论文标题
PKS 1424+240：还有另一个伪装的Bl Lac对象作为可能的Icecube Neutrino源
PKS 1424+240: yet another masquerading BL Lac object as a possible IceCube neutrino source
论文作者
论文摘要
We show that the blazar PKS 1424+240, which has been recently associated by IceCube with a neutrino excess at the $3.3\,σ$ level together with three other sources, is similar to the first plausible non-stellar neutrino source, TXS 0506+056, in being also a masquerading BL Lac object, i.e., intrinsically a flat-spectrum radio quasar with hidden broad lines and a standard accretion 磁盘。我们指出，这两个来源具有其他属性，包括光谱能分布，高力量，PARSEC量表特性以及可能的无线电形态。我们推测，质子加载的喷气机的相对罕见的组合（可能是高兴奋源的典型代表）以及与它们相对较高的同步加速器峰值频率相关的有效粒子加速过程，可能有利于这两个来源中的中微子产生。 GB6 J1542+6129最近在Icecube协会列表中两次出现，似乎也属于这个稀有的Blazar子类，其中最多包括20 Fermi-4lac Blazars。
We show that the blazar PKS 1424+240, which has been recently associated by IceCube with a neutrino excess at the $3.3\,σ$ level together with three other sources, is similar to the first plausible non-stellar neutrino source, TXS 0506+056, in being also a masquerading BL Lac object, i.e., intrinsically a flat-spectrum radio quasar with hidden broad lines and a standard accretion disk. We point out that these two sources share other properties, including spectral energy distribution, high powers, parsec scale properties, and possibly radio morphology. We speculate that the relatively rare combination of proton-loaded jets, possibly typical of high-excitation sources, and efficient particle acceleration processes, related to their relatively high synchrotron peak frequencies, might favour neutrino production in these two sources. GB6 J1542+6129, which has also recently appeared twice in a list of IceCube associations, seems also to belong to this rare blazar sub-class, which includes at most ~ 20 Fermi-4LAC blazars.
