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arXiv 2004.11884astro-ph.HE
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PSRJ 2032+4127在2017年近星过境期间的多波长观测

Multi-wavelength observations of PSRJ 2032+4127 during the 2017 periastron passage

Maria Chernyakova, Denys Malyshev, Pere Blay, Brian van Soelen, Sergey Tsygankov

摘要:

PSRJ 2032+4127是第二个被证实有年轻射电脉冲星环绕Be星的伽玛射线双星。脉冲星风与伴星质量外流的相互作用导致从射电到TeV能量的宽带辐射。在本文中,我们介绍了使用北欧光学望远镜对2017年近星点通道进行光学监测的结果。这些观测得到了X射线(Swift/XRT,NuSTAR)和GeV(Fermi/LAT)监测的补充。联合分析的Halalpha线和宽带(X射线TeV)的光谱形状的参数的演变,使我们能够提出一个模型,将所观察到的发射脉冲星和Be-星风的相互作用的假设下的倾斜盘的几何形状。我们的模型允许观察到的通量和光谱演化的系统,以自洽的方式来解释。

英文摘要:

PSRJ 2032+4127 is only the second known gamma-ray binary where it is confirmed that a young radio pulsar is in orbit around a Be-star. The interaction of the pulsar wind with the mass outflow from the companion leads to broad band emission from radio up to TeV energies. In the current paper we present results of optical monitoring of the 2017 periastron passage with the Nordic Optical Telescope. These observations are complemented by X-ray (Swift/XRT, NuSTAR) and GeV (Fermi/LAT) monitoring. Joint analysis of the evolution of the parameters of the Halpha line and the broadband (X-ray to TeV) spectral shape allows us to propose a model linking the observed emission to the interaction of the pulsar and Be-star winds under the assumption of the inclined disc geometry. Our model allows the observed flux and spectral evolution of the system to be explained in a self-consistent way.

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