SMSS J215728.21-360215.1, commonly known as J2157-3602, is one of the fastest growing black holes and one of the most powerful quasars known to exist as of 2021. The quasar is located at redshift 4.75, [1] corresponding to a comoving distance of 2.5 × 1010 ly from Earth and to a light-travel distance of 1.25 × 1010 ly.

j2157-3602，全称为 smss j215728.21-360215.1 ，俗称布洛克的 黑洞 ，是已知增长速度最快的黑洞和最亮的 类星体 。 该类星体距离地球120亿 光年 ，最近被 澳大利亚国立大学 的Siding Spring天文台通过SkyMapper望远镜发现。

2020年6月30日 · SMSS J2157 is the most luminous known quasar, with a 3000 Å luminosity of (4.7 ± 0.5) × 10 47 erg s −1 and an estimated bolometric luminosity of 1.6 × 10 48 erg s −1, yet its Eddington ratio is only ∼0.4. Thus, the high luminosity of this quasar is a consequence of its extremely large BH – one of the most massive BHs at z > 4.

2023年2月21日 · We develop an accretion disc (AD) fitting method, utilising thin and slim disc models and Bayesian inference with the Markov-Chain Monte-Carlo approach, testing it on the most luminous known quasar, SMSS J215728.21-360215.1, at redshift z = 4.692.

The photometric and astrometric information from SMSS, WISE, and Gaia has enabled the discovery of the most UV-luminous object currently known: the quasar SMSSJ215728.21–360215.1 (hereafter, SMSSJ2157; Wolf et al. 2018, 2020). Based on detailed follow-up, we now report on the BH mass and Eddington ratio …

2020年5月14日 · Abstract: From near-infrared spectroscopic measurements of the MgII emission line doublet, we estimate the black hole (BH) mass of the quasar, SMSS J215728.21-360215.1, as being (3.4 +/- 0.6) x 10^10 M_sun and refine the redshift of the quasar to be z=4.692. SMSS J2157 is the most luminous known quasar, yet its Eddington ratio is only ~0.4.

SMSS J2157 is the most luminous known quasar, with a 3000 Å luminosity of (4.7 ± 0.5) × 10 47 erg s-1 and an estimated bolometric luminosity of 1.6 × 10 48 erg s-1, yet its Eddington ratio is only ~0.4. Thus, the high luminosity of this quasar is a consequence of its extremely large BH - one of the most massive BHs at z > 4.

2023年4月9日 · 澳大利亚国立大学的一个研究团队发现了迄今为止增长速度最快的黑洞，它每天吞噬掉的物质质量相当于一个太阳。 这个黑洞名为J2157，位于SMSS J215728.21-360215.1的星系中心，距离地球大约120亿光年。 早在2018年时，该研究团队就观测到了它，这是一个十分古老的黑洞，在宇宙诞生12亿年后它就已经存在了，也就是说J2157的年龄有126亿岁了。 不仅如此，它几乎是早期宇宙最大的黑洞，相当于200亿倍太阳质量。 研究团队利用甚大阵列望远镜 …

SMSS J2157 is the most luminous known quasar, with a 3000 angstrom luminosity of (4.7 +/- 0.5) x 10(47) erg s(-1) and an estimated bolometric luminosity of 1.6 x 10(48) erg s(-1), yet its Eddington ratio is only similar to 0.4. Thus, the high luminosity of this quasar is a consequence of its extremely large BH - one of the most massive BHs at z ...

2024年3月3日 · In the vast expanse of our universe, SMSS J2157-3602, commonly known as J2157, has emerged as a celestial marvel, captivating astronomers with its extraordinary features. This black hole, discovered in 2018 and located approximately 12.5 billion light-years away, has earned its place as one of the fastest-growing and most powerful quasars ever ...