286 citations · 1.4k across the 36 of their papers we have counts for
36 papers
Accuracy of the thin-lens approximation in strong lensing by smoothly truncated dark matter haloes
Simonetta Frittelli, Thomas P. Kling
The accuracy of mass estimates by gravitational lensing using the thin-lens approximation applied to Navarro-Frenk-White mass models with a soft truncation mechanism recently propo…
Study of errors in strong gravitational lensing
Thomas P. Kling, Simonetta Frittelli
We examine the accuracy of strong gravitational lensing determinations of the mass of galaxy clusters by comparing the conventional approach with the numerical integration of the f…
A framework for large-scale relativistic simulations in the characteristic approach
Roberto Gómez, Willians Barreto, Simonetta Frittelli
We present a new computational framework (LEO), that enables us to carry out the very first large-scale, high-resolution computations in the context of the characteristic approach…
Well-posed first-order reduction of the characteristic problem of the linearized Einstein equations
Simonetta Frittelli
A choice of first-order variables for the characteristic problem of the linearized Einstein equations is found which casts the system into manifestly well-posed form. The concept o…
Estimates for first-order homogeneous linear characteristic problems
Simonetta Frittelli
An algebraic criterion that is sufficient to establish the existence of certain a priori estimates for the solution of first-order homogeneous linear characteristic problems is der…
Estimates for the characteristic problem of the first-order reduction of the wave equation
Simonetta Frittelli
We calculate certain estimates for the solution of the characteristic problem of the wave equation reduced to first order, in terms of the free data prescribed on two transverse su…