpha \Phi }$$ f ( Φ ) = e - 2 α Φ are meticulously analyzed. We investigate the effects of coupling constant $$\alpha $$ α on the effectiv...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2024-09-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-024-13258-8 |
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