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gr-qc2026
Linearised gravitational radiation in de Sitter spacetime at all multipole orders
Harsh, Omkar Shetye, Amitabh Virmani
We derive the linearised gravitational waves generated by a localised matter source in the Poincare patch of de Sitter spacetime at arbitrary multipole order. The linearised de Sit…
gr-qc2026
Octupolar Gravitational Radiation in de Sitter Spacetime
Harsh, Omkar Shetye, Amitabh Virmani
We derive the gravitational radiation generated by a localised matter source in de Sitter spacetime at octupolar order in the multipolar expansion, working in generalised harmonic…