Damping Wing-Like Features in the Spectra of High Redshift Quasars: a Challenge for Fully-Coupled Simulations

Kavli Affiliate: Nickolay Y. Gnedin | First 5 Authors: Nickolay Y. Gnedin, Hanjue Zhu, , , | Summary: Recently, several observational detections of damping-wing-like features at the edges of “dark gaps" in the spectra of distant quasars (the “Malloy-Lidz effect") have been reported, rendering strong support for the existence of “neutral islands" in the universe […]


Continue.. Damping Wing-Like Features in the Spectra of High Redshift Quasars: a Challenge for Fully-Coupled Simulations

Kimina-Prover Preview: Towards Large Formal Reasoning Models with Reinforcement Learning

Kavli Affiliate: Ran Wang | First 5 Authors: Haiming Wang, Mert Unsal, Xiaohan Lin, Mantas Baksys, Junqi Liu | Summary: We introduce Kimina-Prover Preview, a large language model that pioneers a novel reasoning-driven exploration paradigm for formal theorem proving, as showcased in this preview release. Trained with a large-scale reinforcement learning pipeline from Qwen2.5-72B, Kimina-Prover […]


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Cross terms and monochromatic gravitational wave sources in our Galactic Centre

Kavli Affiliate: Pau Amaro Seoane | First 5 Authors: Pau Amaro Seoane, Josep V. Arnau, Màrius Josep Fullana i Alfonso, , | Summary: The gravitational capture of a small compact object by a supermassive black hole is one of the most intriguing sources of gravitational waves to be detected by space-borne observatories. Modeling gravitational waves […]


Continue.. Cross terms and monochromatic gravitational wave sources in our Galactic Centre

Massive Black Hole Seed Formation in Strong X-ray Environments at High Redshift

Kavli Affiliate: Kohei Inayoshi | First 5 Authors: Kazutaka Kimura, Kohei Inayoshi, Kazuyuki Omukai, , | Summary: Direct collapse of pristine gas in early galaxies is a promissing pathway for forming supermassive black holes (BHs) powering active galactic nuclei (AGNs) at the epoch of reionization (EoR). This seeding mechanism requires suppression of molecular hydrogen (H$_2$) […]


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Do We Know How to Model Reionization?

Kavli Affiliate: Nickolay Y. Gnedin | First 5 Authors: Nickolay Y. Gnedin, , , , | Summary: I compare the power spectra of the radiation fields from two recent sets of fully-coupled simulations that model cosmic reionization: "Cosmic Reionization On Computers" (CROC) and "Thesan". While both simulations have similar power spectra of the radiation sources, […]


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Cosmogenic Neutrino Point Source and KM3-230213A

Kavli Affiliate: Zhuo Li | First 5 Authors: Qinyuan Zhang, Tian-Qi Huang, Zhuo Li, , | Summary: Cosmogenic neutrinos (CNs) are produced by ultra-high energy cosmic rays (UHECRs) interacting with cosmic background radiation. We investigated the properties of CN point/extended sources, i.e, the neutrino spectrum, and angular profile as functions of time, by assuming that […]


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Bumblebee cosmology: The FLRW solution and the CMB temperature anisotropy

Kavli Affiliate: Pau Amaro Seoane | First 5 Authors: Rui Xu, Dandan Xu, Lars Andersson, Pau Amaro Seoane, Lijing Shao | Summary: We put into test the idea of replacing dark energy by a vector field against the cosmic microwave background (CMB) observation using the simplest vector-tensor theory, where a massive vector field couples to […]


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Extracting cosmological information from the abundance of galaxy clusters with simulation-based inference

Kavli Affiliate: Anthony Challinor | First 5 Authors: Íñigo Zubeldia, Boris Bolliet, Anthony Challinor, William Handley, | Summary: The abundance of galaxy clusters as a function of mass and redshift is a well-established and powerful cosmological probe. Cosmological analyses based on galaxy cluster number counts have traditionally relied on explicitly computed likelihoods, which are often […]


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Rapid and Late Cosmic Reionization Driven by Massive Galaxies: a Joint Analysis of Constraints from 21-cm, Lyman Line & CMB Data Sets

Kavli Affiliate: George Efstathiou | First 5 Authors: Peter H. Sims, Harry T. J. Bevins, Anastasia Fialkov, Dominic Anstey, Will J. Handley | Summary: Observations of the Epoch of Reionization (EoR) have the potential to answer long-standing questions of astrophysical interest regarding the nature of the first luminous sources and their effects on the intergalactic […]


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The X-ray statistical properties of dust-obscured galaxies detected by eROSITA

Kavli Affiliate: Kohei Inayoshi | First 5 Authors: Akatoki Noboriguchi, Kohei Ichikawa, Yoshiki Toba, Tom Dwelly, Kohei Inayoshi | Summary: Dust-obscured galaxies (DOGs) are considered to be in a co-evolution phase, with the associated active galactic nuclei (AGN) obscured by dust and gas. Although the DOGs are thought to harbor rapidly growing SMBHs, their X-ray […]


Continue.. The X-ray statistical properties of dust-obscured galaxies detected by eROSITA