The First Photometric Evidence of a Transient/Variable Source at z>5 with JWST

Kavli Affiliate: Kohei Inayoshi | First 5 Authors: Christa DeCoursey, Eiichi Egami, Fengwu Sun, Arshia Akhtarkavan, Rachana Bhatawdekar | Summary: The James Webb Space Telescope (JWST) discovered 79 transients out to $z$$sim$4.8 through the JADES Transient Survey (JTS), but the JTS did not find any $z$$>$5 transients. Here, we present the first photometric evidence of […]


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Searching for Compact Obscured Nuclei in Compton Thick AGN

Kavli Affiliate: Claudio Ricci | First 5 Authors: Makoto A. Johnstone, George C. Privon, Loreto Barcos-Munoz, A. S. Evans, S. Aalto | Summary: Compact Obscured Nuclei (CONs) are heavily obscured infrared cores that have been found in local (ultra)luminous infrared galaxies (U/LIRGs). They show bright emission from vibrationally excited rotational transitions of HCN, known as […]


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Ultra-diffuse galaxies in the EAGLE simulation

Haonan Zheng, Shihong Liao, Liang Gao, Fangzhou Jiang, | Summary: [[{“value”:”We use the highest-resolution EAGLE simulation, Recal-L025N0752, to study the properties and formation of ultra-diffuse galaxies (UDGs). We identify 181 UDGs and find their properties closely match observations. The total masses of EAGLE UDGs range from ${sim}5times 10^{8}~M_{odot}$ to ${sim}2times 10^{11}~M_{odot}$, indicating that they are […]


Continue.. Ultra-diffuse galaxies in the EAGLE simulation

Ultra-diffuse galaxies in the EAGLE simulation

Haonan Zheng, Shihong Liao, Liang Gao, Fangzhou Jiang, | Summary: [[{“value”:”We use the highest-resolution EAGLE simulation, Recal-L025N0752, to study the properties and formation of ultra-diffuse galaxies (UDGs). We identify 181 UDGs and find their properties closely match observations. The total masses of EAGLE UDGs range from ${sim}5times 10^{8}~M_{odot}$ to ${sim}2times 10^{11}~M_{odot}$, indicating that they are […]


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Systematic search for blue hyper-velocity stars from LAMOST survey

Kavli Affiliate: Huawei Zhang | First 5 Authors: Yongkang Sun, Yang Huang, Jifeng Liu, Haozhu Fu, Huawei Zhang | Summary: Hypervelocity stars (HVSs) represent a unique class of objects capable of escaping the gravitational pull of the Milky Way due to extreme acceleration events, such as close encounters with the supermassive black hole at the […]


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Grounding-MD: Grounded Video-language Pre-training for Open-World Moment Detection

Kavli Affiliate: Li Xin Li | First 5 Authors: Weijun Zhuang, Qizhang Li, Xin Li, Ming Liu, Xiaopeng Hong | Summary: Temporal Action Detection and Moment Retrieval constitute two pivotal tasks in video understanding, focusing on precisely localizing temporal segments corresponding to specific actions or events. Recent advancements introduced Moment Detection to unify these two […]


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Deep Neural Networks for Modeling Astrophysical Nuclear reacting flows

Kavli Affiliate: Lile Wang | First 5 Authors: Xiaoyu Zhang, Yuxiao Yi, Lile Wang, Zhi-Qin John Xu, Tianhan Zhang | Summary: In astrophysical simulations, nuclear reacting flows pose computational challenges due to the stiffness of reaction networks. We introduce neural network-based surrogate models using the DeePODE framework to enhance simulation efficiency while maintaining accuracy and […]


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Detecting Intermediate-mass Black Holes Using Quasar Microlensing

Kavli Affiliate: Luis C. Ho | First 5 Authors: Zihao Wu, Luis C. Ho, , , | Summary: Recent studies suggest that numerous intermediate-mass black holes (IMBHs) may wander undetected across the Universe, emitting little radiation. These IMBHs largely preserve their birth masses, offering critical insights into the formation of heavy black hole seeds and […]


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The “Little Dark Dot”: Evidence for Self-Interacting Dark Matter in the Strong Lens SDSSJ0946+1006?

Shubo Li, Ran Li, Kaihao Wang, Zixiang Jia, Xiaoyue Cao | Summary: [[{“value”:”Previous studies, based on precise modeling of a gravitationally lensing image, have identified what may be a extremely compact, dark perturber in the well-known lensing system SDSSJ0946+1006 (the "Jackpot"). Its remarkable compactness challenges the standard cold dark matter (CDM) paradigm. In this paper, […]


Continue.. The “Little Dark Dot”: Evidence for Self-Interacting Dark Matter in the Strong Lens SDSSJ0946+1006?