Astrophysics & cosmology
Stellar physics, plasmas, accretion, the interstellar medium and cosmology.
- Why MHD Works in Weakly Collisional Astrophysical Plasmas
- The Eddington Luminosity in Spherical Accretion and Beyond
- How a Molecular Cloud Collapses Into a Star
- Derivation of the Cosmic-Ray Diffusion Coefficient from Pitch-Angle Scattering
- A Dark Halo That Almost Became a Galaxy
General relativity & geometry
Curvature, manifolds, the Einstein equations and their solutions.
- From the Equivalence Principle to Curved Geometry of Spacetime
- Why $R_{\mu\nu}=0$ does not imply $R_{\mu\nu\rho\sigma}=0$
- The rubber sheet gets the geometry right and the mechanism wrong!
- Tests of General Relativity in the GWTC-5.0 Gravitational-Wave Catalog
- The mathematics behind a “wormhole”
- How many solutions of Einstein’s equations are there?
- On the Consistency of Published M87* Mass Measurements
- Recent notes on covariance-weighted consistency tests for Kerr parameter estimates
- Inspiral-merger-ringdown consistency tests and the reconstruction of Kerr geometry
- Traversable wormholes and the geometry of effective exoticity
- A Consistency Test for Kerr Black Holes via Orbital Motion, Ringdown, and Imaging
- Towards a derivation of the metric tensor in general relativity
- The Kerr Trisector Closure: A project on internal consistency tests of General Relativity
- Spacetime as a Lorentzian Manifold
History & philosophy
Essays on historical figures, older theories and the foundations of physics.
- On Arthur Eddington and the 1919 Eclipse
- A Scientist Before “Scientist”
- On physics, visibility, and why I stayed
- Aristotle on Motion
Mathematical methods
Linear algebra, tensors, variational principles and other tools used in physics.