Astrophysics – Page 227 – Kavli Institute Pre-Print Publications

Freeform three-mirror anastigmatic large-aperture telescope and receiver optics for CMB-S4

Posted by July 24, 2023Chicago

Kavli Affiliate: John Carlstrom | First 5 Authors: Patricio A. Gallardo, Roberto Puddu, Kathleen Harrington, Bradford Benson, John Carlstrom | Summary: CMB-S4, the next-generation ground-based cosmic microwave background (CMB) observatory, will provide detailed maps of the CMB at millimeter wavelengths to dramatically advance our understanding of the origin and evolution of the universe. CMB-S4 will […]

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Freeform three-mirror anastigmatic large-aperture telescope and receiver optics for CMB-S4

Posted by July 24, 2023Chicago

Kavli Affiliate: Bradford Benson | First 5 Authors: Patricio A. Gallardo, Roberto Puddu, Kathleen Harrington, Bradford Benson, John Carlstrom | Summary: CMB-S4, the next-generation ground-based cosmic microwave background (CMB) observatory, will provide detailed maps of the CMB at millimeter wavelengths to dramatically advance our understanding of the origin and evolution of the universe. CMB-S4 will […]

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Freeform three-mirror anastigmatic large-aperture telescope and receiver optics for CMB-S4

Posted by July 24, 2023Chicago

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The Impact of Beam Variations on Power Spectrum Estimation for 21 cm Cosmology II: Mitigation of Foreground Systematics for HERA

Posted by klaurent July 24, 2023MIT

Kavli Affiliate: Jacqueline N. Hewitt | First 5 Authors: Honggeun Kim, Nicholas S. Kern, Jacqueline N. Hewitt, Bang D. Nhan, Joshua S. Dillon | Summary: One key challenge in detecting 21 cm cosmological signal at z > 6 is to separate the cosmological signal from foreground emission. This can be studied in a power spectrum […]

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The Impact of Beam Variations on Power Spectrum Estimation for 21 cm Cosmology II: Mitigation of Foreground Systematics for HERA

Posted by klaurent July 24, 2023MIT

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Fast and Fourier: Extreme Mass Ratio Inspiral Waveforms in the Frequency Domain

Posted by dbos July 24, 2023MIT

Kavli Affiliate: Scott A. Hughes | First 5 Authors: Lorenzo Speri, Michael L. Katz, Alvin J. K. Chua, Scott A. Hughes, Niels Warburton | Summary: Extreme Mass Ratio Inspirals (EMRIs) are one of the key sources for future space-based gravitational wave interferometers. Measurements of EMRI gravitational waves are expected to determine the characteristics of their […]

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Fast and Fourier: Extreme Mass Ratio Inspiral Waveforms in the Frequency Domain

Posted by dbos July 24, 2023MIT

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Cosmological baryon spread and impact on matter clustering in CAMELS

Posted by klaurent July 21, 2023MIT

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Matthew Gebhardt, Daniel Anglés-Alcázar, Josh Borrow, Shy Genel, Francisco Villaescusa-Navarro | Summary: We quantify the cosmological spread of baryons relative to their initial neighboring dark matter distribution using thousands of state-of-the-art simulations from the Cosmology and Astrophysics with MachinE Learning Simulations (CAMELS) project. We show that dark […]

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Four years of Type Ia Supernovae Observed by TESS: Early Time Light Curve Shapes and Constraints on Companion Interaction Models

Posted by klaurent July 21, 2023MIT

Kavli Affiliate: George R. Ricker | First 5 Authors: M. M. Fausnaugh, P. J. Vallely, M. A. Tucker, C. S. Kochanek, B. J. Shappee | Summary: We present 307 Type Ia supernova (SN) light curves from the first four years of the TESS mission. We use this sample to characterize the shapes of the early […]

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Discovery and characterisation of two Neptune-mass planets orbiting HD 212729 with TESS

Posted by klaurent July 21, 2023MIT

Kavli Affiliate: Sara Seager | First 5 Authors: David J. Armstrong, Ares Osborn, Vardan Adibekyan, Elisa Delgado-Mena, Saeed Hojjatpanah | Summary: We report the discovery of two exoplanets orbiting around HD 212729 (TOI,1052, TIC 317060587), a $T_{rm eff}=6146$K star with V=9.51 observed by TESS in Sectors 1 and 13. One exoplanet, TOI-1052b, is Neptune-mass and […]

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