3 papers
physics.soc-ph2026
From Timbuktu to SKA: Who owns the Astronomy knowledge Africa produces?
Rhea Koch, Amare Abebe
Africa has deep and diverse traditions of astronomical knowledge, ranging from archaeological astronomy, pharaonic stellar timekeeping, and manuscript astronomy in Timbuktu and the…
gr-qc2025
Geodesics and Light Deflection in Schwarzschild-like Spacetime from Cosmology-Inspired Modified Gravity
Ritesh Pandey, Shubham Kala, Amare Abebe +2
We investigate cosmology-driven modifications to Schwarzschild-like black hole spacetimes and analyze their impact on photon propagation, gravitational lensing, and shadow observat…
gr-qc2025
Null Geodesics, Thermodynamics, Weak Gravitational Lensing, and Black Hole Shadow Characteristics of a Frolov Regular Black Hole with Constraints from EHT Observations
Shubham Kala, Hemwati Nandan, Kush Maithani +2
In this paper, we investigate the properties of null geodesics, thermodynamics, gravitational lensing, and black hole shadows in the vicinity of a static regular Frolov black hole.…