ილიას სახელმწიფო უნივერსიტეტი
ძებნა
- არგუსი
- ელ. ფოსტა
- კონტაქტი
ძებნა
ილიას სახელმწიფო უნივერსიტეტი
დოქტორანტის სახელი და გვარი: სალომე მჭედლიძე
ფაკულტეტი: საბუნებისმეტყველო მეცნიერებებისა და მედიცინის ფაკულტეტი
ხელმძღვანელი ილიაუნი: თინათინ კახნიაშვილი
ხელმძღვანელი გოტინგენი: იენს ნიმაიერი
Different astrophysical observations (such as Faraday rotation and synchrotron emission data) performed over the last decades revealed the existence of the large-scale correlated magnetic fields with the strength of the order of microGauss on galaxies and galaxy cluster scales. The origin of these extragalactic magnetic fields still remains unknown: it is commonly assumed that these fields are the result of the amplification of initial weak seed fields either astrophysical or cosmological origins. The recent observations of blazar spectra suggest the lower bounds order of the femtoGauss for the magnetic fields in cosmic voids (at 1Mpc or higher length scales) and are in favor of the cosmological magnetogenesis possibility. The generation mechanisms of primordial magnetic seed fields are divided into broad classes, including inflationary and phase transition magnetogenesis scenarios. We study the magnetic fields of different primordial origins, follow the evolution of these seed fields till the late times of the Universe expansion and determine their dynamics during the large scale structure formation. To simulate the cosmic structure formation, we use the cosmological ENZO code. This allows us to examine the evolution of the magnetic field and investigate its statistical properties at different cosmological environments, such as cosmic voids, filaments, and galaxy clusters. We use different initial conditions (in correspondence with various magnetogenesis scenarios), which are obtained through numerical magnetohydrodynamical simulations (using the PENCIL code) of primordial magnetic field evolution from the moment of the generation till the recombination epoch. We investigate observational signatures of outcome magnetic fields and give a prescription on how to distinguish between the magnetic field primordial generation scenarios.
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