本文重新研究了不同伽马射线暴样本的光度函数和事件率对样本选择和阈值效应的依赖性。为了与以往的研究进行比较，我们选取了88个和118个红移和峰值通量大于2.6 ph cm $^{-2}$ s $^{-1}$的长爆发样本，从中挑选出79个长爆发构成我们的完整样本。发现亮度随红移的演化可以用$L\propto(1+z)^k$表示，但不同的$k$依赖于样品的选择。有趣的是，无论是非演化光度或红移的累积分布被发现也是由样品的选择，而不是仪器的灵敏度。然而，我们的样品的非演化光度类似地分布，具有相当的破裂光度$L_0\sim10^{51}$ erg s $^{-1}$。重要的是，我们用K-S检验验证了两个爆发样本的事件率随红移的三种情况下，除了由于在低红移的$z<1$的采样差异而导致的小的差异之外，类似地演化，其中所有的事件率都显示出过度的高斯轮廓，而不是单调下降，无论样本是否完整。最重要的是，我们发现，爆发率违反恒星形成率在低红移，而他们都是好的，在高红移地区，彼此一致，许多作者以前发现的。因此，我们预测，两种类型的长爆发的青睐，在他们的协会与恒星形成和宇宙金属丰度。
英文摘要：
In this work, we restudy the dependence of luminosity function and event rates for different gamma-ray burst samples on the criteria of sample selection and threshold effect. To compare with many previous studies, we have chosen two samples including 88 and 118 long bursts with known redshift and peak flux over 2.6 ph cm$^{-2}$ s$^{-1}$, from which 79 bursts are picked out to constitute our complete sample. It is found that the evolution of luminosity with redshift can be expressed by $L\propto(1+z)^k$ with a diverse $k$ relied more on the sample selection. Interestingly, the cumulative distributions of either non-evolving luminosities or redshifts are found to be also determined by the sample selection rather than the instrumental sensitivity. Nevertheless, the non-evolving luminosities of our samples are similarly distributed with a comparable break luminosity of $L_0\sim10^{51}$ erg s$^{-1}$. Importantly, we verify with a K-S test that three cases of event rates for the two burst samples evolve with redshift similarly except a small discrepancy due to sampling differences at low-redshift of $z<1$, in which all event rates show an excess of Gaussian profile instead of monotonous decline no matter whether the sample is complete. Most importantly, it is found that the burst rates violate the star formation rate at low redshift, while both of them are good in agreement with each other in the higher-redshift regions as many authors discovered previously. Therefore, we predict that two types of long bursts are favored in terms of their associations with both the star formation and the cosmic metallicity.
Comparative properties of X-Ray Flashes and Gamma-Ray Bursts from BeppoSAX observations of Fast X-ray Transients
INAF – Istituto di Astrofisica e Planetologia Spaziali（意大利国家天体物理研究所）；SRON Space Research Organization Netherlands（荷兰空间研究组织）；OzGrav ARC Centre of Excellence, The University of Western Australia（西澳大利亚大学）；College of Science and Mathematics, University of the Virgin Islands（维尔京群岛大学理学院）；Dept. of Physics and Earth Science, University of Ferrara（费拉拉大学物理与地球科学系）；INAF-OAS Bologna（意大利国家天体物理研究所博洛尼亚天文台）；ESTEC, ESA（欧洲空间局技术研究中心）
Redshift Classification of Optical Gamma-Ray Bursts using Supervised Learning
Indian Institute of Science Education and Research (IISER) Mohali（印度科学教育研究所莫哈利分校）；National Astronomical Observatory of Japan（日本国立天文台）；The Graduate University for Advanced Studies (SOKENDAI)（日本高级研究院）；Space Science Institute（空间科学研究所）；Clemson University（克莱姆森大学）；University of Wroclaw（弗罗茨瓦夫大学）；Purple Mountain Observatory, Chinese Academy of Sciences（中国科学院紫金山天文台）；National Centre for Nuclear Research（国家核研究中心）；Jagiellonian University（亚捷隆大学）；University of Nevada, Las Vegas（内华达大学拉斯维加斯分校）；University of California, Santa Cruz（加州大学圣克鲁兹分校）；Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU)（宇宙物理与数学 Kavli 研究所）
Gamma-Ray Burst Light Curve Reconstruction: A Comparative Machine and Deep Learning Analysis
Swinburne University of Technology（斯威本科技大学）；Indian Institute of Technology, Hyderabad（印度理工学院海得拉巴分校）；Panjab University（潘迪特大学）；National Astronomical Observatory of Japan（日本国立天文台）；The Graduate University for Advanced Studies, SOKENDAI（综合研究大学院大学）；Nevada Center for Astrophysics, University of Nevada（内华达天体物理中心，内华达大学）；Space Science Institute（空间科学研究所）；PSIT College（PSIT学院）；Indian Institute of Technology, Kharagpur（印度理工学院卡拉格普尔分校）；KNIT Sultanpur（苏丹布尔国家工程学院）；IISER Bhopal（博帕尔印度科学教育研究中心）
Searches for inspiral gravitational waves associated with short gamma-ray bursts in LIGO's fifth and Virgo's first science run
两个致密物体的合并，比如两颗中子星或一颗中子星和一个黑洞，很可能是短伽马射线暴的起源。这些事件也是有希望的引力波来源，目前正在激发国际引力波探测器网络的相关搜索。在这里，我们描述了一个搜索的引力波从螺旋阶段的两个合并紧凑的对象，在巧合的短伽玛射线暴发生在LIGO的第五次科学运行和处女座的第一次科学运行。这次搜索包括22个GRB，这些GRB的数据来自LIGO/Virgo网络中的多个探测器。没有发现统计上显著的引力波候选者，参数检验表明在我们的伽玛暴样本中没有多余的弱引力波信号。90%~ C. L.在中子星-黑洞祖先模型假设下，我们的样本中伽玛暴的中位排斥距离为6.7 Mpc。
The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/VIRGO GW170817. VIII. A Comparison to Cosmological Short-duration Gamma-ray Bursts
Gamma-Ray Bursts: Evidence for a Common Origin of X-ray Plateaus with Diverse Temporal Decay Index
School of Astronomy and Space Science, Nanjing University（南京大学天文与空间科学学院）；Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education（教育部现代天文学和天体物理学重点实验室（南京大学））；Purple Mountain Observatory, Chinese Academy of Sciences（中国科学院紫金山天文台）；Institute of Space Weather, Nanjing University of Information Science and Technology（南京信息工程大学空间天气研究所）；School of Cyber Science and Engineering, Qufu Normal University（曲阜师范大学网络空间安全学院）；Institute of Fundamental Physics and Quantum Technology, Ningbo University（宁波大学基础物理与量子技术研究所）；School of Physical Science and Technology, Ningbo University（宁波大学物理科学与技术学院）；State Key Laboratory of Radio Astronomy and Technology, Xinjiang Astronomical Observatory, CAS（中国科学院新疆天文台射电天文与技术国家重点实验室）；Xinjiang Key Laboratory of Radio Astrophysics（新疆射电天文重点实验室）
