COSI, the future gamma-ray space telescope selected by NASA

As part of its “Explorers” program, on October 18, 2021 NASA selected COSI (Compton Spectrometer & Imager) as the future space telescope, with a planned launch in 2025.

COSI is a Compton telescope designed to observe the sky in the gamma-ray photon range, between 200 keV and 10 MeV. The scientific objectives of COSI are in the fields of nuclear astrophysics and high energy phenomena. They consist in studying: the origin of positrons (antiparticles of electrons) which annihilate in our Galaxy, the nucleosynthesis of stars during and at the end of their life and the physics of compact objects.

This project, led by the Space Science Lab (SSL, University of California Berkeley, USA), will be equipped with 16 germanium detectors with capabilities of spatial localization of photon energy deposition to make spectra, images and measure the polarization of astrophysical sources.

IRAP, which has been collaborating on this project since the beginning of the year 2000 with the support of CNES, will participate in the scientific analysis and in the realization of the anticoincidence system of the COSI instrument.

Further Resources

IRAP Contact

  • Pierre Jean, pierre.jean@irap.omp.eu

More news

News

A new superstructure of galaxies in formation, discovered in a cold luminous zone of the distant universe

An international team of astrophysicists involving scientists* from the University of Paris-Saclay, CNRS, the University of Toulouse III – Paul Sabatier, Aix-Marseille University and the University Claude Bernard of Lyon […]

27.10.2021

News

A new success for the standard cosmological model

The joint analysis of the latest data from the Planck satellite and the properties of the very large catalogs of galaxies collected by the Sloan telescope support the model of […]

12.10.2021

News

Mars: first results from the Perseverance rover

The Perseverance rover has now confirmed the suitability of its landing site: Jezero crater really did contain a lake, into which a river flowed through a delta 3.6 billion years […]

08.10.2021

Search