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 […]
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 […]
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 […]
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 […]
Kavli Affiliate: Lijing Shao | First 5 Authors: Jun Luo, Haipeng An, Ligong Bian, Rong-Gen Cai, Zhoujian Cao | Summary: The exploration of the surrounding world and the universe is an important theme in the legacy of humankind. The detection of gravitational waves is adding a new dimension to this grand effort. What are the […]
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 […]
Kavli Affiliate: Grace Xing | First 5 Authors: Chandrashekhar Savant, Thai-Son Nguyen, Kazuki Nomoto, Saurabh Vishwakarma, Siyuan Ma | Summary: We report a polarization-induced 2D electron gas (2DEG) at an epitaxial AlBN/GaN heterojunction grown on a SiC substrate. Using this 2DEG in a long conducting channel, we realize ultra-thin barrier AlBN/GaN high electron mobility transistors […]
Kavli Affiliate: Grace Xing | First 5 Authors: Anand Ithepalli, Amit Rohan Rajapurohita, Arjan Singh, Rishabh Singh, John Wright | Summary: Two single crystal phases of tantalum nitride were stabilized on c-plane sapphire using molecular beam epitaxy. The phases were identified to be $delta$-TaN with a rocksalt cubic structure and $gamma$-Ta$_2$N with a hexagonal structure. […]
Kavli Affiliate: Roland Vanderspek | 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) spectrograph, […]
Kavli Affiliate: Tadayuki Takahashi | First 5 Authors: Shunsaku Nagasawa, Takahiro Minami, Shin Watanabe, Tadayuki Takahashi, | Summary: The fourth flight of the Focusing Optics X-ray Solar Imager sounding rocket experiment (FOXSI-4) aimed to achieve the first imaging spectroscopic observations of mid-to-large class ( >= GOES C5 class) solar flares, in contrast to the previous […]