科学研究
-
2024.05.28
Mathematica code for calculating CMB anisotropy
The Planck mission measures the cosmic microwave background (CMB) with unprecedentedly precision. The angular spectra extracted from Planck's CMB measurements can be used to test gravitational theories and cosmological models. This is done by comparing the observational results with theoretical predictions that can be calculated by solving together the Boltzmann equation governing the evolution...
详情 -
2024.05.24
A Euclid View of the Intracluster Light in the Perseus Cluster
I will present new state-of-the art observations of the Perseus Cluster taken as part of the Euclid Early Release Observations. This data allows us, for the first time, to characterize the intracluster light (ICL) and intracluster globular clusters (ICGCs) in Perseus out to 600 kpc from the BCG. We find that within 500kpc of the BCG, there are 70,000 globular clusters and that the ICL account...
详情 -
2024.05.24
Cracking neutron star mysteries: Physics-driven insights into interior, surface, and exterior by X-ray Timing results
The utilization of Pulse Profile modeling techniques could simultaneously provide measurements for Neutron star Mass Radius and offer insights into their hotspot distribution. Presently, these methodologies rely on meta models of the equation of state (EOS) and employ pure geometrical cap overlapping techniques to align with observational data. This presentation aims to showcase our recent resu...
详情 -
2024.05.23
Precision studies of galaxy formation and cosmology
I will introduce some of our recent work focused on the measurement and modeling of galaxy distribution. We have developed a new method called PAC to make use of the complementary information from redshift and photometric galaxy surveys. With this method, we are able to significantly improve the measurements of some important observational quantities such as the galaxy stellar mass function and...
详情 -
2024.05.23
Accreting massive black holes and a Czech UV space telescope
Most galaxies comparable to or larger than the mass of the Milky Way host hot, X-ray emitting atmospheres and accreting supermassive black holes. Hot atmospheres and radio jets and lobes are the ingredients of radio-mechanical active galactic nucleus (AGN) feedback. At least half of the most massive early-type galaxies harbour multi-phase filamentary gas, which appears to result from the therm...
详情