标题： COMPTEL MeV 观测到的 TeV 源：马卡良 421 和马卡良 501 显示英文标题

标题： COMPTEL MeV Observations of the TeV Sources Markarian 421 and Markarian 501

摘要： 搭载康普顿γ射线天文台（CGRO）的COMPTEL实验在其1991年4月开始执行任务至1998年12月期间多次观测了显著的TeV耀变星Mkn 421和Mkn 501。 本文报告了主要基于时间平均数据（CGRO周期）的首个COMPTEL结果。 截至第六个周期结束时，未发现这两个源的证据。 然而，第七周期全部10-30 MeV数据的总和显示出一个弱信号（3.2倍标准差检测）的MeV源，其位置与Mkn 421一致。 在第七周期期间，Mkn 421在TeV能量范围内表现出相当活跃的状态。 由于该天区没有其他已知的γ射线源，我们认为Mkn 421是此γ射线发射最有可能的对应体。 但是，COMPTEL无法证明这种关联。 显示英文摘要

摘要： The COMPTEL experiment aboard the COMPTON Gamma-Ray Observatory (CGRO) has observed the prominent TeV-blazars Mkn 421 and Mkn 501 many times between the start of its mission in April '91 and December '98. This paper reports first COMPTEL results from mainly time-averaged (CGRO Cycles) data. No evidence for both sources is found up to the end Cycle VI. However, the sum of all 10-30 MeV Cycle VII data shows a weak (3.2 sigma detection) MeV-source being positionally consistent with Mkn 421. During Cycle VII Mkn 421 was rather active at TeV-energies. Due to the lack of other known Gamma-ray sources in this sky region, we consider Mkn 421 as the most likely counterpart for this Gamma-ray emission. However, its connection cannot be proven by COMPTEL.