论文标题
重新访问GRB与{\ it fermi}数据I：模型属性的光谱 - 能源相关性
Revisiting the Spectral-Energy Correlations of GRBs with {\it Fermi} Data I: Model-wise Properties
论文作者
论文摘要
伽马射线爆发（GRB）表现出多种光谱。多种光谱模型（例如，频带，截止幂律和黑体）及其混合版本（例如频段+黑体）已被广泛用于拟合观察到的GRB光谱。 Here, we attempt to collect all the bursts detected by {\it Fermi}-GBM with known redshifts from July 2008 to May 2022, motivated to (i) provide a parameter catalog independent from the official \emph{Fermi}/GBM team and (ii) achieve a ``clean" model-based GRB spectral-energy correlation analysis. A nearly complete GRB sample was created, containing 153 such爆发（136张长γ射线爆发和17个短伽马射线爆发）。我们通过进行详细的光谱分析和模型比较，研究两个GRB光谱 - 能量相关性各向同性 - 溶液等效的发射能$ e_ {γ，\ rm iso} $（AMATI关系），以及（ii）各向同性 - 固定的峰值亮度$ l _ {\ rm p，iso p，iso} $（yonetoku关系）。 P，z} $和$ e_ {γ，\ rm iso} $（$ l_ {γ，\ rm iso} $）在类似频段和CPL的爆发中都可以发现，更有趣的是，CPL的爆发并不像CPL一样。密切依赖于模型的属性。
Gamma-ray bursts (GRBs) exhibit a diversity of spectra. Several spectral models (e.g., Band, cutoff power-law, and blackbody) and their hybrid versions (e.g., Band+blackbody) have been widely used to fit the observed GRB spectra. Here, we attempt to collect all the bursts detected by {\it Fermi}-GBM with known redshifts from July 2008 to May 2022, motivated to (i) provide a parameter catalog independent from the official \emph{Fermi}/GBM team and (ii) achieve a ``clean" model-based GRB spectral-energy correlation analysis. A nearly complete GRB sample was created, containing 153 such bursts (136 long gamma-ray bursts and 17 short gamma-ray bursts). Using the sample and by performing detailed spectral analysis and model comparisons, we investigate two GRB spectral-energy correlations: the cosmological rest-frame peak energy ($E_{\rm p,z}$) of the $νF_ν$ prompt emission spectrum correlated with (i) the isotropic-bolometric-equivalent emission energy $E_{γ, \rm iso}$ (the Amati relation), and (ii) the isotropic-bolometric-equivalent peak luminosity $L_{\rm p, iso}$ (the Yonetoku relation). From a linear regression analysis, a tight correlation between $E_{\rm p,z}$ and $E_{γ, \rm iso}$ (and $L_{γ,\rm iso}$) is found for both the Band-like and CPL-like bursts. More interestingly, the CPL-like bursts do not fall on the Band-like burst Amati and Yonetoku correlations, suggesting distinct radiation processes, and pointing towards the fact that these spectral-energy correlations are tightly reliant on the model-wise properties.
