A search for persistent radio sources toward repeating fast radio bursts discovered by CHIME/FRB

Posted by dbos MIT

Kavli Affiliate: Kiyoshi W. Masui | First 5 Authors: Adaeze L. Ibik, Maria R. Drout, Bryan M. Gaensler, Paul Scholz, Navin Sridhar | Summary: The identification of persistent radio sources (PRSs) coincident with two repeating fast radio bursts (FRBs) supports FRB theories requiring a compact central engine. However, deep non-detections in other cases highlight the […]


Continue.. A search for persistent radio sources toward repeating fast radio bursts discovered by CHIME/FRB

A VLBI Calibrator Grid at 600MHz for Fast Radio Transient Localizations with CHIME/FRB Outriggers

Posted by dbos MIT

Kavli Affiliate: Kiyoshi W. Masui | First 5 Authors: Shion Andrew, Calvin Leung, Alexander Li, Kiyoshi W. Masui, Bridget C. Andersen | Summary: The Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst (CHIME/FRB) Project has a new VLBI Outrigger at the Green Bank Observatory (GBO), which forms a 3300km baseline with CHIME operating at 400-800MHz. […]


Continue.. A VLBI Calibrator Grid at 600MHz for Fast Radio Transient Localizations with CHIME/FRB Outriggers

Improved Halo Model Calibrations for Mixed Dark Matter Models of Ultralight Axions

Posted by dbos Cambridge

Kavli Affiliate: George Efstathiou | First 5 Authors: Tibor Dome, Simon May, Alex Laguë, David J. E. Marsh, Sarah Johnston | Summary: We study the implications of relaxing the requirement for ultralight axions to account for all dark matter in the Universe by examining mixed dark matter (MDM) cosmologies with axion fractions $f leq 0.3$ […]


Continue.. Improved Halo Model Calibrations for Mixed Dark Matter Models of Ultralight Axions

Machine-learning convergent melanocytic morphology despite noisy archival slides

Posted by dbos UCSF

Kavli Affiliate: Michael Keiser | Authors: Mikio Tada, Garrett Gaskins, Sina Ghandian, Nicholas Mew, Michael J. Keiser and Elizabeth S. Keiser | Summary: Melanocytic atypia, ranging from benign to malignant, often leads to diagnostic discordance, complicating its prediction by machine learning models. To overcome this, we paired H&E-stained histology images with contiguous or serial sections […]


Continue.. Machine-learning convergent melanocytic morphology despite noisy archival slides

Thermo-mechanical Properties of Hierarchical Biocomposite Materials from Photosynthetic Microorganisms

Posted by Caltech

Kavli Affiliate: Chiara Daraio | First 5 Authors: Israel Kellersztein, Daniel Tish, John Pederson, Martin Bechthold, Chiara Daraio | Summary: Extrusion 3D-printing of biopolymers and natural fiber-based biocomposites allows for the fabrication of complex structures, ranging from gels for healthcare applications to eco-friendly structural materials. However, traditional polymer extrusion demands high-energy consumption to pre-heat the […]


Continue.. Thermo-mechanical Properties of Hierarchical Biocomposite Materials from Photosynthetic Microorganisms

Gravitational waves from primordial black hole isocurvature: the effect of non-Gaussianities

Posted by dbos Tokyo

Kavli Affiliate: Misao Sasaki | First 5 Authors: Xin-Chen He, Yi-Fu Cai, Xiao-Han Ma, Theodoros Papanikolaou, Emmanuel N. Saridakis | Summary: Ultra-light primordial black holes (PBHs) with masses $M_{rm PBH}<5times 10^8mathrm{g}$ can dominate transiently the energy budget of the Universe and reheat the Universe through their evaporation taking place before Big Bang Nucleosynthesis. The isocurvature […]


Continue.. Gravitational waves from primordial black hole isocurvature: the effect of non-Gaussianities

Topological K-theory of quasi-BPS categories for Higgs bundles

Posted by dbos Tokyo

Kavli Affiliate: Yukinobu Toda | First 5 Authors: Tudor Pădurariu, Yukinobu Toda, , , | Summary: In a previous paper, we introduced quasi-BPS categories for moduli stacks of semistable Higgs bundles. Under a certain condition on the rank, Euler characteristic, and weight, the quasi-BPS categories (called BPS in this case) are non-commutative analogues of Hitchin […]


Continue.. Topological K-theory of quasi-BPS categories for Higgs bundles