3 papers
gr-qc2026
Pressure profile bounds from relaxing the TOV equation
Christopher Simmonds, Matt Visser
We develop several new and quite general bounds on the internal pressure profiles of general relativistic perfect fluid spheres --- based on various ways of relaxing the TOV system…
gr-qc2026
Revisiting Schwarzschild's constant density star in isotropic coordinates
Christopher Simmonds, Matt Visser
Herein we shall revisit the venerable 110-year-old topic of Schwarzschild's constant density star, emphasizing that for many (though not quite all) purposes it is much easier to an…
gr-qc2025
The spacetime geodesy of perfect fluid spheres
Christopher Simmonds, Matt Visser
Herein we shall argue for the utility of "spacetime geodesy", a point of view where one delays as long as possible worrying about dynamical equations, in favour of the maximal util…