Search academic texts

Information × Registration Number 0125U000888, ( 0225U004377  ) R & D request Title Compact star-forming galaxies and their impact on cosmic reionization and cosmology Head Izotov Yurii I., Доктор фізико-математичних наук Registration Date 04-02-2025 Organization М.М.Bogolyubov Institute of Theoretical Physics of the National Academy of Sciences of Ukraine popup.description1 We propose to investigate the properties of compact star-forming galaxies (CSFG) and their ionization radiation at low and high redshifts using observations on the Hubble and James Webb space telescopes, and to compute cosmological models predicting the neutral gas (21-cm signal) during the epoch of reionization using state-of-art knowledge of galaxy properties to. From the observational data we will determine the key properties of CSFG, their interstellar medium, and ionizing radiation field, measure the production and escape of ionizing photons from CSFG across cosmic history, and test the universality of indicators of Lyman continuum escape at z~0.5-3. The cosmological models will allow us to constrain the amplitude of density fluctuations in the Universe and other cosmological parameters, constrain nongaussianity, and infer astrophysical constraints from 21-cm fluctuations. The main goal of the project is to study the role of CSFG in the reionization of the Universe. popup.nrat_date 2025-02-04 Close