Synchrotron emission polarization is very sensitive to the magnetic field configuration.Recently,polarization of synchrotron emission with a mixed (SM) magnetic
In 21 cm intensity mapping,the spectral smoothness of the foreground is exploited to separate it from the much weaker 21 cm signal.However,the non-smooth freque
Dome A,Antarctica,has been thought to be one of the best astronomical sites on the Earth for decades.Since it was first visited by astronomers in 2008,dozens of
The age pattern across spiral arms is one of the key observational features utilised to study the dynamic nature of the Galaxy's spiral structure.With the most
安岳气田高石梯区块下寒武统龙王庙组气藏自高石6井投入试采以来,表现出单井稳产能力强、井控储量大的特征,展现了气藏较大的勘探开发潜力。通过对区内实钻显示、岩屑、取心、测井、测试、生产动态等静动态资料综合研究后认为:①与受构造控制的磨溪主体区块龙王庙组气藏不同,高石梯区块龙王庙组储层主要受沉积相控制,颗粒滩相储层发育,滩间海储层欠发育;②纵向上龙二段储层较发育,主要发育4个滩体;③实钻、试采证实滩体内储层连通性较好,流体分布受构造控制,滩体间储层欠发育,连通性差,每个滩体具有不同的气水界面,处于构造低部位滩体
Considering the importance of investigating the transit timing variations (TTVs) of transiting exoplanets,we present a follow-up study of HAT-P-12b.We include s
Accretion induced collapse (AIC) may be responsible for the formation of some interesting neutron star binaries (e.g.,millisecond pulsars,intermediate-mass bina
The present investigation attempts to quantify the temporal variation of Solar Flare Index (SFI)with other activity indices during solar cycles 21-24 by using d
Observations of the sky irradiation intensity in the visible wavelengths during a solar eclipse permit to model the Sun diameter,a key number to constrain the i
针对徐深气田A区块火山岩气藏储量动用程度低、稳产能力差的问题,开展了井间加密试验,而加密井一旦与老井连通,不确定其能否提高储量动用程度。为此,采用分区物质平衡方程技术分析了井控动态储量变化过程,结合火山岩气井动态储量结构特点,提出了连通气井间动态储量变化的3种特征:①持续增长型,加密井与老井动态储量逐步增加,相互间储量无明显干扰,加密后提高储量动用程度;②干扰型,加密井的动态储量全部源于分采老井的储量,加密后主要提高采气速度;③干扰—增长交互型,加密井既分采了老井的储量,又动用新的储量,加密后可提高储量动