High-resolution CMB bispectrum estimator with flexible modal basis

Kavli Affiliate: E. P. S. Shellard | First 5 Authors: Zhonghai Zhao, Yang Xu, Jia Liu, Li Zhao, Yulong Shen | Summary: We present a new independent pipeline for the CMB bispectrum estimation of primordial non-Gaussianity and release a public code for constraining bispectrum shapes of interest based on the Planck 2018 temperature and polarization […]


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A small and vigorous black hole in the early Universe

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Roberto Maiolino, Jan Scholtz, Joris Witstok, Stefano Carniani, Francesco D’Eugenio | Summary: Black holes with masses in excess of several billion solar masses have been found at redshifts 6-7.5, when the universe was less than 1 Gyr old. The existence of such supermassive black holes already in […]


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The growth of the gargantuan black holes powering high-redshift quasars and their impact on the formation of early galaxies and protoclusters

Kavli Affiliate: Debora Sijacki | First 5 Authors: Jake S. Bennett, Debora Sijacki, Tiago Costa, Nicolas Laporte, Callum Witten | Summary: High-redshift quasars ($zgtrsim6$), powered by black holes (BHs) with large inferred masses, imply rapid BH growth in the early Universe. The most extreme examples have inferred masses of $sim ! 10^9,$M$_odot$ at $z = […]


Continue.. The growth of the gargantuan black holes powering high-redshift quasars and their impact on the formation of early galaxies and protoclusters

A non-linear solution to the $S_8$ tension II: Analysis of DES Year 3 cosmic shear

Kavli Affiliate: George Efstathiou | First 5 Authors: Calvin Preston, Alexandra Amon, George Efstathiou | Summary: Weak galaxy lensing surveys have consistently reported low values of the $S_8$ parameter compared to the $textit{Planck} Lambdarm{CDM}$ cosmology. Amon & Efstathiou (2022) used KiDS-1000 cosmic shear measurements to propose that this tension can be reconciled if the matter […]


Continue.. A non-linear solution to the $S_8$ tension II: Analysis of DES Year 3 cosmic shear

An empirical study of dust properties at the earliest epochs

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Joris Witstok, Gareth C. Jones, Roberto Maiolino, Renske Smit, Raffaella Schneider | Summary: We present an empirical analysis of the properties of dust-continuum emission in a sample of 17 galaxies in the early Universe ($4 < z < 8$) with well-sampled far-infrared (FIR) spectral energy distributions (SEDs) […]


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Optimizing the Evolution of Perturbations in the $Λ$CDM Universe

Kavli Affiliate: Anthony Challinor | First 5 Authors: Nicholas Choustikov, Zvonimir Vlah, Anthony Challinor | Summary: Perturbation theory is a powerful tool for studying large-scale structure formation in the universe and calculating observables such as the power spectrum or bispectrum. However, beyond linear order, typically this is done by assuming a simplification in the time-dependence […]


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Mini-Quenching of High-Redshift Galaxies by Bursty Star Formation

Kavli Affiliate: George Efstathiou | First 5 Authors: Tibor Dome, Sandro Tacchella, Anastasia Fialkov, Avishai Dekel, Omri Ginzburg | Summary: The recent observation of a low-mass $z=5.2$ and an intermediate-mass $z=7.3$ (JADES-GS-z7-01-QU) quenched galaxy with JWST / NIRSpec is the first evidence of halted star formation above $zsim 5$. Here we show how bursty star […]


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The Magnificent Five Images of Supernova Refsdal: Time Delay and Magnification Measurements

Kavli Affiliate: Kaisey Mandel | First 5 Authors: Patrick L. Kelly, Steven Rodney, Tommaso Treu, Simon Birrer, Vivien Bonvin | Summary: In late 2014, four images of Supernova (SN) “Refsdal,” the first known example of a strongly lensed SN with multiple resolved images, were detected in the MACS J1149 galaxy-cluster field. Following the images’ discovery, […]


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Constraints on the Hubble constant from Supernova Refsdal’s reappearance

Kavli Affiliate: Kaisey Mandel | First 5 Authors: Patrick L. Kelly, Steven Rodney, Tommaso Treu, Masamune Oguri, Wenlei Chen | Summary: The gravitationally lensed Supernova Refsdal appeared in multiple images, produced through gravitational lensing by a massive foreground galaxy cluster. After the supernova appeared in 2014, lens models of the galaxy cluster predicted an additional […]


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Avoiding methane emission rate underestimates when using the divergence method

Kavli Affiliate: Kaisey Mandel | First 5 Authors: Clayton Roberts, Rutger IJzermans, David Randell, Matthew Jones, Philip Jonathan | Summary: Methane is a powerful greenhouse gas, and a primary target for mitigating climate change in the short-term future due to its relatively short atmospheric lifetime and greater ability to trap heat in Earth’s atmosphere compared […]


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