Publication

Timing Analysis of Bright Pulsars with Nine Years of DAMPE Data

2026

Abstract

Based on nine years of flight data from the DArk Matter Particle Explorer (DAMPE) and a novel gamma-ray selection algorithm developed in previous work, we recalculate the instrument response functions (IRFs) in the 1–104 GeV energy range. We present PSF-weighted phase-folded light curves of the bright gamma-ray pulsars Vela and Geminga, obtained with an extended version of the PINT Is Not TEMPO2 (PINT) software adapted to our analysis needs. This work lays the groundwork for further refinement of the IRFs through pulsar analyses, improving DAMPE’s performance for gamma-ray astronomy and searches for potential dark-matter signatures.

Official source

https://infoscience.epfl.ch/entities/publication/138e00da-ae93-46eb-90ba-27a19ba4e598

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2026

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/138e00da-ae93-46eb-90ba-27a19ba4e598

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Related concepts (20)

Gamma-ray burst

In gamma-ray astronomy, gamma-ray bursts (GRBs) are immensely energetic explosions that have been observed in distant galaxies. They are the most energetic and luminous electromagnetic events since the Big Bang. Bursts can last from ten milliseconds to several hours. After an initial flash of gamma rays, a longer-lived "afterglow" is usually emitted at longer wavelengths (X-ray, ultraviolet, optical, infrared, microwave and radio).

Pulsar

A pulsar (from pulsating radio source) is a highly magnetized rotating neutron star that emits beams of electromagnetic radiation out of its magnetic poles. This radiation can be observed only when a beam of emission is pointing toward Earth (similar to the way a lighthouse can be seen only when the light is pointed in the direction of an observer), and is responsible for the pulsed appearance of emission. Neutron stars are very dense and have short, regular rotational periods.

Gamma-ray astronomy

Gamma-ray astronomy is the astronomical observation of gamma rays, the most energetic form of electromagnetic radiation, with photon energies above 100 keV. Radiation below 100 keV is classified as X-rays and is the subject of X-ray astronomy. In most known cases, gamma rays from solar flares and Earth's atmosphere are generated in the MeV range, but it is now known that gamma rays in the GeV range can also be generated by solar flares. It had been believed that gamma rays in the GeV range do not originate in the Solar System.

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Timing Analysis of Bright Pulsars with Nine Years of DAMPE Data

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