PSF Calibration of DAMPE for gamma-ray Observations

TL;DR

This paper presents a new PSF calibration method for DAMPE that improves gamma-ray observation accuracy by refining angular resolution using data from pulsars and AGNs, aiding dark matter and gamma-ray studies.

Contribution

Introduces a novel PSF calibration technique for DAMPE that enhances gamma-ray observation precision using astrophysical calibration sources.

Findings

Improved angular resolution of DAMPE's gamma-ray observations.

Enhanced calibration accuracy using pulsar and AGN data.

Better alignment of PSF model with observational data.

Abstract

The DArk Matter Particle Explorer (DAMPE) is dedicated to exploring critical scientific domains including the indirect detection of dark matter, cosmic ray physics, and gamma ray astronomy. This study introduces a novel method for calibrating the Point Spread Function (PSF) of DAMPE, specifically designed to enhance the accuracy of gamma-ray observations. By leveraging data from regions near pulsars and bright Active Galactic Nuclei (AGNs), we have refined the PSF calibration process, resulting in an improved angular resolution that closely matches our observational data. This advancement significantly boosts the precision of gamma-ray detection by DAMPE, thereby contributing to its mission objectives in dark matter detection and gamma ray astronomy.