遇见数据集

Magnetar+Bump Modeling of Superluminous Supernovae

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Zenodo2022-08-25 更新2026-05-25 收录
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These data files are associated with the article "Bumpy Declining Light Curves are Common in Hydrogen-poor Superluminous Supernovae." This repository contains four directories, described below. <strong>MOSFiT Output Files</strong> The "mosfit" directory contains the raw output files from the Modular Open-Source Fitter for Transients (Guillochon et al. 2017). See its documentation for the output format. Keep in mind that some detections have been converted into nondetections in these files (see the paper for a full explanation), so you should not use them as a source for the photometry. <strong>Magnetar Models</strong> The "models" directory contains the range of models for each supernova. These are stored as ECSV files, which can be read using Astropy tables. The columns are MJD, filter, apparent magnitude (median, minimum, maximum), and absolute magnitude (median, minimum, maximum). The metadata contains the median and standard deviation of each parameter discussed in the paper, as well as the supernova name, distance modulus, and extinction. <strong>Magnetar Parameters</strong> The "params" directory contains the magnetar model parameters corresponding to each model realization, also stored as ECSV files. In other words, you can use these files to reproduce the posterior for each parameter. The metadata contains the units for each parameter and a LaTeX representation of each variable name. <strong>Bump Models</strong> The "bumps" directory contains the raw output for the bump modeling. These are stored as compressed Numpy files (.npz) and can be read using np.load. The keywords are as follows: "chain": the flattened MCMC chain, stored as a 2D array. The 0th dimension corresponds to the number of walkers times the number of steps. The 1st dimension corresponds to the parameters: amplitude, center (MJD), and FWHM (observed days). In the case of 2 bumps, the parameters are amplitude 1, center 1, FWHM 1, amplitude 2, center 2, FWHM 2. "pmed": the median of each parameter, followed by the median absolute deviation for each parameter (converted to a standard deviation). "energies": the integrated energy in each model realization (in watt-days). "energy": the median of the “energies” array. "denergy": the median absolute deviation of the “energies” array (converted to a standard deviation). "integral": the integral of the magnetar residuals before modeling (in watt-days). This is not used in the paper. "t0" and "t1": the range of MJDs used in the bump fitting. If you have any questions about this dataset, feel free to contact the author, Griffin Hosseinzadeh.

本数据集关联论文《贫氢超亮超新星光变曲线普遍存在缓降凸起特征》。本仓库包含四个目录,具体说明如下。 **MOSFiT 输出文件**:"mosfit"目录存放模块化开源瞬变源拟合器(Modular Open-Source Fitter for Transients,MOSFiT)的原始输出文件(Guillochon et al. 2017)。请参考其官方文档了解输出格式。请注意,本数据集部分探测数据在文件中已被标记为非探测数据(详细解释见论文),因此请勿将其作为测光数据源使用。 **磁星模型**:"models"目录存放每颗超新星的系列模型文件,格式为ECSV文件,可通过Astropy表格库读取。文件包含以下列字段:修正儒略日(Modified Julian Date,MJD)、滤光片类型、视星等(中位数、最小值、最大值)以及绝对星等(中位数、最小值、最大值)。元数据包含论文中讨论的各参数的中位数与标准差,同时附带超新星名称、距离模数与消光值。 **磁星参数**:"params"目录存放对应各模型实现的磁星模型参数,同样以ECSV文件格式存储。换言之,可通过本目录文件复现各参数的后验分布。元数据包含各参数的单位,以及各变量名的LaTeX表示形式。 **凸起建模结果**:"bumps"目录存放凸起建模的原始输出文件,格式为压缩Numpy文件(.npz),可通过np.load读取。其包含的关键字段如下: "chain":展平的马尔可夫链蒙特卡洛(Markov Chain Monte Carlo,MCMC)采样链,存储为二维数组。第0维对应采样行走者数量与采样步数的乘积,第1维对应参数:振幅、中心位置(MJD)与半高全宽(观测日数)。若存在两个凸起,则参数顺序为振幅1、中心1、半高全宽1、振幅2、中心2、半高全宽2。 "pmed":各参数的中位数,其后依次为各参数的中位数绝对偏差(已转换为标准差形式)。 "energies":各模型实现的积分能量(单位:瓦·日)。 "energy":"energies"数组的中位数。 "denergy":"energies"数组的中位数绝对偏差(已转换为标准差形式)。 "integral":建模前磁星残差的积分值(单位:瓦·日),论文中未使用该字段。 "t0"与"t1":凸起拟合过程中使用的MJD范围。 若您对本数据集有任何疑问,请联系作者Griffin Hosseinzadeh。

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Zenodo
创建时间:
2022-04-01
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