Detection of an X-ray pulsation for the Gamma-ray pulsar centered in CTA 1

L. C.C. Lin, R. H.H. Huang, J. Takata, C. Y. Hwang, A. K.H. Kong, C. Y. Hui

研究成果: 雜誌貢獻期刊論文同行評審

16 引文 斯高帕斯(Scopus)


We report the detection of X-ray pulsations with a period of ∼315.87 ms from the 2009 XMM-Newton observation for the radio-quiet γ -ray pulsar, LAT PSR J0007+7303, centered in the supernova remnant CTA 1. The detected pulsed period is consistent with the γ -ray periodicity at the same epoch found with the Fermi Gamma-ray Space Telescope. The broader sinusoidal structure in the folded light curve of the X-ray emission is dissimilar to that of the γ -ray emission, and the phase of the peak is about 0.5 shifting from the peak in the γ -ray bands, indicating that the main component of the X-rays originates from different sites of the pulsar. We conclude that the main component of the X-ray pulsation is contributed by the thermal emission from the neutron star. Although with a significantly different characteristic age, PSR J0007+7303 is similar to Geminga in emission properties of X-rays and γ -rays; this makes PSR J0007+7303 the second radio-quiet γ -ray pulsar with detected X-ray pulsations after Geminga.

頁(從 - 到)L1-L5
期刊Astrophysical Journal Letters
發行號1 PART 2
出版狀態已出版 - 10 12月 2010


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