The Red Supergiant Problem: As Seen from the Local Group’s Red Supergiant Populations

Kavli Affiliate: Shunsaku Horiuchi | First 5 Authors: Sarah Healy, Shunsaku Horiuchi, Chris Ashall, , | Summary: The red supergiant (RSG) problem, which describes the apparent lack of high-luminosity progenitors detected in Type II supernova (SN) pre-images, has been a contentious topic for two decades. We re-assess this problem using a new RSG population of […]


Continue.. The Red Supergiant Problem: As Seen from the Local Group’s Red Supergiant Populations

LossAgent: Towards Any Optimization Objectives for Image Processing with LLM Agents

Kavli Affiliate: Li Xin Li | First 5 Authors: Bingchen Li, Xin Li, Yiting Lu, Zhibo Chen, | Summary: We present the first loss agent, dubbed LossAgent, for low-level image processing tasks, e.g., image super-resolution and restoration, intending to achieve any customized optimization objectives of low-level image processing in different practical applications. Notably, not all […]


Continue.. LossAgent: Towards Any Optimization Objectives for Image Processing with LLM Agents

LossAgent: Towards Any Optimization Objectives for Image Processing with LLM Agents

Kavli Affiliate: Li Xin Li | First 5 Authors: Bingchen Li, Xin Li, Yiting Lu, Zhibo Chen, | Summary: We present the first loss agent, dubbed LossAgent, for low-level image processing tasks, e.g., image super-resolution and restoration, intending to achieve any customized optimization objectives of low-level image processing in different practical applications. Notably, not all […]


Continue.. LossAgent: Towards Any Optimization Objectives for Image Processing with LLM Agents

JWST-TST DREAMS: A Precise Water Abundance for Hot Jupiter WASP-17b from the NIRISS SOSS Transmission Spectrum

Kavli Affiliate: Sara Seager | First 5 Authors: Dana R. Louie, Elijah Mullens, Lili Alderson, Ana Glidden, Nikole K. Lewis | Summary: Water has proven to be ubiquitously detected in near-infrared (NIR) transmission spectroscopy observations of hot Jupiter atmospheres, including WASP-17b. However, previous analyses of WASP-17b’s atmosphere based upon Hubble Space Telescope (HST) and Spitzer […]


Continue.. JWST-TST DREAMS: A Precise Water Abundance for Hot Jupiter WASP-17b from the NIRISS SOSS Transmission Spectrum

JWST-TST DREAMS: A Precise Water Abundance for Hot Jupiter WASP-17b from the NIRISS SOSS Transmission Spectrum

Kavli Affiliate: Sara Seager | First 5 Authors: Dana R. Louie, Elijah Mullens, Lili Alderson, Ana Glidden, Nikole K. Lewis | Summary: Water has proven to be ubiquitously detected in near-infrared (NIR) transmission spectroscopy observations of hot Jupiter atmospheres, including WASP-17b. However, previous analyses of WASP-17b’s atmosphere based upon Hubble Space Telescope (HST) and Spitzer […]


Continue.. JWST-TST DREAMS: A Precise Water Abundance for Hot Jupiter WASP-17b from the NIRISS SOSS Transmission Spectrum

Weakness of X-rays and Variability in High-redshift AGNs with Super-Eddington Accretion

Kavli Affiliate: Kohei Inayoshi | First 5 Authors: Kohei Inayoshi, Shigeo Kimura, Hirofumi Noda, , | Summary: The James Webb Space Telescope (JWST) observations enable the exploration of active galactic nuclei (AGNs) with broad-line emission in the early universe. Despite their clear radiative and morphological signatures of AGNs in rest-frame optical bands, complementary evidence of […]


Continue.. Weakness of X-rays and Variability in High-redshift AGNs with Super-Eddington Accretion

Weakness of X-rays and Variability in High-redshift AGNs with Super-Eddington Accretion

Kavli Affiliate: Kohei Inayoshi | First 5 Authors: Kohei Inayoshi, Shigeo S. Kimura, Hirofumi Noda, , | Summary: The James Webb Space Telescope (JWST) observations enable the exploration of active galactic nuclei (AGNs) with broad-line emission in the early universe. Despite their clear radiative and morphological signatures of AGNs in rest-frame optical bands, complementary evidence […]


Continue.. Weakness of X-rays and Variability in High-redshift AGNs with Super-Eddington Accretion

A High Incidence of Central Star Formation Inferred from the Color Gradients of Galaxies at $z>4$

Kavli Affiliate: Luis C. Ho | First 5 Authors: Bingcheng Jin, Luis C. Ho, Wen Sun, , | Summary: We study the rest-frame ultraviolet-optical color gradients of 669 galaxies at $4<z<8$ by characterizing the wavelength dependence of their structural parameters derived from simultaneously fitting the seven-band NIRCam images acquired with the James Webb Space Telescope. […]


Continue.. A High Incidence of Central Star Formation Inferred from the Color Gradients of Galaxies at $z>4$

An Image Simulator of Lunar Far-Side Impact Flashes Captured from the Earth-Moon L2 Point

Kavli Affiliate: Jing Wang | First 5 Authors: Da Song, Hong-bo Cai, Shen Wang, Jing Wang, | Summary: Impact flashes on the moon are caused by high-speed collisions of celestial bodies with the lunar surface. The study of the impacts is critical for exploring the evolutionary history and formation of the Moon, and for quantifying […]


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A Lower Mass Estimate for PSR J0348+0432 Based on CHIME/Pulsar Precision Timing

Kavli Affiliate: Kiyoshi W. Masui | First 5 Authors: Alexander Saffer, Emmanuel Fonseca, Scott Ransom, Ingrid Stairs, Ryan Lynch | Summary: The binary pulsar J0348+0432 was previously shown to have a mass of approximately 2,${rm M_odot}$, based on the combination of radial-velocity and model-dependent mass parameters derived from high-resolution optical spectroscopy of its white-dwarf companion. […]


Continue.. A Lower Mass Estimate for PSR J0348+0432 Based on CHIME/Pulsar Precision Timing