‘Sur de nouvelles series pour le probleme de masses critiques de routh dans le probleme restreint plan des trois corps’ by J. Roels

The conclusions of the paper mentioned in the title are not in agreement with a previous paper of Meyer and Schmidt (1971). A mistake in Roels' paper is corrected which makes the two papers agree.     

大质量黑洞吸积盘的径向自引力

本文研究了大质量黑洞吸积盘的自引力,用薄盘位形上积分的方法计算了吸积盘自引力的径向与垂向分量,着重讨论了径向自引力。主要结果为:对于大质量黑洞(M～10~8—10~(10)M_⊙)吸积盘,在(R/R_g)～10~5—10~4的距离上,径向自引力会超过中心天体引力。在这个距离上,吸积盘的动力学结构完全不同于开普勒盘。提出了径向自引力不稳定扰动作为一种能源机制。本文还得到吸积盘自引力与中心天体引力量级比较的两个判据,并由此得到大质量黑洞吸积盘外半径的近似解析估计。本文结果可用于类星体和星系核吸积盘。     

On fractional kinetic equations

The subject of this paper is to derive the solution of generalized fractional kinetic equations. The results are obtained in a compact form containing the Mittag-Leffler function, which naturally occurs whenever one is dealing with fractional integral equations. The results derived in this paper provide an extension of a result given by Haubold and Mathai in a recent paper (Haubold and Mathai, 2000). This revised version was published online in July 2006 with corrections to the Cover Date.     

Reply to: “Comment on the paper ‘On the triangular libration points in photogravitational restricted three-body problem with variable mass’’’ by Varvoglis, H. and Hadjidemetriou, J.D.

Recently Varvoglis and Hadjidemetriou (Astrophys. Space Sci. doi:, 2012; hereafter referred to as paper VH) have raised two points concerning the model of the restricted three-body problem with variable mass presented in our paper (Zhang et al. in Astrophys. Space Sci. 337:107, 2012; hereafter referred to as paper ZZX) and made intensive investigations of this model. These points and investigations are very useful and here we provide some explanation and supplementary specification regarding the model presented in the paper ZZX.     

Characteristics of damping of the pulses in the Sun

This paper is a sequel to our earlier paper on the mathematical modelling in determining the rotational frequency and the density of an ionized medium. The technique is based on the measurement of the group travel time for a wave propagating in a rotating ionized medium and finally a simple approximate formula determines the rotation and the density of the medium. The present paper calculates the damping of the pulse-waves in the rotating Sun and leads to a mathematical development to estimate more physical parameters of the solar system.     

Astrometrica与MaxIm DL在天体测量中的应用与技术研究

为探究Astrometrica和MaxIm DL两个软件在天体测量中应用与处理的差异,从软件的总体情况、CCD图像的读写与变换、平场校正、参数设置、归算与堆叠等方面进行了详细的比较和研究.以中国科学院云南天文台1 m光学望远镜拍摄的M35星团的两组观测资料为例,探究了Astrometrica均值、中值和MaxIm DL...     

对脉冲星发射宇宙线能量的估计

S.Karakula等人根据Ostriker等人的脉冲星产生的宇宙线能谱依赖脉冲星年龄的理论模型,利用脉冲星发射宇宙线的最大能量:     

红外双色图中的黑体线

本文给出了各种红外双色图中的黑体线方程并进行了具体的计算。应用本文的计算结果，可以方便地确定双色图中的黑体线，而不必再进行一系列繁杂的计算。此外，文中还详细地讨论了红外双色图中黑体线的数学性质和物理意义。     

当代光学天文望远镜控制系统新技术

对当代光学天文望远镜控制系统技术之进展进行了综述，同时也对这一领域的未来发展作了一些预测，以期给这一领域的控制工程师们提供一个与他们专业需要有关的概貌。     

Application of the extended Delaunay method to the ideal resonance problem

In this paper, an application of the extended Delaunay methods is made to the ideal resonance problem. We show how the theory of integration proposed in a preceding paper works in a simple problem, and discuss how to proceed in more complicated situations.     

全息测量接收机系统

简单介绍了微波全息测量的原理、用于微波全息测量的接收机系统,然后比较详细地叙述了对该接收机系统相位稳定性的测试,指出了当前接收系统的主要问题.并对接收系统的改进做了两种设计方案.     

The Expansion of the Hamiltonian of the Two-Planetary Problem into a Poisson Series in All Elements: Estimation and Direct Calculation of Coefficients

This is the second paper in a series of articles devoted to one of the basic problems of celestial mechanics: the evolution of solar-type planetary systems. In the first paper (Kholshevnikov et al., 2001), we reviewed the history and the current state of the issue, outlined the scheme of the study, introduced Jacobi coordinates and related osculating elements, and indicated the form of the Hamiltonian expansion into a Poisson series in all elements. In this paper, the expansion coefficients are found according to a simple algorithm that is reduced to the calculation of multiple integrals of elementary functions. At the first stage, we restricted our analysis to the two-planetary problem (Sun–Jupiter–Saturn). The general case will be investigated in a forthcoming paper.     

Hydromagnetic shock structure in high temperature hypersonic flow

The paper studies the structure of a hydromagnetic shock wave, which is so strong that down-stream of the shock the gas radiates thermally. However, in the study the general differential approximation for radiation is invoked and solution is compared with that in an earlier paper for an optically thick gas.     

定天镜伺服驱动系统的软件设计

恒星光干涉议定天镜的转动是用五相步进电机来驱动的，它需要的控制信号由软件实现。软件设计是控制系统中最困难的部分，尽可能地用软件实现硬件功能，不仅可以降低成本，更重要的是，便于更新及升级。在观测过程全自动化的前提下，着重提出了我国恒星光干涉议实验系统中定天镜子系统的软件设计方案。     

全息测量接收机系统

简单介绍了微波全息测量的原理、用于微波全息测量的接收机系统,然后比较详细地叙述了对该接收机系统相位稳定性的测试,指出了当前接收系统的主要问题。并对接收系统的改进做了两种设计方案。     

Phenomenology of the Lense-Thirring effect in the Solar System: Measurement of frame-dragging with laser ranged satellites

In this paper we respond to the criticisms of “Phenomenology of the Lense-Thirring effect in the Solar System” by Iorio et al. about the general relativistic phenomena of gravitomagnetism and frame-dragging. The claims of the paper by Iorio et al. are not reproducible in any of our independent analyses.     

钢带/钢环光栅码在2.16m望远镜的应用

简要介绍了目前比较流行的新型位置/角度传感器———钢带/钢环光栅码的工作原理;同时着重介绍了它们在2.16m望远镜的安装、使用情况,它改善了望远镜的定位精度和跟踪精度,因此有效地提高了望远镜的工作效率。     

毫秒脉冲量计时方法的研究进展和前景

介绍脉冲星的时间频率特征,脉冲星时间研究的意义,毫秒脉冲星计时理论方法和技术方面的研究进展,对其中的关键问题给予讨论．并对其发展前景进行了展望．     

Orbit and spin evolution of synchronous binary stars on the main sequence(a theoretical improvement to the analytical method)

This paper provides a method to study the solution of equations for synchronous binary stars with large eccentricity on the main sequence.The theoretical results show that the evolution of the eccentricity is linear with time or follows an exponential form,and the semi-major axis and spin vary with time in an exponential form that are different from the results given in a previous paper.The improved method is applicable in both cases of large eccentricity and small eccentricity.In addition,the number of terms in the expansion of a series with small eccentricity is very long due to the series converging slowly.The advantage of this method is that it is applicable to cases with large eccentricity due to the series converging quickly.This paper chooses the synchronous binary star V1143 Cyg that is on the main sequence and has a large eccentricity(e = 0.54) as an example calculation and gives the numerical results.Lastly,the evolutionary tendency including the evolution of orbit and spin,the time for the speed up of spin,the circularization time,the orbital collapse time and the life time are given in the discussion and conclusion.The results shown in this paper are an improvement on those from the previous paper.     

台湾花莲地震分析

分析了台湾花莲地区本世纪以来 7级以上地震的可公度性 ,并指出1 999年 9月 2 1日地震发生的必然性 ,同时也分析了这次地震时的天体位置及引潮力特征。