Astrophysics – Page 279 – Kavli Institute Pre-Print Publications

Reconstruction of Cosmic Black Hole Growth and Mass Distribution from Quasar Luminosity Functions at $z>4$: Implications for Faint and Low-mass Populations in JWST

Posted by dbos June 9, 2023Peking

Kavli Affiliate: Kohei Inayoshi | First 5 Authors: Wenxiu Li, Kohei Inayoshi, Masafusa Onoue, Wanqiu He, Yoshiki Matsuoka | Summary: The evolution of the quasar luminosity function (QLF) is fundamental to understanding the cosmic evolution of black holes (BHs) through their accretion phases. In the era of the James Webb Space Telescope (JWST), Euclid, and […]

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Galaxy Light profile neural Networks (GaLNets). II. Bulge-Disc decomposition in optical space-based observations

Posted by dbos June 9, 2023Peking

Kavli Affiliate: Hu Zhan | First 5 Authors: Chen Qiu, Nicola R. Napolitano, Rui Li, Yuedong Fang, Crescenzo Tortora | Summary: Bulge-disk (B-D) decomposition is an effective diagnostic to characterize the galaxy morphology and understand its evolution across time. So far, high-quality data have allowed detailed B-D decomposition to redshift below 0.5, with limited excursions […]

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Galaxy Light profile neural Networks (GaLNets). II. Bulge-Disc decomposition in optical space-based observations

Posted by dbos June 9, 2023Peking

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Binning is Sinning: Redemption for Hubble Diagram using Photometrically Classified Type Ia Supernovae

Posted by June 9, 2023Chicago

Kavli Affiliate: Richard Kessler | First 5 Authors: Richard Kessler, Maria Vincenzi, Patrick Armstrong, , | Summary: Bayesian Estimation Applied to Multiple Species (BEAMS) is implemented in the BEAMS with Bias Corrections (BBC) framework to produce a redshift-binned Hubble diagram (HD) for Type Ia supernovae (SNe Ia). BBC corrects for selection effects and non-SNIa contamination, […]

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Little Red Dots: an abundant population of faint AGN at $zsim5$ revealed by the EIGER and FRESCO JWST surveys

Posted by dbos June 8, 2023MIT

Kavli Affiliate: Robert A. Simcoe | First 5 Authors: Jorryt Matthee, Rohan P. Naidu, Gabriel Brammer, John Chisholm, Anna-Christina Eilers | Summary: Characterising the prevalence and properties of faint active galactic nuclei (AGN) in the early Universe is key for understanding the formation of supermassive black holes (SMBHs) and determining their role in cosmic reionization. […]

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Little Red Dots: an abundant population of faint AGN at z~5 revealed by the EIGER and FRESCO JWST surveys

Posted by dbos June 8, 2023MIT

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The need for focused, hard X-ray investigations of the Sun

Posted by dbos June 8, 2023Stanford

Kavli Affiliate: Vahe Petrosian | First 5 Authors: Lindsay Glesener, Albert Y. Shih, Amir Caspi, Ryan Milligan, Hugh Hudson | Summary: Understanding the nature of energetic particles in the solar atmosphere is one of the most important outstanding problems in heliophysics. Flare-accelerated particles compose a huge fraction of the flare energy budget; they have large […]

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The need for focused, hard X-ray investigations of the Sun

Posted by dbos June 8, 2023Stanford

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TOI-4010: A System of Three Large Short-Period Planets With a Massive Long-Period Companion

Posted by klaurent June 8, 2023MIT

Kavli Affiliate: Andrew Vanderburg | First 5 Authors: Michelle Kunimoto, Andrew Vanderburg, Chelsea X. Huang, M. Ryleigh Davis, Laura Affer | Summary: We report the confirmation of three exoplanets transiting TOI-4010 (TIC-352682207), a metal-rich K dwarf observed by TESS in Sectors 24, 25, 52, and 58. We confirm these planets with HARPS-N radial velocity observations […]

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The Star-forming and Ionizing Properties of Dwarf z~6-9 Galaxies in JADES: Insights on Bursty Star Formation and Ionized Bubble Growth

Posted by dbos June 8, 2023Cambridge

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Ryan Endsley, Daniel P. Stark, Lily Whitler, Michael W. Topping, Benjamin D. Johnson | Summary: Reionization is thought to be driven by faint star-forming galaxies, but characterizing this population has long remained very challenging. Here we utilize deep nine-band NIRCam imaging from JADES to study the star-forming […]

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