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EGRET DETECTION OF PULSED GAMMA RADIATION FROM PSR B1951 + 32

机译:PSR B1951 + 32脉冲伽玛辐射的整体检测

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摘要

We detected a sixth high-energy gamma-ray pulsar, PSR B1951+32, pulsating in gamma rays at E ≥ 100 MeV with the same 39.5 ms periodicity as in radio, using the data obtained during 1991 May to 1994 July by the Energetic Gamma Ray Experiment Telescope (EGRET) aboard the Compton Gamma Ray Observatory. Although seen only as a weak source amidst the high background of galactic disk emission, the pulsation in high-energy gamma rays is clearly seen. The pulsed radiation has a photon spectral index of -1.74 ± 0.11. There is no evidence as yet for unpulsed emission from the object. The pulsar appears to have an efficiency of ~0.004 for converting its rotational energy loss into gamma rays at E ≥ 100 MeV.
机译:我们使用1991年5月至1994年7月由高能伽玛获得的数据,检测到第六个高能伽玛射线脉冲星PSR B1951 + 32,以E≥100 MeV的伽玛射线脉动,周期与无线电相同,为39.5 ms。康普顿伽玛射线天文台上的射线实验望远镜(EGRET)。尽管在银河盘发射的高背景中仅被视为弱光源,但可以清楚地看到高能伽马射线的脉动。脉冲辐射的光子光谱指数为-1.74±0.11。尚无证据表明物体无脉冲发射。脉冲星在E≥100 MeV时将其旋转能量损失转换为伽马射线的效率约为0.004。

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