科学研究
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2023.07.18
SRG/eROSITA all-sky survey: from stellar flares and neutrino sources to cosmology
After more than two years of scanning the sky the eROSITA X-ray telescope aboard SRG orbital observatory produced the best ever X-ray maps of the sky and discovered more than three million X-ray sources, of which about 20% are stars with active coronas in the Milky Way, and most of the rest are galaxies with active nuclei, quasars and clusters of galaxies. eROSITA detected over 1000 sources tha...
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2023.07.13
Can Artificial Intelligence Generate Meaningful Scientific Hypotheses?
The field of Artificial Intelligence (AI) has taken great strides in recent years, particularly with advancements in Large Language Models (LLMs) like ChatGPT. This progress has stirred much public curiosity. However, general-purpose language models like ChatGPT sometimes 'hallucinate' or invent non-existent information when handling specialized subjects. This tendency has led to a common belie...
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2023.07.05
Searching for Earth 2.0s and Life in the Universe
"Are we alone?" has been a fundamental question since the dawn of civilization, and we have always been curious about the possibility of extraterrestrial life. Since the discovery of the first exoplanet, a hot Jupiter orbiting a sun-like star named 52 Peg, in 1995, the number of exoplanet detections has grown exponentially. To date, we have discovered over 5000 exoplanets, each with unique prop...
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2023.07.04
GASTRO library: studying substructures of the Milky Way stellar halo with SPH + N-body single merger models
The Milky Way experienced several merger events which left their imprints on the stellar halo. In particular, it is known that a major merger happened during the Galaxy’s first Gyrs and, likely, perturbed its disc-shape structure. In order to fully understand the effects of such an event, we need to know the chemical and dynamical characteristics of the young Milky Way, i.e. before the major m...
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2023.07.04
JWST/NIRCam Wide-Field Slitless Spectroscopy: Current Status and Prospects as a Powerful Redshift Machine
I will present an overview of the JWST NIRCam wide-field slitless spectroscopy (WFSS). This observing mode is highly efficient in spectroscopically confirming galaxies in the Epoch of Reionization through rest-frame optical emission lines (e.g., [OIII] and Hα). With NIRCam WFSS, galaxies at z>6 can be easily detected and confirmed with ~10-min integration. The following studies will be highlig...
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