标题： 大质量星团中的软γ射线重复暴来源 显示英文标题

标题： Soft Gamma-ray Repeaters in Clusters of Massive Stars

摘要： 对两个已知位置最精确的软伽马射线重复暴（SGRs）周围环境的红外观测表明，它们与大质量恒星的聚集体有关。ISO卫星的观测揭示了SGR 1806-20位于一个由巨大质量恒星组成的聚集体中，该聚集体仍被浓厚的气体和尘埃云所遮蔽。SGR 1900+14则位于一个类似的聚集体的边缘，这个聚集体最近才被发现隐藏在一对M5超巨星的光辉之中。 由于这些聚集体中的恒星在过去几年里在红外波段没有显示出显著的流量变化，这两个SGRs并未形成与大质量恒星的束缚双星系统。SGR 1806-20距离其母星团中心约0.4秒差距，而SGR 1900+14距离其母星团中心约0.8秒差距。 如果这些SGRs以典型的中子星逃逸速度（约300公里/秒）诞生，那么它们的年龄不会超过数个\(10^\{$^{3}$\}\)年。 我们提出，SGR 1806-20和SGR 1900+14是研究大质量恒星聚集体中强风产生的星际气泡内超新星爆炸演化的理想实验室。 显示英文摘要

摘要： Infrared observations of the environment of the two Soft Gamma-ray Repeaters (SGRs) with the best known locations on the sky show that they are associated to clusters of massive stars. Observations with ISO revealed that SGR 1806-20 is in a cluster of giant massive stars, still enshrouded in a dense cloud of gas and dust. SGR 1900+14 is at the edge of a similar cluster that was recently found hidden in the glare of a pair of M5 supergiant stars. Since none of the stars of these clusters has shown in the last years significant flux variations in the infrared, these two SGRs do not form bound binary systems with massive stars. SGR 1806-20 is at only ~ 0.4 pc, and SGR 1900+14 at ~ 0.8 pc from the centers of their parental star clusters. If these SGRs were born with typical neutron star runaway velocities of ~ 300 km/s, they are not older than a few 10$^{3}$ years. We propose that SGR 1806-20 and SGR 1900+14 are ideal laboratories to study the evolution of supernovae explosions inside interstellar bubbles produced by the strong winds that prevail in clusters of massive stars.