理学 >>> 天文学 >>> 天体力学 天体物理学 天体化学 天体测量学 射电天文学 空间天文学 天体演化学 星系与宇宙学 恒星与银河系 太阳与太阳系 天体生物学 天文学其他学科
搜索结果: 1-10 共查到天文学 signature相关记录10条 . 查询时间(0.105 秒)
Recent analysis of the Homestake data has yielded evidence that the solar neutrino flux varies in time—more specifically, that it exhibits a periodic variation that may be attributed to r...
Close-in, massive exoplanets raise significant tides in their stellar hosts. We compute the radial velocity (RV) signal due to this fluid motion in the equilibrium tide approximation. The predicted ra...
The atmospheric parameters of the components of the 16Cygni binary system, in which the secondary has a gas giant planet detected, are measured accurately using high quality observational data. Abunda...
Intermediate-mass black holes (IMBHs) are of interest in a wide range of astrophysical fields. In particular, the possibility of finding them at the centers of globular clusters has recently drawn att...
Within the universe, the astrophysical sites responsible for the production of radioactive 60Fe, of half life 2.62 Myr, are primarily confined to two: Type 1a supernovae and massive stars that end the...
Measurement of redshifted 21-cm emission from neutral hydrogen promises to be the most e ective method for studying the reionisation history of hydrogen and,indirectly, the rst galaxies. These studie...
Deep NB359 imaging with Subaru by Iwata et al. have detected surprisingly strong Lyman continuum (LyC; ~900A in the rest-frame) from some LAEs at z=3.1. However, the redshifts might be misidentified d...
Gamma-ray bursts are the most luminous events in the Universe. Going beyond the short-long classification scheme we work in the context of three burst populations with the third group of intermediate ...
New insights into the Sun's chemical composition may provide a new way to search for Earth-like planets orbiting distant stars – claims an international team of astrophysicists.Astronomers have alread...
The kinematic signature of a binary central star in the collimated ejections of planetary nebulae

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...