发表机构
Nanjing University; Guangxi University; Nanjing University of Information Science and Technology; Xinjiang Astronomical Observatory, CAS; Purple Mountain Observatory, Chinese Academy of Sciences（南京大学; 广西大学; 南京信息工程大学; 中国科学院新疆天文台; 中国科学院紫金山天文台）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
研究伽马射线暴X射线坪起源，在条件泊松点过程框架内对185个长GRB均匀样本做磁星参数分层总体推断，发现不同坪形态子类无强统计分离，为磁星解释提供总体测试，表明坪形态多样无需不同磁星总体。
AI 中文摘要
伽马射线暴（GRB）中X射线坪阶段的起源仍是一个未解决的问题。特别是，具有不同时间形态（即上升、平坦或衰减坪）的GRB是否源于共同的潜在机制尚不清楚。尽管磁星能量注入是一个主要解释，但先前研究主要逐暴推断磁星属性，未在总体水平上测试该模型。本文在条件泊松点过程框架内，对185个有X射线坪的长GRB均匀样本进行了磁星参数的首次分层总体推断。发现观测到的坪总体能被物理上合理的磁星总体很好地再现。推断的参数分布在具有不同坪形态的子类之间没有强烈的统计分离。然而，所有子类都显示出相当大的固有光度散射，$\sigma_{L,\rm int}\sim0.5$ - 1.0 dex，而固有持续时间散射仍然小得多。结果为GRB X射线坪的磁星解释提供了总体水平测试，表明观测到的坪形态多样性不需要不同的磁星总体。
英文摘要
The origin of the X-ray plateau phase in gamma-ray bursts (GRBs) remains an open problem. In particular, it is unclear whether GRBs with different temporal morphologies (i.e., with a rising, flat, or decaying plateau) arise from a common underlying mechanism. Although magnetar energy injection is a leading explanation, previous studies have primarily inferred magnetar properties on a burst-by-burst basis and have not tested the model at the population level. Here we perform the first hierarchical population inference of magnetar parameters for a uniform sample of 185 long GRBs with X-ray plateaus within a conditional Poisson point-process framework. It is found that the observed plateau population is well reproduced by physically plausible magnetar populations. The inferred parameter distributions show no strong statistical separation among subclasses with different plateau morphologies. Nevertheless, all subclasses show a substantial intrinsic luminosity scatter, $σ_{L,\rm int}\sim0.5$--1.0 dex, whereas the intrinsic duration scatter remains considerably smaller. The results provide a population-level test of the magnetar interpretation of GRB X-ray plateaus, showing that the observed diversity of plateau morphologies does not require distinct magnetar populations.
Comments15 pages, 8 figures, 1 table. Submitted. Comments are welcome
