arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0802.3556astro-ph
收藏

超大质量黑洞并合的红外余辉

The Infrared Afterglow of Supermassive Black Hole Mergers

Jeremy D. Schnittman, Julian H. Krolik

摘要:

我们模拟了在中心黑洞合并后的一段时间内环双星吸积盘的光谱和光变曲线。这种合并的最直接的影响是由于合并时释放的引力波能量和线性动量通量导致的盘外部区域的能量耗散。这会扰动盘中的气体,然后在冷却的时间尺度上辐射出耗散的能量,当总质量为M~10^8 M_sun的黑洞时,会产生数万年的特征红外信号。基于一个简单的宇宙学合并模型,在这个模型中,一个典型的超大质量黑洞在其一生中经历了几次主要的合并,我们预测今天应该可以观测到大约10^4-10^5个这样的红外源,并讨论了用SWIRE/XMM-LSS/XBootes和COSMOS等多波长巡天来识别它们的可能性。

英文摘要:

We model the spectra and light curves of circumbinary accretion disks during the time after the central black holes merge. The most immediate effect of this merger is the dissipation of energy in the outer regions of the disk due to the gravitational wave energy and linear momentum flux released at merger. This has the effect of perturbing the gas in the disk, which then radiates the dissipated energy over a cooling timescale, giving a characteristic infrared signal for tens of thousands of years when the total black hole mass is M~10^8 M_sun. On the basis of a simple cosmological merger model in which a typical supermassive black hole undergoes a few major mergers during its lifetime, we predict that ~10^4-10^5 of these IR sources should be observable today and discuss the possibility of identifying them with multi-wavelength surveys such as SWIRE/XMM-LSS/XBootes and COSMOS.

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。

↑