发表机构
University of Public Service; Eötvös Loránd University; HUN-REN Research Centre for Astronomy and Earth Sciences, Konkoly Thege Miklós Astronomical Institute（公共服务大学; 罗兰大学; 匈牙利科学院天文学与地球科学研究中心，科诺尔·特热·米克洛什天文研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究利用Swift卫星数据，通过生存分析研究GRB光学亮度影响因素，发现此前报道的GRB持续时间、伽马流量与光学亮度的显著关联在更大样本中未被观测到，需进一步探究相关潜在过程。
AI 中文摘要
在对Neil Gehrels Swift天文台卫星运行期间测得的伽马射线暴（GRBs）光学性质的研究中，取得了重要发现。该卫星可同时测量伽马射线、X射线和光学数据，但在许多情况下，光学波段仅能得到上限值。因此，需要采用生存分析（又称可靠性建模）作为工具，用于研究这类仅存在上限值的样本，该方法适用于分析包含上限或下限而非精确观测值但仍蕴含相关信息的数据集。此前已有研究指出，伽马射线暴的持续时间、伽马流量和峰值通量均对光学亮度分布有显著影响，这可能源于伽马射线暴中心引擎的喷流能量。但在分析超过200个数据点后，本研究未观测到该关联，这表明此前报道的影响可能没有推导的那么显著，需进一步研究以明确决定伽马射线暴光学亮度及其与伽马射线性质关联的潜在过程。
英文摘要
During the examination of optical properties of gamma-ray bursts (GRBs) measured during the life of the Neil Gehrels Swift Observatory satellite, significant discoveries were made. While the satellite measures gamma, X-ray, and optical data simultaneously, in many cases, only an upper limit is established in the optical domain. Hence, survival analysis, a.k.a. dependability modelling, was necessary, serving as a tool for studying samples where some cases are bound only by the upper limit, as mentioned earlier. This method is used to analyse datasets that may have upper or lower bounds rather than precise observations, but nevertheless contain relevant information. It was previously established that the duration, gamma fluence, and peak flux all have a substantial effect on the optical brightness distribution, probably due to the energy of the beam from the GRB's central engine. However, after analysing more than 200 data points, we no longer see this association. This disagreement shows that the previously reported impact may not be as significant as previously derived, needing more research to better understand the underlying processes that determine the optical brightness in connection to gamma-ray properties.
Comments9 pages, 5 figures, accepted for publication
Journal refActa Polytechnica, 2025, Volume 65, Issue 1, pp. 101-109
