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PSR J1311–3430 is a pulsar with a spin period of 2.5 milliseconds. It is the first millisecond pulsar found via gamma-ray pulsations. The source was originally identified by the Energetic Gamma Ray Experiment Telescope as a bright gamma ray source, but was not recognized as a pulsar until observations with the Fermi Gamma-ray Space Telescope discovered pulsed gamma ray emission. The pulsar has a helium-dominated companion much less massive than itself, and the two are in an orbit with a period of 93.8 minutes. The system is explained by a model where mass from the low mass companion was transferred on to the pulsar, increasing the mass of the pulsar and decreasing its period. These systems are known as Black Widow Pulsars, named after the original such system discovered, PSR B1957+20, and

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  • PSR J1311–3430 (en)
  • PSR J1311-3430 (nl)
  • PSR J1311–3430 (zh)
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  • PSR J1311–3430是一顆自轉週期2.5毫秒的脈衝星，是第一顆經由觀測伽瑪射線脈動發現的毫秒脈衝星，最早由康普顿伽玛射线天文台搭載的（EGRET）偵測為一個明亮的伽瑪射線來源，但在费米伽玛射线空间望远镜偵測到它的伽瑪射線輻射脈動之前並不被認為是脈衝星。這顆脈衝星有一顆主要以氦組成，且質量遠小於它的伴星，軌道週期93.8分鐘。這個系統可以從低質量伴星向脈衝星進行質量轉移，使脈衝星質量增加並縮短週期的模型解釋。這樣的系統就是所謂的「黑寡婦脈衝星」，名稱由來於第一個被發現的這種系統PSR B1957+20，這樣的系統甚至可能讓伴星最終完全蒸發。在這樣的系統中，PSR J1311–3430 是目前已知軌道週期最短的。對該系統的光譜觀測顯示系統脈衝星的質量是2.7 （太陽質量）。雖然這個預測有很大的不確定性，該脈衝星的最小質量資料擬合符合2.15 的狀況，因此質量仍高於先前的脈衝星質量紀錄保持者。 (zh)
  • PSR J1311–3430 is a pulsar with a spin period of 2.5 milliseconds. It is the first millisecond pulsar found via gamma-ray pulsations. The source was originally identified by the Energetic Gamma Ray Experiment Telescope as a bright gamma ray source, but was not recognized as a pulsar until observations with the Fermi Gamma-ray Space Telescope discovered pulsed gamma ray emission. The pulsar has a helium-dominated companion much less massive than itself, and the two are in an orbit with a period of 93.8 minutes. The system is explained by a model where mass from the low mass companion was transferred on to the pulsar, increasing the mass of the pulsar and decreasing its period. These systems are known as Black Widow Pulsars, named after the original such system discovered, PSR B1957+20, and (en)
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  • PSR J1311–3430 (en)
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  • J2000 (en)
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  • 2.5 ms (en)
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  • PSR J1311–3430 is a pulsar with a spin period of 2.5 milliseconds. It is the first millisecond pulsar found via gamma-ray pulsations. The source was originally identified by the Energetic Gamma Ray Experiment Telescope as a bright gamma ray source, but was not recognized as a pulsar until observations with the Fermi Gamma-ray Space Telescope discovered pulsed gamma ray emission. The pulsar has a helium-dominated companion much less massive than itself, and the two are in an orbit with a period of 93.8 minutes. The system is explained by a model where mass from the low mass companion was transferred on to the pulsar, increasing the mass of the pulsar and decreasing its period. These systems are known as Black Widow Pulsars, named after the original such system discovered, PSR B1957+20, and may eventually lead to the companion being completely vaporized. Among systems like these, the orbital period of PSR J1311–3430 is the shortest ever found. Spectroscopic observations of the companion suggest that the mass of the pulsar is 2.7 (solar masses). Though there is considerable uncertainty in this estimate, the minimum mass for the pulsar that the authors find adequately fits the data is 2.15 , which is still more massive than PSR J1614−2230, the previous record holder for most massive known pulsar. (en)
  • PSR J1311–3430是一顆自轉週期2.5毫秒的脈衝星，是第一顆經由觀測伽瑪射線脈動發現的毫秒脈衝星，最早由康普顿伽玛射线天文台搭載的（EGRET）偵測為一個明亮的伽瑪射線來源，但在费米伽玛射线空间望远镜偵測到它的伽瑪射線輻射脈動之前並不被認為是脈衝星。這顆脈衝星有一顆主要以氦組成，且質量遠小於它的伴星，軌道週期93.8分鐘。這個系統可以從低質量伴星向脈衝星進行質量轉移，使脈衝星質量增加並縮短週期的模型解釋。這樣的系統就是所謂的「黑寡婦脈衝星」，名稱由來於第一個被發現的這種系統PSR B1957+20，這樣的系統甚至可能讓伴星最終完全蒸發。在這樣的系統中，PSR J1311–3430 是目前已知軌道週期最短的。對該系統的光譜觀測顯示系統脈衝星的質量是2.7 （太陽質量）。雖然這個預測有很大的不確定性，該脈衝星的最小質量資料擬合符合2.15 的狀況，因此質量仍高於先前的脈衝星質量紀錄保持者。 (zh)
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