期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
A Simulation of Transit Timing Variation
1
作者 Ziyue Zeng 《Journal of Applied Mathematics and Physics》 2019年第8期1861-1869,共9页
Exoplanet transit timing variation is a method to find exoplanets. To understand this method better, I wrote a computer program in python to simulate the transit of exoplanets. I use my program to simulate the transit... Exoplanet transit timing variation is a method to find exoplanets. To understand this method better, I wrote a computer program in python to simulate the transit of exoplanets. I use my program to simulate the transit timing variation observed in the Kepler-19 system. I make a simple simulation of Kepler-19 system, and this simulation shows that the variation in transit timing due to other planets is very obvious for Kepler-19b, the transiting planet, which means the transit timing variation method is very useful for finding exoplanet in Kepler-19 system. The whole paper is an illustration for that. The simulation I make is relatively simple but it still corresponds to the law of TTV, and because of its simplicity, it can help more people understand. 展开更多
关键词 EXOPLANET TRANSIT TIMING VARIATION TRANSIT TIMING Kepler-19 System
下载PDF
Ride Sharing Research
2
作者 马周行 《留学》 2019年第6期74-75,共2页
Nowadays, sharing economy is developing rapidly both in China and America, it has become a well-known term since eBay was launched. This kind of business is surprisingly beneficial to the society. First, by reducing t... Nowadays, sharing economy is developing rapidly both in China and America, it has become a well-known term since eBay was launched. This kind of business is surprisingly beneficial to the society. First, by reducing the amount of goods needed to be used, it is beneficial to the environment through preventing too much carbon footprint from slipping out: since products needed to be produced reduced too). 展开更多
关键词 SHARING ECONOMY BUSINESS GOODS needed
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部