SN 2023fyq is the first Type Ibn supernova with a directly detected hot luminous progenitor consistent with a low-mass helium star in a binary system, based on pre-explosion imaging, disappearance confirmation, and multi-wavelength environmental analysis.
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A new histogram-free likelihood method applied to simulated JWST observations of brown dwarfs shows that globular cluster ages can be determined with formal errors under 0.2 Gyr.
Extending to wCDM mainly suppresses the leading Planck Fisher eigenvalue to 2.7% of its LambdaCDM value with only modest eigenmode rotation, while late-time data adds curvature that limits tension relief.
Experimental demonstration that SPADE with single-photon detectors achieves subdiffraction asymmetric source discrimination with lower error rates than direct imaging when crosstalk is below approximately 0.1.
Acoustic horizons in spinning black-hole accretion with spatially varying adiabatic index have surface gravities that depend on the black-hole spin parameter.
Experiments reveal that hydrogen plays a central role in forming SiC2, the key precursor to silicon carbide nanodust in carbon-rich stars.
Binary pulsar timing can constrain quadratic scalar ULDM couplings between 2e-22 and 2e-21 eV and vector ULDM couplings between 1e-23 and 1e-18 eV via resonant orbital effects.
N-body simulations show mild linear evolution in the logarithm of the Peebles spin parameter λ and a non-monotonic evolution with turnover at z≈1-2 for the Bullock λ', with closed-form fits provided for both mean and dispersion.
Machine learning techniques can mitigate limitations in traditional weak-lensing analyses and enhance extraction of cosmological information from galaxy imaging surveys.
The thesis assesses the reliability of stellar population synthesis modeling for galaxy physical properties using limited multi-band photometry rather than full spectra.
citing papers explorer
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SN 2023fyq: direct detection of a Type Ibn supernova progenitor and its multi-wavelength environmental constraints
SN 2023fyq is the first Type Ibn supernova with a directly detected hot luminous progenitor consistent with a low-mass helium star in a binary system, based on pre-explosion imaging, disappearance confirmation, and multi-wavelength environmental analysis.
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New Way to Date Globular Clusters: Brown Dwarf Cooling Sequences
A new histogram-free likelihood method applied to simulated JWST observations of brown dwarfs shows that globular cluster ages can be determined with formal errors under 0.2 Gyr.
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Information-Geometric Perspective on the Hubble Tension: Eigenmode Rotation and Curvature Suppression in wCDM
Extending to wCDM mainly suppresses the leading Planck Fisher eigenvalue to 2.7% of its LambdaCDM value with only modest eigenmode rotation, while late-time data adds curvature that limits tension relief.
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Experimental subdiffraction source discrimination enabled by spatial demultiplexing and single-photon detectors
Experimental demonstration that SPADE with single-photon detectors achieves subdiffraction asymmetric source discrimination with lower error rates than direct imaging when crosstalk is below approximately 0.1.
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On the spin dependence of the emergent gravity phenomena as observed in axially symmetric black hole accretion with spatially varying adiabatic index
Acoustic horizons in spinning black-hole accretion with spatially varying adiabatic index have surface gravities that depend on the black-hole spin parameter.
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The Significant Role of Hydrogen in the Formation of Silicon Carbide in Evolved Stars
Experiments reveal that hydrogen plays a central role in forming SiC2, the key precursor to silicon carbide nanodust in carbon-rich stars.
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Sensitivity of binary pulsar timing to spin-0 and spin-1 ultralight dark matter
Binary pulsar timing can constrain quadratic scalar ULDM couplings between 2e-22 and 2e-21 eV and vector ULDM couplings between 1e-23 and 1e-18 eV via resonant orbital effects.
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On the redshift evolution of the spin parameter in cosmological simulations
N-body simulations show mild linear evolution in the logarithm of the Peebles spin parameter λ and a non-monotonic evolution with turnover at z≈1-2 for the Bullock λ', with closed-form fits provided for both mean and dispersion.
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Machine-learning applications for weak-lensing cosmology
Machine learning techniques can mitigate limitations in traditional weak-lensing analyses and enhance extraction of cosmological information from galaxy imaging surveys.
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Interpreting Galaxy Physical Properties Using Stellar Population Synthesis
The thesis assesses the reliability of stellar population synthesis modeling for galaxy physical properties using limited multi-band photometry rather than full spectra.