arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1209.5872astro-ph.HE
收藏

IGR J16418-4532的快速监控

Swift monitoring of IGR J16418-4532

P. Esposito, P. Romano, V. Mangano, L. Ducci, S. Vercellone

摘要:

我们报告了候选超巨星快X射线瞬变(SFXT)IGR J16418-4532的Swift观测结果,它的轨道周期约为3.7 d。我们的监测,共约43千公里,跨越三个轨道,代表了最激烈的和完整的采样沿轨道周期的光变曲线的这个来源。如果假设轨道是圆形的,那么这个源的X射线辐射可以用蓝超巨星的球对称云团风的吸积来解释,蓝超巨星是由不同质量的团块组成的,质量从~5x10^16 g到10^21 g不等。

英文摘要:

We report on the Swift observations of the candidate supergiant fast X-ray transient (SFXT) IGR J16418-4532, which has an orbital period of ~3.7 d. Our monitoring, for a total of ~43 ks, spans over three orbits and represents the most intense and complete sampling along the orbital period of the light curve of this source. If one assumes a circular orbit, the X-ray emission from this source can be explained by accretion from a spherically symmetric clumpy wind from a blue supergiant, composed of clumps with different masses, ranging from ~5x10^16 g to 10^21g.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑