ПРЕДЕЛ СВЕТИМОСТИ ЭДДИНГТОНА ДЛЯ БЕЗМАССОВЫХ КРОТОВЫХ НОР СО СКАЛЯРНЫМ ПОЛЕМ

Abstract

Most astrophysical objects growth by mass accretion. The almost universal presence of interstellar matter generally leads to the formation around compact objects of accretion disks. The emission of the radiation from the disk is determined by the external gravitational potentials of the central massive object, which in turn are essentially determined by its nature – neutron star, black hole, wormhole or naked singularity. Hence the astrophysical observations of the emission spectra from accretion disks may lead to the possibility of directly testing the physical and astrophysical properties of the compact general relativistic objects that have generated the disk via their gravitational field. The accretion process proceeds due to the viscosity caused by the turbulent motions of matter in the accretion disks. In turn, disks have an important property – luminosity, which today allows indirect observation of astrophysical compact objects. In this work, calculations are performed to determine the Eddington luminosity limit of an accretion disk formed around a massless wormhole. The dependence of the limiting luminosity in the throat region and at infinity on the dilatonic, electric and magnetic charges for the Goulart wormhole was established. An upper limit was also obtained for the dilatonic charge, at which the maximum value of Eddington's luminosity is reached. As a result, it was found that with an increase in the dilatonic charge, the value of the Eddington luminosity limit increases.