MOMO VI：2015-2022年耀变体OJ 287的多频射电变率，预测的2021年耀斑活动的缺失，以及2016/2017年爆发的新二元解释
MOMO VI: Multifrequency radio variability of the blazar OJ 287 from 2015-2022, absence of predicted 2021 precursor-flare activity, and a new binary interpretation of the 2016/2017 outburst
摘要：
根据我们专门的斯威夫特监测计划，MOMO，OJ 287是X射线-紫外-光学制度中监测最好的耀变体之一。在这里，我们报告了2015年至2022年期间对OJ 287进行的密集多频（1.4- 44 GHz）无线电监测的结果，涵盖了广泛的活动状态。费米伽马射线观测被添加。我们详细描述了射电流量和光谱变化，包括DCF和其他变化分析，并讨论了它与多波长发射的联系。发现无线电和光-紫外线通量的深度衰减每1- 2年发生一次。此外，它表明，OJ 287的二元超大质量黑洞（SMBH）模型预测的热韧致辐射的前体耀斑是缺席的。然后，我们将重点关注我们最初用Swift发现的2016/2017年非热爆发的性质。我们将其解释为OJ 287着名的光学双峰爆发中的最新一次，有利于不需要高度旋进的次级SMBH的二元场景。
英文摘要：
Based on our dedicated Swift monitoring program, MOMO, OJ 287 is one of the best-monitored blazars in the X-ray--UV--optical regime. Here, we report results from our accompanying, dense, multi-frequency (1.4--44 GHz) radio monitoring of OJ 287 between 2015 and 2022 covering a broad range of activity states. Fermi gamma-ray observations are added. We characterize the radio flux and spectral variability in detail, including DCF and other variability analyses, and discuss its connection with the multiwavelength emission. Deep fades of radio and optical--UV fluxes are found to occur every 1--2 years. Further, it is shown that a precursor flare of thermal bremsstrahlung predicted by one of the binary supermassive black hole (SMBH) models of OJ 287 was absent. We then focus on the nature of the extraordinary, nonthermal 2016/2017 outburst that we initially discovered with Swift. We interpret it as the latest of the famous optical double-peaked outbursts of OJ 287, favoring binary scenarios that do not require a highly precessing secondary SMBH.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
