Astrophysics – Page 481 – Kavli Institute Pre-Print Publications

Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies

Posted by klaurent March 11, 2022Tokyo

Kavli Affiliate: Eiichiro Komatsu | First 5 Authors: Elcio Abdalla, Guillermo Franco Abellán, Amin Aboubrahim, Adriano Agnello, Ozgur Akarsu | Summary: In this paper we will list a few important goals that need to be addressed in the next decade, also taking into account the current discordances between the different cosmological probes, such as the […]

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QCD Axion Search with ILC Beam Facility

Posted by klaurent March 11, 2022March 21, 2022Tokyo

Kavli Affiliate: Satoshi Shirai | First 5 Authors: Hajime Fukuda, Hidetoshi Otono, Satoshi Shirai, , | Summary: One of the most promising methods to search for axions is a light-shining-through-walls (LSW) experiment. In this work, we discuss the possibility of performing an LSW experiment at the ILC experiment, where photon beams are generated for positron […]

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Astrophysics with the Laser Interferometer Space Antenna

Posted by klaurent March 11, 2022Peking

Kavli Affiliate: Xian Chen | First 5 Authors: Pau Amaro Seoane, Jeff Andrews, Manuel Arca Sedda, Abbas Askar, Quentin Baghi | Summary: The Laser Interferometer Space Antenna (LISA) will be a transformative experiment for gravitational wave astronomy, and, as such, it will offer unique opportunities to address many key astrophysical questions in a completely novel […]

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Not so fuzzy: excluding FDM with sizes and stellar kinematics of ultra-faint dwarf galaxies

Posted by klaurent March 11, 2022March 21, 2022Chicago

Kavli Affiliate: Andrey Kravtsov | First 5 Authors: Neal Dalal, Andrey Kravtsov, , , | Summary: We use observations of ultra-faint dwarf (UFD) galaxies to constrain the particle mass of ultra-light dark matter. Potential fluctuations created by wave interference in virialized "fuzzy" dark matter (FDM) halos dynamically heat stellar orbits in UFDs, some of which […]

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Not so fuzzy: excluding FDM with sizes and stellar kinematics of ultra-faint dwarf galaxies

Posted by March 11, 2022Chicago

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Snowmass2021 CMB-HD White Paper

Posted by dbos March 11, 2022Cambridge

Kavli Affiliate: Blake Sherwin | First 5 Authors: The CMB-HD Collaboration, :, Simone Aiola, Yashar Akrami, Kaustuv Basu | Summary: CMB-HD is a proposed millimeter-wave survey over half the sky that would be ultra-deep (0.5 uK-arcmin) and have unprecedented resolution (15 arcseconds at 150 GHz). Such a survey would answer many outstanding questions about the […]

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LINNA: Likelihood Inference Neural Network Accelerator

Posted by klaurent March 10, 2022March 28, 2022Stanford

Kavli Affiliate: Risa H. Wechsler | First 5 Authors: Chun-Hao To, Eduardo Rozo, Elisabeth Krause, Hao-Yi Wu, Risa H. Wechsler | Summary: Bayesian posterior inference of modern multi-probe cosmological analyses incurs massive computational costs. For instance, depending on the combinations of probes, a single posterior inference for the Dark Energy Survey (DES) data had a […]

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Soft limits of the wavefunction in exceptional scalar theories

Posted by klaurent March 10, 2022March 28, 2022Chicago

Kavli Affiliate: Austin Joyce | First 5 Authors: Noah Bittermann, Austin Joyce, , , | Summary: We study the structure of the flat space wavefunctional in scalar field theories with nonlinearly realized symmetries. These symmetries imply soft theorems that are satisfied by wavefunction coefficients in the limit where one of the external momenta is scaled […]

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Optical selection bias and projection effects in stacked galaxy cluster weak lensing

Posted by klaurent March 10, 2022Stanford

Kavli Affiliate: Risa H. Wechsler | First 5 Authors: Hao-Yi Wu, Matteo Costanzi, Chun-Hao To, Andrés N. Salcedo, David H. Weinberg | Summary: Cosmological constraints from current and upcoming galaxy cluster surveys are limited by the accuracy of cluster mass calibration. In particular, optically identified galaxy clusters are prone to selection effects that can bias […]

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Optical selection bias and projection effects in stacked galaxy cluster weak lensing

Posted by klaurent March 10, 2022Stanford

Kavli Affiliate: Eli S. Rykoff | First 5 Authors: Hao-Yi Wu, Matteo Costanzi, Chun-Hao To, Andrés N. Salcedo, David H. Weinberg | Summary: Cosmological constraints from current and upcoming galaxy cluster surveys are limited by the accuracy of cluster mass calibration. In particular, optically identified galaxy clusters are prone to selection effects that can bias […]

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