论文标题
以111 MHz的频率研究北半球的明亮紧凑型无线电源
Study of Bright Compact Radio Sources of the Northern Hemisphere at the frequency of 111 MHz
论文作者
论文摘要
使用行星际闪烁的方法进行了搜索强（$ s_ {int} \ ge 5 $ jy）从Pushchino目录中从Pushchino目录中的离散无线电源的搜索。总共检查了3620个来源，发现其中812个是紧凑的（闪烁）组件。这些紧凑型组件的磁通密度波动的估计值是从闪烁索引（$ m_ {max} $）得出的，与$ 25^o $的伸长率相对应。估计了具有紧凑成分的178个来源的角度大小和紧凑性。确定了与紧凑型组件（$ M_ {max} $）相对应的源的闪烁指标，并确定了紧凑型组件的通量密度。已经证明，与太阳能活动的11年周期有关的星际血浆空间分布的缓慢变化可能对源量的角度大小的估计产生系统的影响。使用强度波动的统计分布的不对称系数，发现了与太阳风的球形对称性偏差的偏差的系数。样品中源参数之间的相关性的研究表明，随着综合通量的增加，闪烁指数的最大值降低，而角度大小对整合通量的依赖性均未明显依赖。
The search for compact components of strong ($S_{int} \ge 5$ Jy at 102.5 MHz) discrete radio sources from the Pushchino catalogue was carried out using the method of interplanetary scintillation. A total of 3620 sources were examined, and 812 of them were found to compact (scintillating) components. Estimates of fluctuations of the flux density of these compact components were derived from the scintillation index ($m_{max}$) corresponding to an elongation of $25^o$. The angular size and compactness of 178 sources with compact components were estimated. Scintillation indices of sources corresponding to the compact component ($m_{max}$) and flux densities of compact components were determined. It was demonstrated that slow variations of the spatial distribution of interplanetary plasma, which are related to the 11-year cycle of solar activity, may exert a systematic influence on the estimates of angular sizes of sources. Coefficients compensating the deviation from the spherical symmetry of solar wind in the estimates of angular sizes were found using the coefficient of asymmetry of the statistical distribution of intensity fluctuations. The study of correlations between the parameters of sources in the sample revealed that the maximum value of the scintillation index decreases as the integrated flux increases, while the angular size has no marked dependence on the integrated flux.
