Research news on Gravitational lensing

Gravitational lensing as a research area investigates the deflection, magnification, and distortion of light from distant sources by intervening mass distributions, as predicted by general relativity, and develops methods to use these effects as astrophysical and cosmological probes. It encompasses strong, weak, and microlensing regimes, focusing on reconstructing mass profiles of galaxies and clusters, mapping dark matter, constraining dark energy via lensing statistics and cosmic shear, and testing gravity on large scales. The field integrates theoretical modeling, numerical simulations, and analysis of large imaging and spectroscopic surveys, emphasizing inverse problems, bias control, and statistical inference to extract cosmological parameters and substructure properties.

Active supermassive black holes may help form massive planets

A popular myth about black holes is that they act like giant cosmic vacuum cleaners, sucking in everything around them. But Wladimir Lyra's research found a new mechanism around supermassive black holes that is more like ...

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