Discovery of X-ray Pulsation from the Geminga-like Pulsar PSR J2021+4026

We report the discovery of X-ray periodicity of ~265.3 ms from a deep XMM-Newton observation of the radio-quiet gamma-ray pulsar, PSR J2021+4026, located at the edge of the supernova remnant G78.2+2.1 (gamma-Cygni).The detected frequency is consistent with the gamma-ray pulsation determined by the o...

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Bibliographic Details
Published in:arXiv.org 2013-05
Main Authors: Lin, L C C, Hui, C Y, Hu, C P, Wu, J H K, Huang, R H H, Trepl, L, Takata, J, Seo, K A, Wang, Y, Chou, Y, Cheng, K S
Format: Article
Language:English
Subjects:
Fermi Gamma-ray Space Telescope
Gamma rays
Neutron stars
Periodic variations
Pulsars
Pulsation
Space telescopes
Supernova remnants
X-rays
XMM (spacecraft)
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Summary:We report the discovery of X-ray periodicity of ~265.3 ms from a deep XMM-Newton observation of the radio-quiet gamma-ray pulsar, PSR J2021+4026, located at the edge of the supernova remnant G78.2+2.1 (gamma-Cygni).The detected frequency is consistent with the gamma-ray pulsation determined by the observation of Fermi Gamma-ray Space Telescope at the same epoch. The X-ray pulse profile resembles the modulation of hot spot on the surface of the neutron star. The phase-averaged spectral analysis also suggests that the majority of the observed X-rays have a thermal origin. This is the third member in the class of radio-quiet pulsars with the significant pulsations detected from both X-rays and gamma-ray regimes.
ISSN:2331-8422
DOI:10.48550/arxiv.1305.0998