Cambridge – Kavli Institute Pre-Print Publications

Impact of non-Gaussian likelihood on cosmological constraints from the thermal Sunyaev–Zel’dovich power spectrum: a simulation-based inference analysis

Posted by klaurent June 12, 2026June 15, 2026Cambridge, This Week: Astrophysics

Kavli Affiliate: Anthony Challinor | Summary:The thermal Sunyaev–Zel’dovich (tSZ) power spectrum is a sensitive probe of cosmology and cluster astrophysics, but its statistics are non-Gaussian because the signal receives a significant contribution from rare, massive, low-redshift galaxy clusters. As a result, a Gaussian likelihood fails to describe the statistics of its power spectrum on large […]

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Galaxy clusters in the VIDEO fields: detection and characterisation in the context of MOONRISE

Posted by klaurent June 11, 2026June 15, 2026Cambridge, This Week: Astrophysics

Kavli Affiliate: Roberto Maiolino | Summary:We analyse the cluster content of the $sim 4.5 text deg^2$ XMM-LSS and CDFS VIDEO fields which are expected to be partially covered by the upcoming MOONRISE survey. Using AMICO and WaZP photometric redshift-based cluster finders, we construct a sample of $519$ cluster candidates detected by both finders in the […]

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JADES: the mass-metallicity relation at $z=1-10$. New calibrations, extremely metal-poor galaxies, and chemical diversity

Posted by klaurent June 9, 2026June 15, 2026Cambridge, This Week: Astrophysics

Kavli Affiliate: Roberto Maiolino | Summary:We present gas-phase metallicities of star-forming galaxies at $z=1$-10 with deep JWST/NIRSpec spectra from the JADES full data release, Dark Horse, and OASIS programmes. We stack $sim$1500 medium-resolution spectra, yielding detections of the [OIII]$λ$4363 auroral line down to $12+log(mathrmO/H)=7.0$ to derive stack-based strong-line calibrations over the metallicity range $12+log(mathrmO/H)=7.0$-8.7. At […]

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JWST reveals how black holes are fed: kiloparsec-scale multiphase filaments feed sub-kiloparsec circumnuclear disks

Posted by klaurent June 4, 2026June 15, 2026Cambridge

Kavli Affiliate: Roberto Maiolino | Summary:The Centaurus cluster is one of the most important archetypes of radio-mode AGN feedback, with its central galaxy, NGC 4696, launching powerful jets that inflate X-ray cavities and regulate cooling and star formation. NGC 4696 lies within a spectacular multiphase nebula of filaments extending over tens of kiloparsecs and spanning […]

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Halo mass functions in mixed cold and fuzzy dark matter models

Posted by klaurent June 4, 2026June 15, 2026Cambridge

Kavli Affiliate: George Efstathiou | Summary:We investigate the impact of mixed cold and fuzzy dark matter (MDM) cosmologies on the halo mass function (HMF) using numerical simulations performed with the AxiREPO framework. We consider models in which an ultralight axion-like component with mass $m =10^-24.5 mathrmeV$ constitutes a fraction $f leq 0.3$ of the total […]

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The Atacama Cosmology Telescope: Probing new signatures of ultralight axions with gravitational lensing

Posted by klaurent June 4, 2026June 15, 2026Cambridge

Kavli Affiliate: Blake Sherwin | Summary:Ultralight axions (ULAs) are well-motivated dark matter particle candidates that arise in many extensions of the Standard Model of particle physics. ULAs with mass $m_mathrma lesssim 10^-27$ eV have been strongly constrained by cosmic microwave background (CMB) observations in temperature and polarization. We fit recent measurements of gravitational lensing of […]

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The impact of source and survey modelling on the connection between [O III] emitters and Ly $α$ forest transmission at z ~ 6

Posted by klaurent June 2, 2026June 15, 2026Cambridge

Kavli Affiliate: Martin Haehnelt | Summary:James Webb Space Telescope (JWST) surveys of [O III]-emitting galaxies are offering fresh insight into the connection between galaxies and the intergalactic medium at redshift z ~ 6. Recent measurements of the cross-correlation between [O III]-emitting galaxies and Ly $α$ forest transmission present an apparent challenge to numerical models. Here […]

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A Steep-Extinction QSO at z=4.6: JWST Evidence for Abundant Small Dust Grains

Posted by klaurent June 1, 2026June 15, 2026Cambridge

Kavli Affiliate: Roberto Maiolino | Summary:The rapid accumulation of massive dust reservoirs in the early Universe remains a major challenge in astrophysics. While core-collapse supernovae can inject large dust grains ($a gtrsim 0.1,μrm m$) on short timescales, explaining the total dust budgets in the early Universe likely requires efficient grain growth in the interstellar medium […]

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Efficient computation of the galaxy angular bispectrum in redshift space

Posted by klaurent May 28, 2026Cambridge

Kavli Affiliate: Anthony Challinor | Summary:Efficient computation of the angular bispectrum is an essential part of modelling large-scale structure observations, but it still remains an extremely challenging task. In this work, we compute the tree-level, unequal-time angular bispectrum in both real and redshift space. By deriving full-sky results, we show that the bispectrum can be […]

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JWST Advanced Deep Extragalactic Survey (JADES) Data Release 5: stellar population catalogue for galaxies in GOODS-N and GOODS-S

Posted by klaurent May 20, 2026Cambridge

Kavli Affiliate: Roberto Maiolino | Summary:We present the galaxy stellar population catalogue from the JWST Advanced Deep Extragalactic Survey (JADES) Data Release 5 (DR5), providing homogeneous Bayesian inference of physical galaxy properties in GOODS-N and GOODS-S. Using deep JWST/NIRCam and MIRI imaging combined with ancillary multi-wavelength data, we model the spectral energy distributions of ~500,000 […]

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