AI 中文总结
该研究分析2020-2023年6种天文期刊的3.7万余篇论文，发现周末提交的arXiv预印本中位引用次数显著低于工作日，且该劣势与周一公告列表规模扩大或周末论文构成差异相关。
AI 中文摘要
我们研究了经同行评审的天文学论文的被引次数是否与其arXiv预印本发布的星期几存在系统关联。我们使用NASA ADS的引用数据，针对2020至2023年间发表在6种期刊（MNRAS、ApJ、ApJL、ApJS、A&A和JCAP；共37173篇astro-ph类主预印本的论文）上的所有经同行评审文章，结合arXiv API的第1版提交时间戳进行分析。我们按论文提交的工作日、以及arXiv公告批次的发布日期对论文分组，同时考虑arXiv的工作日截止规则及周末无公告的情况。鉴于引用分布的高度偏态性，我们采用各组论文的中位引用次数作为主要统计量，并计算自助法置信区间。周末提交的论文全部出现在周一的公告列表中，其中位引用次数在6种期刊中的5种里显著低于工作日提交的论文，降幅为12%至26%；第6种期刊（JCAP）也呈现相同趋势，但因周末样本量小而无统计学显著性，这与粒子和核物理学领域近期报道的周末引用劣势结果一致。五个工作日提交的论文之间中位引用次数无显著差异。该研究将粒子和核物理学领域报道的周末引用劣势扩展至天文学领域，此关联为相关性，可能源于周末提交论文的构成差异，或因周一公告列表规模扩大导致论文可见性降低。
英文摘要
We examine whether the citations received by refereed astronomy papers vary systematically with the day of the week of their arXiv preprint release. We use NASA ADS citation data for all refereed articles published in 2020--2023 in six journals (MNRAS, ApJ, ApJL, ApJS, A\&A and JCAP; 37,173 papers with astro-ph primary preprints), combined with version-1 submission timestamps from the arXiv API. We group papers both by submission weekday and by the day their announcement batch appears on arXiv, accounting for arXiv's weekday deadline and lack of weekend announcements. Given the heavy skew of citation distributions, our primary statistic is the median citations per group, with bootstrap confidence intervals. Papers submitted on weekends, all of which appear in the Monday listing, have median citations significantly lower than weekday submissions in five of the six journals, by 12--26 \%; the sixth (JCAP) shows the same direction, but not significantly, consistent with its small weekend sample. Median citations are indistinguishable across the five weekdays. These results extend the recently reported weekend citation disadvantage in particle and nuclear physics to astronomy. The link is correlational, consistent with either compositional variations in weekend submissions or reduced visibility in the enlarged Monday listings.
Comments11 pages, 3 figures
