Connecting the early afterglow to the prompt GRB and the central engine in the striped jet model
Connecting the early afterglow to the prompt GRB and the central engine in the striped jet model
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将早期余辉连接到瞬时GRB和条纹喷射模型中的中央发动机
DOI：
10.1093/mnras/stad1865
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发表时间：
2023
影响因子：
4.8
通讯作者：
Giannios, Dimitrios
中科院分区：
文献类型：
--
作者：
Damoulakis, Michail;Duran, Rodolfo Barniol;Giannios, Dimitrios
尽管有一个普遍接受的框架来描述伽玛射线暴（GRB）的余辉，但中央引擎的致密物体的性质和即时发射背后的机制仍然存在争议。条纹喷流模型是一个很有前途的场所连接的各个GRB阶段，因为它给出了一个强大的预测的关系，喷流体加速度，磁化，和耗散轮廓作为距离的函数。在这里，我们使用的约束的磁化和散装洛伦兹的射流在大尺度上，射流开始与周围的气体相互作用在一个大样本的爆发（i）测试条纹射流模型的伽玛射线暴流和（ii）研究其预测的即时排放和约束的性质的中央引擎。我们发现，由模型预测的发射的光球分量的峰值与在我们的样本中的大多数爆发中观察到的即时发射光谱一致，辐射效率约为10%。此外，我们采用了两种不同的方法来关联的峰值能量的爆发与类型的中央引擎，发现更多的爆发是兼容的中子星星中央引擎相比，黑洞之一。最后，我们得出结论，该模型有利于更广泛的分布的条纹长度尺度，从而导致在一个更渐进的耗散配置文件相比的情况下，射流条纹的特点是由一个单一的长度尺度。
Despite a generally accepted framework for describing the gamma-ray burst (GRB) afterglows, the nature of the compact object at the central engine and the mechanism behind the prompt emission remain debated. The striped jet model is a promising venue to connect the various GRB stages since it gives a robust prediction for the relation of jet bulk acceleration, magnetization, and dissipation profile as a function of distance. Here, we use the constraints of the magnetization and bulk Lorentz of the jet flow at the large scales, where the jet starts interacting with the ambient gas in a large sample of bursts to (i) test the striped jet model for the GRB flow and (ii) study its predictions for the prompt emission and the constraints on the nature of the central engine. We find that the peak of the photospheric component of the emission predicted by the model is in agreement with the observed prompt emission spectra in the majority of the bursts in our sample, with a radiative efficiency of about 10 per cent. Furthermore, we adopt two different approaches to correlate the peak energies of the bursts with the type of central engine to find that more bursts are compatible with a neutron star central engine compared to a black hole one. Lastly, we conclude that the model favours broader distribution of stripe length-scales which results in a more gradual dissipation profile in comparison to the case, where the jet stripes are characterized by a single length-scale.
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DOI：
10.3847/1538-4357/aabfd8
发表时间：
2017-07
期刊：
The Astrophysical Journal
影响因子：
--
作者：
T. Laskar;E. Berger;R. Margutti;A. Zauderer;P. Williams;W. Fong;R. Sari;K. Alexander;A. Kamble
通讯作者：
T. Laskar;E. Berger;R. Margutti;A. Zauderer;P. Williams;W. Fong;R. Sari;K. Alexander;A. Kamble
DOI：
10.3847/1538-4357/ab40ce
发表时间：
2019-07
期刊：
The Astrophysical Journal
影响因子：
--
作者：
T. Laskar;H. V. Eerten;P. Schady;C. Mundell;K. Alexander;R. Duran;E. Berger;J. Bolmer;R. Chornock;D. Coppejans;W. Fong;A. Gomboc;Nuria Jordana;S. Kobayashi;R. Margutti;K. Menten;R. Sari;R. Yamazaki;V. Lipunov;E. Gorbovskoy;V. Kornilov;N. Tyurina;D. Zimnukhov;R. Podesta;H. Levato;D. Buckley;A. Tlatov;R. Rebolo;M. Serra-Ricart
通讯作者：
T. Laskar;H. V. Eerten;P. Schady;C. Mundell;K. Alexander;R. Duran;E. Berger;J. Bolmer;R. Chornock;D. Coppejans;W. Fong;A. Gomboc;Nuria Jordana;S. Kobayashi;R. Margutti;K. Menten;R. Sari;R. Yamazaki;V. Lipunov;E. Gorbovskoy;V. Kornilov;N. Tyurina;D. Zimnukhov;R. Podesta;H. Levato;D. Buckley;A. Tlatov;R. Rebolo;M. Serra-Ricart
影响因子：
4.8
作者：
I. Christie;A. Lalakos;A. Tchekhovskoy;Rodrigo Fernández;F. Foucart;E. Quataert;D. Kasen;D. Kasen
通讯作者：
I. Christie;A. Lalakos;A. Tchekhovskoy;Rodrigo Fernández;F. Foucart;E. Quataert;D. Kasen;D. Kasen
影响因子：
2.5
作者：
Ž. Bošnjak;R. Barniol Duran;A. Pe’er
通讯作者：
Ž. Bošnjak;R. Barniol Duran;A. Pe’er
GRB-SLSN 连接：未对准的磁星、弱喷流出现和观测特征
影响因子：
4.8
作者：
["B. Margalit
通讯作者：
["B. Margalit