I consider a sample of eight pressure-supported low-surface brightness galaxies in terms Milgrom's modified Newtonian dynamics (MOND). These objects include seven nearby dwarf spheroidal -- Sextans, Carina, Leo II, Sculptor, Draco, I, Fornax, and the ultra-diffuse galaxy DF44. The are modelled as Milgromian isotropic isothermal spheres characterised by two parameters that constrained observatio...

ABSTRACT Examining a catalogue of isolated galaxy pairs, preferred orbital intervelocity ? 150 km s?1 was recently reported. This discovery is difficult to reconcile with the expectations from Newtonian numerical simulations cosmological structure formations. In previous paper, we have shown that for pairs expected in Modified Dynamics (MOND). Here detailed analysis MOND predictions presented, ...

In this paper, a generalization of convexity, namely Gf-invexity is considered. We formulate Mond-Weir type symmetric dual for class nondifferentiable multiobjective fractional programming problem over cones. Next, we prove appropriate duality results using assumptions.

We show that in the Dirac-Milne universe (a matter-antimatter symmetric where two components repel each other), rotation curves are generically flat beyond characteristic distance of about 3 virial radii, and a Tully-Fisher relation with exponent $\approx 3$ is satisfied. Using 3D simulations modified version RAMSES code, we cosmology presents Faber-Jackson very small scatter an equal to betwee...