4 papers
Indefinitely flat rotation curves from Mpc sized charged cocoons
Theodorus Maria Nieuwenhuizen
Weak lensing exhibits that rotation curves of isolated galaxies remain flat up to Mpc scale (Mistele et al, 2024). Recently we proposed that dark matter is a combination of electro…
A partially occulting MACHO-microlensing event in the Twin Quasar Q0957+561
Theodorus M. Nieuwenhuizen
A doubly-peaked quasar microlensing event in the lensed Twin Quasar Q0957+561 A,B (Colley and Schild 2003) is analysed within several lensing models. In the most realistic model a…
How Zwicky already ruled out modified gravity theories without dark matter
Theodorus Maria Nieuwenhuizen
Various theories, such as MOND, MOG, Emergent Gravity and theories avoid dark matter by assuming a change in General Relativity and/or in Newton's law. Galactic rotation cur…
Dirac neutrino mass from a neutrino dark matter model for the galaxy cluster Abell 1689
Theodorus M. Nieuwenhuizen
The dark matter in the galaxy cluster Abell 1689 is modelled as an isothermal sphere of neutrinos. New data on the mass density allow an accurate description of its core and h…