У оквиру семинара Центра за изучавање комплексних система Института за физику у Београду, у четвртак, 26. децембра 2019. године у 14 часова у читаоници библиотеке „Др Драган Поповић“, др Владимир Луковић (University of Rome „Tor Vergata„, Italy) одржаће предавање:
Effect of local matter distribution on low-redshift supernova Ia analysis and Hubble constant measurement
САЖЕТАК:
In this talk we will review one of the biggest problems in cosmology today, the H_0 tension, and introduce the main astrophysical observables used to estimate the value of present expansion rate of the Universe. As best standard candles in astrophysics, supernova explosions, specifically of type Ia, are crucial in estimation of distances in cosmology and also in the local measurement of present cosmic expansion rate. We will present how the local (~300 megaparsecs) geometry and cosmic matter distribution could affect the measurement of Hubble constant based on use of supernovae Ia, exploring therefore one of the proposed solutions to the H_0 problem.