All Disciplines – Page 877 – Kavli Institute Pre-Print Publications

Optimizing accuracy and efficacy in data-driven materials discovery for the solar production of hydrogen

Posted by dbos February 1, 2021Cornell

Kavli Affiliate: Hector D. Abruna | First 5 Authors: Yihuang Xiong, Quinn T. Campbell, Julian Fanghanel, Catherine K. Badding, Huaiyu Wang | Summary: The production of hydrogen fuels, via water splitting, is of practical relevance for meeting global energy needs and mitigating the environmental consequences of fossil-fuel-based transportation. Water photoelectrolysis has been proposed as a […]

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The wide-field infrared transient explorer (WINTER)

Posted by klaurent February 1, 2021MIT

Kavli Affiliate: Gabor Furesz | First 5 Authors: Nathan P. Lourie, John W. Baker, Richard S. Burruss, Mark Egan, Gábor Fűrész | Summary: The Wide-Field Infrared Transient Explorer (WINTER) is a new infrared time-domain survey instrument which will be deployed on a dedicated 1 meter robotic telescope at Palomar Observatory. WINTER will perform a seeing-limited […]

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The wide-field infrared transient explorer (WINTER)

Posted by klaurent February 1, 2021MIT

Kavli Affiliate: Nathan P. Lourie | First 5 Authors: Nathan P. Lourie, John W. Baker, Richard S. Burruss, Mark Egan, Gábor Fűrész | Summary: The Wide-Field Infrared Transient Explorer (WINTER) is a new infrared time-domain survey instrument which will be deployed on a dedicated 1 meter robotic telescope at Palomar Observatory. WINTER will perform a […]

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Superresolution Reconstruction of Severely Undersampled Point-spread Functions Using Point-source Stacking and Deconvolution

Posted by klaurent February 1, 2021Caltech

Kavli Affiliate: James Bock | First 5 Authors: Teresa Symons, Michael Zemcov, James Bock, Yun-Ting Cheng, Brendan Crill | Summary: Point-spread function (PSF) estimation in spatially undersampled images is challenging because large pixels average fine-scale spatial information. This is problematic when fine-resolution details are necessary, as in optimal photometry where knowledge of the illumination pattern […]

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Delensing the CMB with the cosmic infrared background: the impact of foregrounds

Posted by klaurent February 1, 2021Cambridge

Kavli Affiliate: Anthony Challinor | First 5 Authors: Antón Baleato Lizancos, Anthony Challinor, Blake D. Sherwin, Toshiya Namikawa, | Summary: The most promising avenue for detecting primordial gravitational waves from cosmic inflation is through measurements of degree-scale CMB $B$-mode polarisation. This approach must face the challenge posed by gravitational lensing of the CMB, which obscures […]

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Constraining reionization with the first measurement of the cross-correlation between the CMB optical-depth fluctuations and the Compton y-map

Posted by klaurent February 1, 2021Tokyo

Kavli Affiliate: Toshiya Namikawa | First 5 Authors: Toshiya Namikawa, Anirban Roy, Blake D. Sherwin, Nicholas Battaglia, David N. Spergel | Summary: We propose a new reionization probe that uses cosmic microwave background (CMB) observations; the cross-correlation between fluctuations in the CMB optical depth which probes the integrated electron density, $deltatau$, and the Compton $y$-map […]

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A numerical study of observational systematic errors in lensing analysis of CMB polarization

Posted by klaurent January 30, 2021Tokyo

Kavli Affiliate: Toshiya Namikawa | First 5 Authors: Ryo Nagata, Toshiya Namikawa, , , | Summary: Impacts of observational systematic errors on the lensing analysis of the cosmic microwave background (CMB) polarization are investigated by numerical simulations. We model errors of gain, angle, and pointing in observation of the CMB polarization and simulate polarization fields […]

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R-process-rich stellar streams in the Milky Way

Posted by klaurent January 29, 2021MIT

Kavli Affiliate: Anna Frebel | First 5 Authors: Maude Gull, Anna Frebel, Karina Hinojosa, Ian U. Roederer, Alexander P. Ji | Summary: We present high-resolution Magellan/MIKE spectra of 22 bright ($9<V<13.5$) metal-poor stars ($-3.18<mbox{[Fe/H]}<-1.37$) in three different stellar streams, the Helmi debris stream, the Helmi trail stream, and the $omega$ Centauri progenitor stream. We augment […]

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Evidence for a high-energy tail in the gamma-ray spectra of globular clusters

Posted by klaurent January 29, 2021Tokyo

Kavli Affiliate: Shunsaku Horiuchi | First 5 Authors: Deheng Song, Oscar Macias, Shunsaku Horiuchi, Roland M. Crocker, David M. Nataf | Summary: Millisecond pulsars are very likely the main source of gamma-ray emission from globular clusters. However, the relative contributions of two separate emission processes–curvature radiation from millisecond pulsar magnetospheres vs. inverse Compton emission from […]

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Hamiltonian Gotay-Nester-Hinds analysis of the parametrized unimodular extension of the Holst action

Posted by klaurent January 28, 2021MIT

Kavli Affiliate: J. S. Villasenor | First 5 Authors: J. Fernando Barbero G., Bogar Díaz, Juan Margalef-Bentabol, Eduardo J. S. Villaseñor, | Summary: We give a detailed account of the Hamiltonian GNH analysis of the parametrized unimodular extension of the Holst action. The purpose of the paper is to derive, through the clear geometric picture […]

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