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--- gravity [2023/02/14 11:49] – daniele.steer
+++ gravity [2023/03/08 15:02] (current) – daniele.steer
@@ Line 24: / Line 24: @@
         * For NS, develop waveform models taking into account tidal effects also in modified gravity theory (possible degeneracies with the unknown equation of state of the NS, and possibly eccentricity).
         * Testing the propagation of GWs in modified gravity with CBCs (non-trivial dispersion relations, modified gravitational damping etc)
+        * Using GW observations to test the quantum nature of gravity.
     * BHs and other compact objects in modified gravity and their properties
         * e.g. For BH, existence or not of a horizon, fuzzballs, no-hair theorems (requires finding stationary metrics solutions of a given modified gravity theory and comparing their characteristics to Kerr),....
         * For stars, for e.g. further work on the influence of modified gravity on the mass gap between neutron stars and BH. Properties of neutron stars in modified gravity
     * Other compact objects considered exotic in general relativity (ie demanding exotic presence of matter), e.g. wormholes. Do such objects exist in vacuum of modified gravity theories? How do they differ from black holes? wormhole throat versus horizon, null geodesics and light rings etc.
-    * EHT: properties of the light-ring and tests of GR. With GRAVITY+, VLT.
+    * EHT: using images and of the light-ring together with GRAVITY+ (orbits of stars around Sgr A*), tests of GR and in particular the no-hair theorem.
     * Impact on astrophysics: EHT+GWs could confirm existence of super-massive BHs, and their abundance and mass distribution. How are they formed? Idem for stellar and intermediate mass black holes.