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arXiv 1111.2388astro-ph.HE
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黑洞微类星体H1743-322的距离、倾角和自旋

The Distance, Inclination, and Spin of the Black Hole Microquasar H1743-322

James F. Steiner, Jeffrey E. McClintock, Mark J. Reid

摘要:

在2003年的爆发中,黑洞H1743-322产生了双面射电和X射线喷流。应用一个简单的和对称的运动学模型,这些喷流的轨迹,我们确定的源距离,8.5 \pm 0.8千秒差距,和喷流的倾角,75 \pm 3度。使用这些值,我们估计自旋的黑洞拟合其RXTE光谱,在2003年爆发期间获得的标准相对论吸积盘模型。对于它的自旋,我们发现a*=0.2 \pm 0.3(68%限值); -0.3 < a* < 0.7,置信度为90%。我们强烈反对自旋的极端值:在99.7%的置信度下,a* < 0.92。H1743-322是第三个已知的微类星体(在A0620-00和XTE J1550-564之后),它显示出大规模的弹道喷流,并具有中等的自旋值。我们的结果依赖于黑洞质量的经验分布,考虑了所有已知的测量误差来源。

英文摘要:

During its 2003 outburst, the black-hole X-ray transient H1743-322 produced two-sided radio and X-ray jets. Applying a simple and symmetric kinematic model to the trajectories of these jets, we determine the source distance, 8.5 \pm 0.8 kpc, and the inclination angle of the jets, 75 \pm 3 degrees. Using these values, we estimate the spin of the black hole by fitting its RXTE spectra, obtained during the 2003 outburst, to a standard relativistic accretion-disk model. For its spin, we find a*=0.2 \pm 0.3 (68% limits); -0.3 < a* < 0.7 at 90% confidence. We rule strongly against an extreme value of spin: a* < 0.92 at 99.7% confidence. H1743-322 is the third known microquasar (after A0620-00 and XTE J1550-564) that displays large-scale ballistic jets and has a moderate value of spin. Our result, which depends on an empirical distribution of black hole masses, takes into account all known sources of measurement error.

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。

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