A new approach to simulating collisionless dark matter fluids

Kavli Affiliate: Ralf Kaehler | Summary:Recently, we have shown how current cosmological N-body codes already follow the fine grained phase-space information of the dark matter fluid. Using a tetrahedral tesselation of the three-dimensional manifold that describes perfectly cold fluids in six-dimensional phase space, the phase-space distribution function can be followed throughout the simulation. This allows […]


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Intergalactic Magnetic Fields and Gamma Ray Observations of Extreme TeV Blazars

Kavli Affiliate: Scott P. Wakely | Summary:The intergalactic magnetic field (IGMF) in cosmic voids can be indirectly probed through its effect on electromagnetic cascades initiated by a source of TeV gamma-rays, such as active galactic nuclei (AGN). AGN that are sufficiently luminous at TeV energies, "extreme TeV blazars" can produce detectable levels of secondary radiation […]


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Large-field-of-view Chip-scale Talbot-grid-based Fluorescence Microscopy

Kavli Affiliate: Paul W. Sternberg | Summary:The fluorescence microscope is one of the most important tools in modern clinical diagnosis and biological science. However, its expense, size and limited field-of-view (FOV) are becoming bottlenecks in key applications such as large-scale phenotyping and low-resource-setting diagnostics. Here we report a low-cost, compact chip-scale fluorescence-imaging platform, termed the […]


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