Magellanic Stream in MOND

The dynamics of Magellanic Stream (MS) as a series of clouds extended from the Magellanic Clouds (MCs) to the south Galactic pole is affected by the distribution and the amount of matter in the Milky Way (MW). We calculate the gravitational effect of the Galactic disk on MS in the MOdified Newtonian Dynamics (MOND) frame work and compare with the observations of the radial velocity. Here we consider the tidal force of the Galaxy which strips the material of the MCs to form the MS and for the non-halo model of Galaxy we ignore the effect of the drag force of the Galactic halo on MS. We also compare the MONDian dynamics with that in the logarithmic and power-law dark halo models and show that the MOND theory seems plausible for describing the dynamics of satellite galaxies as MCs. Finally we do a maximum likelihood analysis to obtain the best parameters of the MOND and the Galactic disk. Subject headings: Galaxy: halo – dark matter–Magellanic stream – MOND.