Unpulsed Optical Emission from the Crab Pulsar
Unpulsed Optical Emission from the Crab Pulsar
复制标题
蟹状脉冲星的非脉冲光发射
DOI：
10.1086/308826
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Gregory Beskin
中科院分区：
文献类型：
--
作者：
A. Golden;Andy Shearer;Gregory Beskin
根据利用俄罗斯高加索地区特殊天体物理观测站的6米望远镜在UBV波段使用Triffid高速成像光度计观测到的Crab脉冲星，我们报告了在所谓的发射关闭阶段探测到显著发射的情况。在消光后，这种非脉冲发射分量符合指数为α=-0.6±0.37的幂定律，其不确定度主要是与用于参考Triffid数据的独立CCD光度测量有关的误差。这表明总积分光谱比文献中其他地方报道的更陡峭的幂定律形式，基本上与α~0.1时持平，尽管这种情况下的差异仅在≤2σ水平上显著。在这些波段进行更深入的参考积分和Triffid相分辨光度测量，再加上在UV和R区域的进一步观测，将进一步限制这种适配。
Based on observations of the Crab pulsar using the TRIFFID high-speed imaging photometer in the UBV bands using the Special Astrophysical Observatory's 6 m telescope in the Russian Caucasus, we report the detection of pronounced emission during the so-called off phase of emission. Following de-extinction, this unpulsed component of emission is shown to be consistent with a power law with an exponent of α = -0.60 ± 0.37, the uncertainty being dominated by the error associated with the independent CCD photometry used to reference the TRIFFID data. This suggests a steeper power-law form than that reported elsewhere in the literature for the total integrated spectrum, which is essentially flat with α ~ 0.1, although the difference in this case is only significant at the ≤2 σ level. Deeper reference integrated and TRIFFID phase-resolved photometry, in these bands in conjunction with further observations in the UV and R region, would constrain this fit further.