Recent Progresses of the DAMPE Mission
doi: 10.11728/cjss2026.04.2026-yg14 cstr: 32142.14.cjss.2026-yg14
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Abstract: The Dark Matter Particle Explorer (DAMPE) is a space high-energy particle and γ-ray detector whose major scientific goals are the indirect detection of dark matter particles, the origin of cosmic rays and high-energy γ-ray astronomy. Since its successful launch in December, 2015, the DAMPE has been operated smoothly in orbit for more than 10 years. The precise measurement of the secondary boron spectrum reveals a spectral hardening with a very high significance. The spectra of five primary cosmic-ray nuclei, i.e. protons, helium, carbon, oxygen, and iron, are measured to unprecedented high energies, revealing the universal charge-dependent spectral softening for the first time. The energy spectrum of nickel is firstly measured to above TeV/n. The Fermi bubbles and GCE are detected in the γ-ray flux map at very high significances. The DAMPE measurements are expected to significantly advance our understanding of the fundamental problems in astroparticle physics.
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Key words:
- DAMPE /
- Dark matter /
- Cosmic rays /
- γ-ray
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Figure 2. CR electron spectrum (a), positron spectrum (c) and positron ratios (e) measured by DAMPE. Previous measurements from other experiments are presented for comparisons in (b)(d)(f)
Figure 3. CR boron spectrum as a function of kinetic energy per nucleon measured by DAMPE[34] (red filled dots), compared with measurements from other experiments (a), and the spectral index change values of the hardening in the spectra of proton, helium, B/C, B/O, and boron measured with DAMPE[34] (b)
Figure 4. Spectra of protons (a), helium (b), carbon (c), oxygen (d) and iron (e) measured by DAMPE (red filled dots) [38], compared with measurements from other experiments
Figure 5. Break energies for different species divided by particle charge Z (a) and particle mass A (b) [38]
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