Tzu‐Ching Chang

Comparing the Near-infrared Spectral Energy Distributions from Different Stellar Population Synthesis Models with SPHEREx Observations

Abstract While stellar population synthesis (SPS) models have been widely used for spectral analysis in optical wavelengths, their characteristics remain uncertain in the near-infrared (NIR) due to a relative lack of observed NIR spectra. The spectrophotometric data from SPHEREx...

Tracing the Cosmic Origins: Machine Learning Reconstruction of the Primordial Density Field from EoR Observations

Abstract Reconstructing the initial conditions of the Universe from late-time tracers would unlock cosmological information buried by non-linear structure formation and astrophysics. We reconstruct the initial density field corresponding to z = 300, with its linear amplitude extr...

Line-intensity mapping

Line-Intensity Mapping (LIM) has emerged as a powerful technique for studying large-scale structure and the high-redshift universe, enabling three-dimensional maps of line emission across vast cosmological volumes. In this review, we summarize the LIM framework, its key scientifi...

Observations of Atmospheric Helium and Oxygen With SPHEREx

Abstract We present measurements of near‐infrared (NIR) terrestrial airglow produced by helium and oxygen in the exosphere as observed by the Spectro‐Photometer for the History of the Universe, Epoch of Reionization, and ices Explorer (SPHEREx). Using 8 months of survey data obta...

Rebalancing mitochondrial dynamics restores succinate dehydrogenase activity and reduces succinate release in hepatocellular carcinoma

BACKGROUND: Dysregulated mitochondrial dynamics in cancer cells perturbs mitochondrial function and metabolism and promotes cancer progression. Its impacts on the electron transport chain, oxidative phosphorylation, redox balance, and glycolysis are well recognized. However, its...