论文标题
Maxi J1535-571，Maxi J1820+070和Maxi J1348-630爆发的整体研究-I。高能发射的检测和极化特性
INTEGRAL study of MAXI J1535-571, MAXI J1820+070 and MAXI J1348-630 outbursts -- I. Detection and polarization properties of the high-energy emission
论文作者
论文摘要
在黑洞X射线二进制中，有时在200 keV以上的能量下检测到非热的高能成分。该组件的起源是有争议的，不同的光谱模型可以导致不同的解释。具有积分不优势的高能极化测量允许对负责MEV光谱成分的物理学进行新的诊断。在这项工作中，我们旨在研究Maxi发现的三种明亮来源的高能行为：Maxi J1535-571，Maxi J1820+070和Maxi J1348-630。我们利用它们的亮度来研究其柔软的伽马射线（0.1-2 MEV）特性，具有积分。我们使用光谱和极化方法来探测它们的高能发射，目的是对〜MEV发射产生新的限制。我们首先使用JEM-X，IBIS和SPI在3-2000 KEV中使用半光学学描述来研究源的光谱特性。然后，我们将IBIS用作康普顿望远镜，以评估300 KEV以上的源的极化特性。 在Maxi J1535-571的HIMS和SIMS，Maxi J1820+070的LHS和Maxi J1348-630的LHS中检测到高能组件。在Maxi J1820 +070中检测到的组件和Maxi J1348-630的极化分别为26 +/- 9°，在300-1000 KEV中分别> 56％。由于没有关于Maxi J1535-571的极化信息，因此检测到的组件可以来自喷气机或电晕。在Maxi J1820+070的情况下，在红外线中测得的同步加速器谱的外推表明该分量可能是由于来自混合电晕的电子分布而引起的。对于Maxi J1348-630，高极化的高部分指向喷气机的起源，但是，如果没有任何红外数据，我们就无法正式得出结论。
In black hole X-ray binaries, a non-thermal high-energy component is sometimes detected at energies above 200 keV. The origin of this component is debated and distinct spectral modelizations can lead to different interpretations. High-energy polarimetry measurements with INTEGRAL allow new diagnostics on the physics responsible for the MeV spectral component. In this work, we aim to investigate the high-energy behavior of three bright sources discovered by the MAXI: MAXI J1535-571, MAXI J1820+070 and MAXI J1348-630. We take advantage of their brightness to investigate their soft gamma-ray (0.1-2 MeV) properties with INTEGRAL. We use both spectral and polarimetric approaches to probe their high-energy emission with the aim to bring new constraints on the ~ MeV emission. We first study the spectral characteristics of the sources in the 3-2000 keV using JEM-X, IBIS and SPI with a semi-phenomenological description of the data. We then use IBIS as a Compton telescope in order to evaluate the polarization properties of the sources above 300 keV. A high-energy component is detected during the HIMS and SIMS of MAXI J1535-571, the LHS of MAXI J1820+070 and the LHS of MAXI J1348-630. The components detected in MAXI J1820+070 and MAXI J1348-630 are polarized with a polarization fraction of 26 +/- 9° and > 56 % in the 300-1000 keV, respectively. With no polarization information for MAXI J1535-571, the component detected could either come from the jets or the corona. In the case of MAXI J1820+070, the extrapolation of the synchrotron spectrum measured in the infrared indicates that the component is likely due to a non-thermal distribution of electrons from a hybrid corona. For MAXI J1348-630, the high fraction of polarization points towards a jets origin, however, we cannot formally conclude without any infrared data giving information on the optically thin part of the synchrotron spectrum.
