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首页> 外文期刊>The Astrophysical Journal. Letters >A blazar-like radio flare in MRK 231
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A blazar-like radio flare in MRK 231

机译:MRK 231中的类似大爆炸的无线电弹

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Radio monitoring of the broad absorption line quasar (BALQSO) Mrk 231 from 13.9 GHz to 17.6 GHz detected a strong flat spectrum flare. Even though BALQSOs are typically weak radio sources, the 17.6 GHz flux density doubled in ≈150 days, from ≈135 mJy to ≈270 mJy. It is demonstrated that the elapsed rise time in the quasar rest frame and the relative magnitude of the flare is typical of some of the stronger flares in blazars that are usually associated with the ejection of discrete components on parsec scales. The decay of a similar flare was found in a previous monitoring campaign at 22 GHz. We conclude that these flares are not rare. The implication is that Mrk 231 seems to be a quasar in which the physical mechanism that produces the broad absorption line wind is in tension with the emergence of a fledgling blazar.
机译:在13.9 GHz至17.6 GHz范围内对宽吸收线类星体(BALQSO)Mrk 231进行的无线电监测发现强烈的平坦频谱耀斑。即使BALQSO通常是较弱的无线电源,其17.6 GHz的通量密度在≈150天之内也翻了一番,从≈135mJy增至≈270mJy。事实证明,类星体静止帧中经过的上升时间和耀斑的相对大小是blazar中一些较强耀斑的典型特征,这些耀斑通常与不连续分量在parsec尺度上的喷射有关。在先前的22 GHz监视活动中发现了类似耀斑的衰减。我们得出结论,这些耀斑并不罕见。这意味着Mrk 231似乎是类星体,其中产生宽广的吸收线风的物理机制与刚起步的blazar的出现处于紧张状态。

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