论文标题
深色能量对黑洞阴影的影响
Influence of quintessence dark energy on the shadow of black hole
论文作者
论文摘要
我们研究了典型的深色能量对黑洞阴影的影响，并被各种增生曲线所包围。对于薄磁盘积聚，黑洞的图像包括黑暗区域和明亮的区域，包括直接发射，透镜环和光子环。尽管它们的细节取决于发射的形式，但总体上，直接发射对于观察到的黑洞的亮度起着重要作用，而镜头环则产生了很小的贡献，而光子环则可以忽略不计。宇宙学视野的存在在阴影中也起着重要作用，因为外部通信领域的观察者在宇宙学的附近。对于球形对称的积聚，考虑了静态和插入问题。我们发现，光子球的位置对于静态和插入积分都是相同的。然而，由于插入运动的多普勒效应，观察到的插入积聚的图像的特定强度比静态积聚更暗。
We investigate the effects of quintessence dark energy on the shadows of black hole, surrounded by various profiles of accretions. For the thin disk accretion, the images of the black hole comprises the dark region and bright region, including direct emission, lensing rings and photon rings. Although their details depend on the form of the emission, generically, the direct emission plays a major role for the observed brightness of the black hole, while the lensing ring makes a small contribution and photon ring makes a negligible contribution. The existence of cosmological horizon also plays an important role in the shadows, since the observer in the domain of outer communications is nearby the cosmological horizon. For the spherically symmetric accretion, the static and infalling matters are considered. We find that the positions of photon spheres are the same for both static and infalling accretions. However, the observed specific intensity of the image for the infalling accretion is darker than the static accretion, due to the Doppler effect of the infalling movement.
