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Vela Jr.:超新星喷发团块与超新星遗骸的互动
Vela Jr.: Ejecta-Clump Interaction in the Vela Supernova Remnant

DOI: 10.12677/AAS.2013.12005, PP. 32-37

Keywords: 星际介质(RX J0852-4622, Vela Jr.);超新星遗骸(Vela Jr., Vela SNR, SN1572);流体力学;不稳定性;冲击波
ISM (RX J0852.0-4622
, Vela Jr.), Supernova Remnants (Vela Jr., Vela SNR, SN1572), Hydrodynamics, Instabilities, Shock Waves

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Abstract:

重迭在船帆座超新星遗骸(Vela supernova remnant)视线上的ROSAT X射线源RX J0852.0-4622,或称Vela Jr.,因其在1.3千电子伏的波段上呈现圆壳外观和检测出44Tiγ射线衰变线所以被认为是新发现的年轻超新星遗骸。然而,观测证据指出Vela Jr.应属于船帆座超新星遗骸的一部份而非独立的物体。二维气体动力学模拟显示,超新星快速的高密度喷发气体物(子弹)可以影响遗骸的外围,产生类似于Vela Jr.的圆环结构。估计Vela Jr.的能量为<0.3 × 1049 erg,相当于1700 km/s<~0.1M的超新星喷发物所注入的动能。我们认为子弹生成最有可能的机制是镍泡效应(nickel bubble effect)。我们预测子弹应该产生辐射,而船帆座超新星遗骸在低X射线亮度的波段上也应存在其它类似的结构。
The ROSAT source RX J0852.0-4622, or Vela Jr., superposed on the Vela supernova remnant, has been identified as a separate young supernova remnant based on its shell-like appearance in X-ray > 1.3 keV and on its detection as a source of the

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