Recent News: In August 2019, we proposed the satellite version of COSI as a Small Explorer (SMEX). On March 16th, 2020, it was announced that COSI-SMEX was selected for a Phase A study! The NASA press release is here. Work on the Phase A study will begin soon, and we are expecting it to be due in early 2021.
- In addition to our balloon instrument, we have also been developing a design of a satellite version of COSI, and this is described in a white paper that was submitted to the Astro2020 decadal survey (arXiv:1908.04334). Also, please see the references in the COSI white paper for science white papers with connections to COSI science.
- While the COSI campaign was cancelled for 2020 due to travel restriction related to COVID-19, we are hoping to fly in 2021. More details about the 2020 campaign can found at COSI 2020.
- Carolyn submitted a paper on COSI 511 keV (electron-positron annihilation) measurements to ApJ, and the submitted version is available at arXiv:1912.00110.
- Some less recent COSI talks and papers: Clio’s HEAD Meeting talk, Alex’s paper on GRB polarization, Carolyn’s overview of the 2016 flight, and John’s overview of the science results!
COSI is a balloon-borne soft gamma-ray (0.2-5 MeV) telescope designed to study astrophysical sources of nuclear line emission and gamma-ray polarization. Learn more by reading about the Science behind COSI, its Design and related Publications.