Massively Parallel Computation of Accurate Densities for N-body Dark Matter Simulations using the Phase-Space-Element Method

Kavli Affiliate: Ralf Kaehler | First 5 Authors: Ralf Kaehler, , , , | Summary: This paper presents an accurate density computation approach for large dark matter simulations, based on a recently introduced phase-space tessellation technique and designed for massively parallel, heterogeneous cluster architectures. We discuss a memory efficient construction of an oct-tree structure to […]


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Probing microplasticity in small scale FCC crystals via Dynamic Mechanical Analysis

Kavli Affiliate: Julia R. Greer | First 5 Authors: Xiaoyue Ni, Stefanos Papanikolaou, Gabriele Vajente, Rana X Adhikari, Julia R. Greer | Summary: In small-scale metallic systems, collective dislocation activity has been correlated with size effects in strength and with a step-like plastic response under uniaxial compression and tension. Yielding and plastic flow in these […]


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A deep learning approach for predicting the quality of online health expert question-answering services

Kavli Affiliate: Hu Zhan | First 5 Authors: Ze Hu, Zhan Zhang, Qing Chen, Haiqin Yang, Decheng Zuo | Summary: Currently, a growing number of health consumers are asking health-related questions online, at any time and from anywhere, which effectively lowers the cost of health care. The most common approach is using online health expert […]


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Imbibition triggered by capillary condensation in nanopores

Kavli Affiliate: Abraham Stroock | First 5 Authors: Olivier Vincent, Bastien Marguet, Abraham Stroock, , | Summary: We study the spatio-temporal dynamics of water uptake by capillary condensation from unsaturated vapor in mesoporous silicon layers (pore radius $r_mathrm{p} simeq 2$ nm), taking advantage of the local changes in optical reflectance as a function of water […]


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A simple, picojoule-sensitive ultraviolet autocorrelator based on two-photon conductivity in sapphire

Kavli Affiliate: Robert L. Byer | First 5 Authors: Kenneth J. Leedle, Karel E. Urbanek, Robert L. Byer, , | Summary: We present a simple autocorrelator for ultraviolet pulses based on two-photon conductivity in a bench-top fabricatable sapphire sensor. We perform measurements on femtosecond 226 – 278 nm ultraviolet pulses from the third and fourth […]


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Constraints on AGN feedback from its Sunyaev-Zel’dovich imprint on the cosmic background radiation

Kavli Affiliate: George Efstathiou | First 5 Authors: Bjoern Soergel, Tommaso Giannantonio, George Efstathiou, Ewald Puchwein, Debora Sijacki | Summary: We derive constraints on feedback by active galactic nuclei (AGN) by setting limits on their thermal Sunyaev-Zel’dovich (SZ) imprint on the cosmic microwave background (CMB). The amplitude of any SZ signature is small and degenerate […]


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A pair of Calabi-Yau manifolds from a two parameter non-Abelian gauged linear sigma model

Kavli Affiliate: Kentaro Hori | First 5 Authors: Kentaro Hori, Johanna Knapp, , , | Summary: We construct and study a two parameter gauged linear sigma model with gauge group $(U(1)^2times O(2))/{mathbb Z}_2$ that has a dual model with gauge group $(U(1)^2times SO(4))/{mathbb Z}_2$. The model has two geometric phases, three hybrid phases and one […]


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Dark Matter Interpretation of the Fermi-LAT Observation Toward the Galactic Center

Kavli Affiliate: Troy A. Porter | First 5 Authors: Christopher Karwin, Simona Murgia, Tim M. P. Tait, Troy A. Porter, Philip Tanedo | Summary: The center of the Milky Way is predicted to be the brightest region of gamma-rays generated by self-annihilating dark matter particles. Excess emission about the Galactic center above predictions made for […]


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Constraints on the Mass, Concentration, and Nonthermal Pressure Support of Six CLASH Clusters from a Joint Analysis of X-ray, SZ, and Lensing Data

Kavli Affiliate: Sunil R. Golwala | First 5 Authors: Seth R. Siegel, Jack Sayers, Andisheh Mahdavi, Megan Donahue, Julian Merten | Summary: We present a joint analysis of Chandra X-ray observations, Bolocam thermal Sunyaev-Zel’dovich (SZ) effect observations, Hubble Space Telescope (HST) strong lensing data, and HST and Subaru Suprime-Cam weak lensing data. The multiwavelength dataset […]


Continue.. Constraints on the Mass, Concentration, and Nonthermal Pressure Support of Six CLASH Clusters from a Joint Analysis of X-ray, SZ, and Lensing Data

Internal Delensing of Cosmic Microwave Background Acoustic Peaks

Kavli Affiliate: Blake Sherwin | First 5 Authors: Neelima Sehgal, Mathew S. Madhavacheril, Blake Sherwin, Alexander van Engelen, | Summary: We present a method to delens the acoustic peaks of the CMB temperature and polarization power spectra internally, using lensing maps reconstructed from the CMB itself. We find that when delensing CMB acoustic peaks with […]


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