The critical role of dark matter halos in driving star formation

Kavli Affiliate: Yingjie Peng | First 5 Authors: Jing Dou, Yingjie Peng, Qiusheng Gu, Luis C. Ho, Alvio Renzini | Summary: Understanding the physical mechanisms that drive star formation is crucial for advancing our knowledge of galaxy evolution. We explore the interrelationships between key galaxy properties associated with star formation, with a particular focus on […]


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The Convergence of Heavy and Light Seeds to Overmassive Black Holes at Cosmic Dawn

Kavli Affiliate: Kohei Inayoshi | First 5 Authors: Haojie Hu, Kohei Inayoshi, Zoltan Haiman, Luis C. Ho, Ken Ohsuga | Summary: The James Webb Space Telescope (JWST) has revealed low-luminosity active galactic nuclei (AGNs) at redshifts of $zgtrsim 4-7$, many of which host accreting massive black holes (BHs) with BH-to-galaxy mass ($M_{rm BH}/M_{star}$) ratios exceeding […]


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A Linear Decomposition Method to Analyze and Study Pulsar Mode Changes

Kavli Affiliate: Kejia Lee | First 5 Authors: Longfei Hao, Zhixuan Li, Faxin Shen, Yonghua Xu, Yuxiang Huang | Summary: In this paper, we present the linear decomposition method (LDM), which we developed to detect and analyze pulsar profile variations and mode changing behaviour. We developed LDM utilizing the likelihood function approach assuming the Gaussian […]


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No [CII] or dust detection in two Little Red Dots at z$_{rm spec}$ > 7

Kavli Affiliate: Kohei Inayoshi | First 5 Authors: Mengyuan Xiao, Pascal A. Oesch, Longji Bing, David Elbaz, Jorryt Matthee | Summary: Little Red Dots (LRDs) are compact, point-like sources characterized by their red color and broad Balmer lines, which have been debated to be either dominated by active galactic nuclei (AGN) or dusty star-forming galaxies […]


Continue.. No [CII] or dust detection in two Little Red Dots at z$_{rm spec}$ > 7

Output Length Effect on DeepSeek-R1’s Safety in Forced Thinking

Kavli Affiliate: Zhuo Li | First 5 Authors: Xuying Li, Zhuo Li, Yuji Kosuga, Victor Bian, | Summary: Large Language Models (LLMs) have demonstrated strong reasoning capabilities, but their safety under adversarial conditions remains a challenge. This study examines the impact of output length on the robustness of DeepSeek-R1, particularly in Forced Thinking scenarios. We […]


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The Chinese pulsar timing array data release I. Polarimetry for 56 millisecond pulsars

Kavli Affiliate: Kejia Lee | First 5 Authors: Jiangwei Xu, Jinchen Jiang, Heng Xu, Bojun Wang, Zihan Xue | Summary: We present polarization pulse profiles for 56 millisecond pulsars (MSPs) monitored by the Chinese Pulsar Timing Array (CPTA) collaboration using the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The observations centered at 1.25 GHz with a […]


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On the Extremely X-ray Variable Active Galactic Nuclei in the XMM-LSS Field

Kavli Affiliate: Linhua Jiang | First 5 Authors: Zijian Zhang, Bin Luo, Linhua Jiang, W. N. Brandt, Jian Huang | Summary: We present a systematic investigation of extremely X-ray variable active galactic nuclei (AGNs) in the $approx 5.3~{rm deg}^2$ XMM-SERVS XMM-LSS region. Eight variable AGNs are identified with rest-frame 2 keV flux density variability amplitudes […]


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H I absorption line and anomalous dispersion in the radio pulses of PSR B1937+21

Kavli Affiliate: Kejia Lee | First 5 Authors: Jinchen Jiang, Shunshun Cao, Kejia Lee, Bojun Wang, Heng Xu | Summary: We use the Five-hundred-meter Aperture Spherical radio Telescope (FAST) to observe the bright millisecond pulsar (MSP) PSR B1937+21 (J1939+2134) and record the data in the band from 1.0 GHz to 1.5 GHz. We measure the […]


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TOI-6324b: An Earth-Mass Ultra-Short-Period Planet Transiting a Nearby M Dwarf

Kavli Affiliate: George R. Ricker | First 5 Authors: Rena A. Lee, Fei Dai, Andrew W. Howard, Samuel Halverson, Jonathan Gomez Barrientos | Summary: We report the confirmation of TOI-6324 b, an Earth-sized (1.059 $pm$ 0.041 R$_oplus$) ultra-short-period (USP) planet orbiting a nearby ($sim$20 pc) M dwarf. Using the newly commissioned Keck Planet Finder (KPF) […]


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