Optical design of diffraction-limited X-ray telescopes

Posted by klaurent MIT

Kavli Affiliate: Ralf K. Heilmann | First 5 Authors: Brandon D. Chalifoux, Ralf K. Heilmann, Herman L. Marshall, Mark L. Schattenburg, | Summary: Astronomical imaging with micro-arcsecond ($mu$as) angular resolution could enable breakthrough scientific discoveries. Previously-proposed $mu$as X-ray imager designs have been interferometers with limited effective collecting area. Here we describe X-ray telescopes achieving diffraction-limited […]


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Requirements for future CMB satellite missions: photometric and band-pass response calibration

Posted by klaurent Tokyo

Kavli Affiliate: Tomotake Matsumura | First 5 Authors: Tommaso Ghigna, Tomotake Matsumura, Guillaume Patanchon, Hirokazu Ishino, Masashi Hazumi | Summary: Current and future Cosmic Microwave Background (CMB) Radiation experiments are targeting the polarized $B$-mode signal. The small amplitude of this signal makes a successful measurement challenging for current technologies. Therefore, very accurate studies to mitigate […]


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SENSEI: Direct-Detection Results on sub-GeV Dark Matter from a New Skipper-CCD

Posted by Chicago

Kavli Affiliate: Michael Crisler | First 5 Authors: Liron Barak, Itay M. Bloch, Mariano Cababie, Gustavo Cancelo, Luke Chaplinsky | Summary: We present the first direct-detection search for eV-to-GeV dark matter using a new ~2-gram high-resistivity Skipper-CCD from a dedicated fabrication batch that was optimized for dark-matter searches. Using 24 days of data acquired in […]


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The geometry and environment of repeating FRBs

Posted by klaurent Peking

Kavli Affiliate: Renxin Xu | First 5 Authors: Shuang Du, Weihua Wang, Xuhao Wu, Renxin Xu, | Summary: We propose a geometrical explanation for periodically and nonperiodically repeating fast radio bursts (FRBs) under neutron star (NS)-companion systems. We suggest a constant critical binary separation, $r_{rm c}$, within which the interaction between the NS and companion […]


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High sensitivity, levitated microsphere apparatus for short-distance force measurements

Posted by klaurent Stanford

Kavli Affiliate: Giorgio Gratta | First 5 Authors: Akio Kawasaki, Alexander Fieguth, Nadav Priel, Charles P. Blakemore, Denzal Martin | Summary: A high sensitivity force sensor based on dielectric microspheres in vacuum, optically trapped by a single, upward-propagating laser beam, is described. Off-axis parabolic mirrors are used both to focus the 1064~nm trapping beam and […]


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Ionization Yield in Silicon for eV-Scale Electron-Recoil Processes

Posted by klaurent Stanford

Kavli Affiliate: Noah Kurinsky | First 5 Authors: Karthik Ramanathan, Noah Kurinsky, , , | Summary: The development of single charge resolving, macroscopic silicon detectors has opened a window into rare processes at the O(eV) scale. In order to reconstruct the energy of a given event, or model the charge signal obtained for a given […]


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LAI-Net: Local-Ancestry Inference with Neural Networks

Posted by klaurent Berkeley

Kavli Affiliate: Carlos Bustamante | First 5 Authors: Daniel Mas Montserrat, Carlos Bustamante, Alexander Ioannidis, , | Summary: Local-ancestry inference (LAI), also referred to as ancestry deconvolution, provides high-resolution ancestry estimation along the human genome. In both research and industry, LAI is emerging as a critical step in DNA sequence analysis with applications extending from […]


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LAI-Net: Local-Ancestry Inference with Neural Networks

Posted by klaurent Berkeley

Kavli Affiliate: Carlos Bustamante | First 5 Authors: Daniel Mas Montserrat, Carlos Bustamante, Alexander Ioannidis, , | Summary: Local-ancestry inference (LAI), also referred to as ancestry deconvolution, provides high-resolution ancestry estimation along the human genome. In both research and industry, LAI is emerging as a critical step in DNA sequence analysis with applications extending from […]


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Search for lepton-flavor violating decays $D^{0}rightarrow X^{0}e^{pm}μ^{mp}$

Posted by klaurent Stanford

Kavli Affiliate: D. B. Macfarlane | First 5 Authors: BaBar Collaboration, J. P. Lees, V. Poireau, V. Tisserand, E. Grauges | Summary: We present a search for seven lepton-flavor-violating neutral charm decays of the type $D^{0}rightarrow X^{0} e^{pm} mu^{mp}$, where $X^{0}$ represents a $pi^{0}$, $K^{0}_{rm S}$, $bar{K^{*0}}$, $rho^{0}$, $phi$, $omega$, or $eta$ meson. The analysis […]


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The germanium quantum information route

Posted by klaurent Delft

Kavli Affiliate: Menno Veldhorst | First 5 Authors: Giordano Scappucci, Christoph Kloeffel, Floris A. Zwanenburg, Daniel Loss, Maksym Myronov | Summary: In the worldwide endeavor for disruptive quantum technologies, germanium is emerging as a versatile material to realize devices capable of encoding, processing, or transmitting quantum information. These devices leverage special properties of the germanium […]


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