论文标题
Short GRB 201221D的多波长分析及其与其他高红移短GRB的比较
Multi-wavelength analysis of short GRB 201221D and its comparison with other high \& low redshift short GRBs
论文作者
论文摘要
我们提供了Short GRB 201221D躺在RedShift $ z = 1.045 $的详细分析。我们分析了爆发的高能数据，并将其与短伽马射线爆发（SGRB）的样本进行了比较。除峰值能量（$ e _ {\ rm p} $）外，迅速发射特性是其他SGRB的典型特征，该特征位于较软的端（通常在长突发的情况下）。我们通过利用{\ sc python}的软件{\ sc offector}来估算主机的星系属性，以适合主机的光谱能量分布。相对于SGRB样品，爆发是高红移的，中间红移为$ z = 0.47 $。我们将爆发特性与其他已知红移以及GRB 200826a（SGRB起源于Collapsar）进行比较。仔细检查了不同红移在不同红移处的SGRB的特征，其中一些位于高红移的SGRB具有类似于长GRB的特性，表明它们可能起源于Collapsars。对这些GRB的进一步研究可以有助于探索SGRB祖细胞系统的广泛情况。
We present a detailed analysis of short GRB 201221D lying at redshift $z= 1.045$. We analyse the high-energy data of the burst and compare it with the sample of short gamma-ray bursts (SGRBs). The prompt emission characteristics are typical of those seen in the case of other SGRBs except for the peak energy ($E_{\rm p}$), which lies at the softer end (generally observed in the case of long bursts). We estimate the host galaxy properties by utilising the {\sc Python}-based software {\sc Prospector} to fit the spectral energy distribution of the host. The burst lies at a high redshift relative to the SGRB sample with a median redshift of $z=0.47$. We compare the burst characteristics with other SGRBs with known redshifts along with GRB 200826A (SGRB originated from a collapsar). A careful examination of the characteristics of SGRBs at different redshifts reveals that some of the SGRBs lying at high redshifts have properties similar to long GRBs indicating they might have originated from collapsars. Further study of these GRBs can help to explore the broad picture of progenitor systems of SGRBs.
