Singular Templates of Imaging Cherenkov Shower distribution (STOICS): A background estimation method for Very-High-Energy ${\hat{I}}^3$-ray observations

Ruo-Yu Shang, Karl Kosack, Brian Humensky

Analyses of Imaging Atmospheric Cherenkov Telescope (IACT) data for extended ${\hat{I}}^3$-ray sources face the issue that the field of view does not offer sufficient regions for background…