DmpIRFs and DmpST: DAMPE Instrument Response Functions and Science Tools for Gamma-Ray Data Analysis

Abstract

GeV gamma ray is an important observation target of DArk Matter Particle Explorer (DAMPE) for indirect dark matter searching and high energy astrophysics. We present in this work a set of accurate instrument response functions of DAMPE (DmpIRFs) including the effective area, point-spread function and energy dispersion that are crucial for the gamma-ray data analysis based on the high statistics simulation data. A dedicated software named DmpST is developed to facilitate the scientific analyses of DAMPE gamma-ray data. Considering the limited number of photons and the angular resolution of DAMPE, the maximum likelihood method is adopted in the DmpST to better disentangle different source components. The basic mathematics and the framework regarding this software are also introduced in this paper.

arXiv comment12 pages, 9 figures, Accepted by RAA

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• Search for gamma-ray line signals around the black hole at the galactic center with DAMPE observation
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• Search for the gamma-ray spectral lines with the DAMPE and the Fermi-LAT observations
• Boresight Alignment of DArk Matter Particle Explorer
• Development and validation of a high-fidelity full-spectrum Monte Carlo model for the Swiss airborne gamma-ray spectrometry system
• PSF Calibration of DAMPE for gamma-ray Observations
• Search for GeV gamma-ray emission from SPT-CL J2012-5649 with six years of DAMPE data
• Observations of the Fermi bubbles and the Galactic center excess with the DArk Matter Particle Explorer
• The calibrations of DAMPE $\gamma$-ray effective area
• Energy correction based on fluorescence attenuation of DAMPE
• A Study on Monte Carlo simulation of the radiation environment above GeV at the DAMPE orbit