Extended Data Fig. 7: Detection and light curve of the new γ-ray source.
From: A 12.4-day periodicity in a close binary system after a supernova
The top panels show the Test Statistic (TS) map of the region of interest in the direction of SN 2022jli. a, The result of data observed from 1 May 2022 to 1 March 2023 in the broad energy band (100 MeV – 300 GeV). b, The result of data observed from 1 November 2022 to 1 January 2023 in the narrow energy band (1 – 3 GeV). The sources from the 4FGL-DR3 catalogue shown with blue plus symbols have been modelled and subtracted from the map. The bottom panels show the γ-ray light curves of the detected source at the position of SN 2022jli with a bin size of 2 months. c, The energy range of 100 MeV to 300 GeV. d, The energy range of 1 GeV to 3 GeV. The black points show the measured energy flux from the likelihood modelling with the Fermi-LAT analysis tool. The blue lines give the upper limit of energy flux within a 95% confidence interval. The red histograms show the Test Statistics values on the right axis. The horizontal dashed red line marks TS=9. The vertical yellow lines mark the discovery time of SN 2022jli.
