新发现:“怪兽级”神秘天体 宇宙“任意门”?怪异电波环?
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图 : NASA
天文学家近期于银河系和 16
万光年外的的大麦哲伦星系(LMC)间,探测到一个神秘、怪异的巨型环状天体。主要研究人之一的澳洲西雪梨大学(Western Sydney
University)天文学家菲利波维奇(Miroslav
Filipovic)指出,现阶段最可能的解释,该天体应为大麦哲伦星系边缘因爆发形成的“怪兽级”超新星残骸。
澳洲平方公里阵“探路者”电波望远镜(ASKAP)日前探测到代号为 J0624–6948
的天体。西雪梨大学天文学家菲利波维奇指出,该天体的形状几乎是完美的圆环形,研究团队原先认为又是一个“怪异电波环”(Odd Radio
Circles),截至 2020 年 6 月,天文学家已观测到 5 个这类型圆环状,边缘明亮的天体。
研究人员表示,再进一步观测后,该神秘天体和其他 ORC
不同:它的射频频谱(radio-spectrum)指数较平、中心没有一个可能是宿主的星系、所在位置和“体积大太多”。
菲利波维奇研判,最可能的解释是,大麦哲伦星系边缘发生两颗恆星绕行的 Ia
超新星爆炸情况,其因高温喷发所形成之残骸飞溅到一旁地带。
研究团队暂时将该天体命名为“怪兽级”超新星残骸,并估计超新星事件可能发生在距今 2,200 年~ 7,100 年前。
有网友笑称,这可能是卡通人物《多拉ㄟ梦》放在太空中的“任意门”,可让星际旅者在太空中任意穿梭。
天文学家近期探测到一个神秘、怪异的巨型环状天体,疑似为大麦哲伦星系边缘因爆发形成的“怪物级”超新星残骸。(图为超新星残骸) 图:截自推特@CSIRO_ATNF
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