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092284

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DataCite Commons2025-01-29 更新2025-04-15 收录
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http://esdcdoi.esac.esa.int/doi/html/data/astronomy/xmm-newton/092284.html
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NGC 7793 P13 is one of the best suited ultra-luminous X-ray pulsars to studysuper-Eddington accretion due to its easly detectable pulsations when it isX-ray bright. In 2020/2021 it was in an off-state and no longer detected bySwift/XRT but continued to spin-up indicating continued high accretion.Currently the source is in an intermediate state clearly detected by Swift/XRTbut below its historically maximum luminosity. In this state continuedmonitoring of the pulse period and spectral evolution is very interesting as itallows us to investigate if there is any change in accretion rate or if allobserved variations are due to geometric effects. We propose to continue oursuccessful campaign to monitor P13 and other sources in NGC 7793 throughout AO 22 with 2x40 ks observations. [truncated! Please see actual data for full text]
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European Space Agency
创建时间:
2025-01-29
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