科学研究
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2025.03.21
Revealing the nature of IRAC Optical Dropouts in the Deep HSC fields [EN]
Using the data from the Spitzer Space Telescope in the Deep HSC fields, we have found a mysterious population of objects that are detected at SNR>5 in the 3-5 micron (IRAC ch1 and ch2) but are either very red with Y-ch1>3.5 or totally invisible in the much deeper optical. Their median magnitudes are 23.95 and 23.68 AB in ch1 and ch2, respectively; 6% of the objects are also detected in IRAC ch3...
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2025.03.20
双星理论与观测
Host: Hui L
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2025.03.14
Expect the unexpected – Augmented astrophysical models for black hole population studies
GW observations are now revealing the population of black holes via the detection of binary black hole mergers, and the numbers are set to grow rapidly in the coming years: the distribution of astrophysical properties of binary black holes provides a key to interpret their formation channels. In this regard, scientists have proposed a variety of models for the black hole distribution, broadly c...
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2025.03.13
Binary around a BIG black hole v.s. Star around a BIG binary [EN]
The detections of gravitational waves (GWs) from merging binary black holes (BHs) have motivated extensive research on the dynamical formation of such compact black hole binaries (BHBs). Recent studies have highlighted the potential role of tertiary-induced mergers via von Zeipel-Lidov-Kozai (ZLK) oscillations in generating the BHBs detected by collaborations like LIGO/VIRGO/KAGRA. I will discu...
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2025.03.07
Turbulent HI Gas Driven by the SN Bubbles [EN]
The interstellar medium (ISM) is turbulent, and the energy sources driving this turbulence, particularly in HI gas, remain uncertain. Recently, stellar feedback, especially from supernovae (SNe), has been proposed as a potential mechanism for energy injection into the ISM. However, the specific processes involved are still unclear and require observational evidence. Using deep HI datacubes from...
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