Astrophysics – Page 2 – Kavli Institute Pre-Print Publications

Enhancing Compton telescope imaging with maximum a posteriori estimation: a modified Richardson-Lucy algorithm for the Compton Spectrometer and Imager

Posted by klaurent April 3, 2025April 7, 2025This Week: Astrophysics, Tokyo

Kavli Affiliate: Shigeki Matsumoto | First 5 Authors: Hiroki Yoneda, Thomas Siegert, Israel Martinez-Castellanos, Savitri Gallego, Chris Karwin | Summary: We present a modified Richardson-Lucy (RL) algorithm tailored for image reconstruction in MeV gamma-ray observations, focusing on its application to the upcoming Compton Spectrometer and Imager (COSI) mission. Our method addresses key challenges in MeV […]

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QPanda3: A High-Performance Software-Hardware Collaborative Framework for Large-Scale Quantum-Classical Computing Integration

Posted by klaurent April 3, 2025April 7, 2025Peking, This Week: Astrophysics

Kavli Affiliate: Jing Wang | First 5 Authors: Tianrui Zou, Yuan Fang, Jing Wang, Menghan Dou, Jun Fu | Summary: QPanda3 is a high-performance quantum programming framework that enhances quantum computing efficiency through optimized circuit compilation, an advanced instruction stream format (OriginBIS), and hardware-aware execution strategies. These engineering optimizations significantly improve both processing speed and […]

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Nuclear Winds Drive Large-Scale Cold Gas Outflows in Quasars during the Reionization Epoch

Posted by klaurent April 3, 2025April 7, 2025Peking, This Week: Astrophysics

Kavli Affiliate: Luis C. Ho | First 5 Authors: Yongda Zhu, Marcia J. Rieke, Luis C. Ho, Yang Sun, George H. Rieke | Summary: Accreting supermassive black holes (SMBHs) regulate the evolution of their host galaxies through powerful outflows and multi-phase feedback. This process plays a crucial role in shaping SMBH-galaxy co-evolution across cosmic time, […]

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Self Consistent Thermal Resummation: A Case Study of the Phase Transition in 2HDM

Posted by klaurent April 2, 2025April 7, 2025Chicago, This Week: Astrophysics

Kavli Affiliate: Carlos E. M. Wagner | First 5 Authors: Pedro Bittar, Subhojit Roy, Carlos E. M. Wagner, , | Summary: An accurate description of the scalar potential at finite temperature is crucial for studying cosmological first-order phase transitions (FOPT) in the early Universe. At finite temperatures, a precise treatment of thermal resummations is essential, […]

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In-situ vs. ex-situ drivers of galaxy quenching: ubiquity of main sequence and critical black hole mass from the FLAMINGO simulation

Posted by klaurent April 2, 2025April 7, 2025Cambridge, This Week: Astrophysics

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Seunghwan Lim, Sandro Tacchella, Roberto Maiolino, Joop Schaye, Matthieu Schaller | Summary: Exploiting a large sample of 5.3 million galaxies with $M_ast,{=},10^{10-11},{rm M}_odot$ from the highest-resolution FLAMINGO simulation, we carry out a statistical analysis of quiescent and star-forming galaxies to explore quenching mechanisms. From redshift $z,{simeq},7$ to […]

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Interference with Gravitational Instability: Hot and Fuzzy Dark Matter

Posted by klaurent April 2, 2025April 7, 2025Chicago, This Week: Astrophysics

Kavli Affiliate: Wayne Hu | First 5 Authors: Rayne Liu, Wayne Hu, Huangyu Xiao, , | Summary: Wave or fuzzy dark matter produced with high momenta behaves in many ways like hot particle dark matter while also possessing seemingly different phenomenology due to wave interference. We develop wave perturbation theory to show that white noise […]

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Deciphering the Nature of Virgil: An Obscured AGN Lurking Within an Apparently Normal Lyman-α Emitter During Cosmic Reionization

Posted by klaurent Cambridge, This Week: Astrophysics

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Pierluigi Rinaldi, Pablo G. Pérez-González, George H. Rieke, Jianwei Lyu, Francesco D’Eugenio | Summary: We present a comprehensive analysis of the MIRI Extremely Red Object Virgil, a Lyman-$alpha$ emitter at $z_{spec} = 6.6379 pm 0.0035$ with the photometric properties of a Little Red Dot. Leveraging new JWST/MIRI […]

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US National Input to the European Strategy Update for Particle Physics

Posted by klaurent April 2, 2025April 7, 2025This Week: Astrophysics, Tokyo

Kavli Affiliate: Hitoshi Murayama | First 5 Authors: André de Gouvêa, Hitoshi Murayama, Mark Palmer, Heidi Schellman, | Summary: In this document we summarize the output of the US community planning exercises for particle physics that were performed between 2020 and 2023 and comment upon progress made since then towards our common scientific goals. This […]

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The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics

Posted by klaurent April 2, 2025April 7, 2025Stanford, This Week: Astrophysics

Kavli Affiliate: Tom Abel | First 5 Authors: Eleonora Di Valentino, Jackson Levi Said, Adam Riess, Agnieszka Pollo, Vivian Poulin | Summary: The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades. This concordance model is constructed by a […]

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Versatile silicon integrated photonic processor: a reconfigurable solution for netx-generation AI clusters

Posted by klaurent April 2, 2025April 7, 2025This Week: Astrophysics, Tokyo

Kavli Affiliate: Jia Liu | First 5 Authors: Ying Zhu, Yifan Liu, Xinyu Yang, Kailai Liu, Xin Hua | Summary: The Artificial Intelligence models pose serious challenges in intensive computing and high-bandwidth communication for conventional electronic circuit-based computing clusters. Silicon photonic technologies, owing to their high speed, low latency, large bandwidth, and complementary metal-oxide-semiconductor compatibility, […]

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