AI 中文总结
该研究利用星系21厘米发射的多普勒频移和脉冲星重复率方法测定地球轨道参数，通过一年的每日漂移扫描观测，给出了21厘米观测和脉冲星观测的轨道参数值及误差，相关数据可用于教育练习。
AI 中文摘要
本文报告了利用基于星系21厘米发射的多普勒频移和脉冲星J0332+5434的重复率的方法，精确测定地球绕太阳轨道的参数。21厘米观测的轨道参数观测值和统计误差为：半长轴\(a = 1.00020 \pm 0.00015~{\rm au}\)，偏心率\(e = 0.017077 \pm 0.000077\)。脉冲星观测的观测值为\(a = 1.000034 \pm 0.000034~{\rm au}\)，\(e = 0.016667 \pm 0.000017\)。观测基于为期一年的每日漂移扫描观测，使用12.8米抛物面天线和调谐到21厘米频段的接收链。分析中使用的数据可在补充材料中用于教育练习。
英文摘要
Precision determinations of the parameters of Earth's orbit around the Sun using methods based on the Doppler shift of 21-cm emissions from the galaxy and the repetition rate of pulsar J0332+5434 are reported. The observed values and statistical errors for the orbital parameters for the 21-cm observations are semi-major axis $a = 1.00020 \pm 0.00015~{\rm au}$ and eccentricity $e= 0.017077 \pm 0.000077$. For the pulsar observations, the observed values are $a = 1.000034 \pm 0.000034~{\rm au}$ and $e=0.016667 \pm 0.000017$. The observations are based on a year-long campaign of daily drift-scan observations using a 12.8-m parabolic antenna and a receiver chain tuned to the 21-cm frequency band. The data used in the analysis are available for use in educational exercises in the supplementary material
Comments6 pages, 9 figures, This article has been submitted to the American Journal of Physics
