论文标题
关于$γ$ ray巨大的窄线seyfert 1 pks 1502+036
On the Hadronic Origin of High Energy Emission of $γ$-ray Loud Narrow-Line Seyfert 1 PKS 1502+036
论文作者
论文摘要
从X射线到$γ$ -Ray乐队的无线电狭窄线1（RL-NLS1）的辐射机制仍然是一个悬而未决的问题。尽管已采用了Leptonic模型来解释光谱能量分布（SED），但HADRONIC过程可能可能解释了一些$γ$ - 摩尔大声的窄线Seyfert 1（NLS1）的高能辐射。我们研究了这样的RL-NLS1，PKS 1502+036，比较了Leptonic模型预测的理论SED和Lepto-Hadronic模型与观察到的模型。对于耐药过程，我们考虑了质子同步子辐射和质子 - 光子相互作用（包括伯特 - 赫特勒过程和光popion过程），包括这些过程引发的电磁级联反应中产生的对发射。我们的结果表明，Leptonic模型可以再现此源的SED，其中X射线X射线至$γ$ -Ray辐射可以解释为逆Compton（IC）散射。另一方面，质子同步辐射还可以解释SED的高能量成分，尽管需要极端参数。我们还证明了$Pγ$交互以及级联进程无法解释SED。我们的结果表明，Leptonic起源对PKS 1502+036的多波长发射有利。
The radiation mechanism of Radio-Loud Narrow-Line Seyfert 1 (RL-NLS1) from X-ray to $γ$-ray bands remains an open question. While the leptonic model has been employed to explain the spectral energy distribution (SED), the hadronic process may potentially account for the high energy radiation of some $γ$-ray loud Narrow-Line Seyfert 1 (NLS1) as well. We study one of such RL-NLS1, PKS 1502+036, comparing the theoretical SEDs predicted by the leptonic model and the lepto-hadronic model to the observed one. For the hadronic processes, we take into account the proton synchrotron radiation and proton-photon interactions (including the Bethe-Heitler process and the photopion process) including the emission of pairs generated in the electromagnetic cascade initiated by these processes. Our results show that the leptonic model can reproduce the SED of this source, in which the X-ray to $γ$-ray radiation can be interpreted as the inverse Compton (IC) scattering. On the other hand, the proton synchrotron radiation can also explain the high energy component of SED although extreme parameters are needed. We also demonstrate that the $pγ$ interactions as well as the cascade process cannot explain SED. Our results imply that a leptonic origin is favored for the multi-wavelength emission of PKS 1502+036.
