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A New Approach for Testing Einstein’s Theory of Gravity Close to Rapidly Spinning Black Holes

  • Authors: Shravan Vengalil Menon, Kun Hu, Henric Krawczynski

Shravan Vengalil Menon et al 2026 The Astrophysical Journal Letters 1003 .

  • Provider: AAS Journals

Caption: Figure 3.

Dependence of photon index on black hole spin for rapidly spinning (0.95 < a < 0.998) black holes. Black holes with lower spins have a “steeper” index due to a smaller number of photons being boosted to higher energies.

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