Astrophysics – Page 10 – Kavli Institute Pre-Print Publications

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

Posted by dbos September 17, 2024MIT

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

Posted by dbos September 17, 2024September 30, 2024MIT

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. […]

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

Posted by dbos September 17, 2024September 30, 2024Cambridge

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 $f leq 0.3$ […]

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

Posted by dbos September 17, 2024September 30, 2024Tokyo

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 […]

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Vetting quark-star models with gravitational waves in the hierarchical Bayesian framework

Posted by dbos September 17, 2024Peking

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

Posted by dbos September 17, 2024September 30, 2024Tokyo

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 […]

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The FUV Spectrum of FU Ori South

Posted by dbos September 17, 2024September 30, 2024Peking

Kavli Affiliate: Gregory J. Herczeg | First 5 Authors: Adolfo S. Carvalho, Gregory J. Herczeg, Kevin France, Lynne A. Hillenbrand, | Summary: The eruptive YSO FU Ori is the eponym of its variable class. FU Ori stars are known to undergo outbursts with amplitudes of $>4$ magnitudes in the $V$ band and durations of several […]

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Deciphering spatially resolved Lyman-alpha profiles in reionization analogs: the Sunburst Arc at cosmic noon

Posted by September 16, 2024Chicago

Kavli Affiliate: Michael D. Gladders | First 5 Authors: Erik Solhaug, Hsiao-Wen Chen, Mandy C. Chen, Fakhri Zahedy, Max Gronke | Summary: The hydrogen Lyman-alpha (Lya) emission line, the brightest spectral feature of a photoionized gas, is considered an indirect tracer of the escape of Lyman continuum (LyC) photons, particularly when the intergalactic medium is […]

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Deciphering spatially resolved Lyman-alpha profiles in reionization analogs: the Sunburst Arc at cosmic noon

Posted by September 16, 2024Chicago

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Deciphering spatially resolved Lyman-alpha profiles in reionization analogs: the Sunburst Arc at cosmic noon

Posted by September 16, 2024Chicago

Continue..