People · researcher

Julien Lesgourgues

Cosmology

Field: Cosmology
Nationality: French

Known For

Co-author of CLASS, the Boltzmann code that turns a set of cosmological parameters into a predicted microwave background and matter power spectrum, and of MontePython for fitting them to data. A Planck collaboration member, and — with Sergio Pastor — the neutrino-cosmology bounds that make the CMB the tightest constraint on the sum of the neutrino masses.

Timeline

Neutrino Decoupling Matter–Radiation Equality Recombination Photon Decoupling — the CMB

Referenced by

event

Matter–Radiation Equality Neutrino Decoupling Photon Decoupling — the CMB Recombination

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From the Researchers database in Notion, last edited 2026-08-16. This page is the row, rendered by the build; nothing on it is written by hand.