Research
-
2024.11.01
Finding QPE-like systems in MOCCA simulation
QPE(Quasi Periodic Eruptions) is new type of X-ray transient event first observed in 2018. It's characterized by the periodic X-ray outbursts in contrast to its quiescent radiation. One of the proposed model for QPE events involves a secondary body orbiting around the central massive black hole, generating periodic flares as the mass of the secondary object accretes onto the BH. These systems ...
More -
2024.10.31
Current and future characterization of small exoplanet atmospheres from ground and space
Planets between the size of Earth and Neptune, also known as sub-Neptunes, pose a conundrum. They are absent in the solar system, but more than half of all Sun-like stars in the Galaxy host a sub-Neptune interior to 1 au. Although the number of sub-Neptunes atmospheres probed so far has been very low, a major breakthrough in exo-atmospheres science is happening right now thanks to the increased...
More -
2024.10.30
Constraints on the tensor-to-scalar ratio r via a likelihood-based, optimal lensing reconstruction
The cosmic microwave background (CMB) holds valuable information about the early Universe, including an imprint of its mass distribution that overshadows the faint signal from primordial gravitational waves, likely generated during inflation. Removing this imprint is crucial for future CMB observations to tightly constrain the tensor-to-scalar ratio r. This talk focuses on achieving the tightes...
More -
2024.10.25
Galaxy Cluster Studies in the Era of High-resolution X-ray Spectroscopy
Galaxy clusters, as massive, virialized halos within the cosmic web, serve as ideal laboratories for advancing our understanding of cosmology, plasma physics, and the nature of dark matter. High-resolution spectroscopy in soft X-rays will open a new window to map multiphase gas in galaxy clusters and probe physics of the intracluster medium, including but not limited to chemical enrichment hist...
More -
2024.10.24
Stellar physics and population in the open cluster lab (Language: English)
Open clusters provide an ideal laboratory for testing and calibrating our understanding of stellar physics and single stellar population. In this talk, I will discuss how astronomers use open clusters as a well-defined single population of stars to study the Milky Way disk and stellar evolution. Additionally, I will explore how open clusters can be used to validate pipeline results from large p...
More