NGC 4151 is an intermediate spiral Seyfert galaxy with weak inner ring structure located 15.8 megaparsecs (52 million light-years) from Earth [4] in the constellation Canes Venatici. The galaxy was first mentioned by William Herschel on March 17, 1787; it was one of the six Seyfert galaxies described in the paper [ 5 ] which defined the term.

NGC 4151是核心中擁有快速成長中的 超大質量黑洞 星系中距離地球最近的其中一個 [5]。 天文學家推測NGC 4151的核心可能存在環繞質量中心旋轉中的 雙黑洞，質量分別為4000萬和1000萬倍太陽質量，軌道週期15.8年 [6]。 不過，該系統是否存在仍持續爭論中。 部分天文學家就NGC 4151的外觀，稱呼它為《索倫之眼》 [7]。 天文學家以 歐洲太空總署 的 XMM-牛顿卫星 觀測資料發現了來自NGC 4151的長期X射線輻射訊號。 當核心中的黑洞發出X射線閃焰，其外圍的吸 …

NGC 4151 is a spiral galaxy with an actively growing supermassive black hole at its center. This composite image of NGC 4151 contains X-rays from Chandra (blue), optical data (yellow), and radio emission (red). The structure has been dubbed "The Eye of Sauron" by astronomers due to its resemblance to the character in "The Lord of the Rings" movies.

2018年10月17日 · This image of galaxy NGC 4151, captured by the Hubble Space Telescope’s Wide Field Camera 3, shows compass arrows and labels for reference. The north and east compass arrows show the orientation of the image on the sky.

2011年3月11日 · NGC 4151 is located about 43 million light-years away from Earth and is one of the nearest galaxies that contains an actively growing black hole. Because of this proximity, it offers one of the...

2024年1月1日 · NGC 4151 is an intriguing spiral galaxy, discovered by William Herschel in 1787. Modern images show an intense central core surrounded by an oval ring of stars, dust, and gas. Red splotches...

2023年1月15日 · We report the results of long-term reverberation mapping (RM) campaigns of the nearby active galactic nuclei (AGN) NGC 4151, spanning from 1994 to 2022, based on archived observations of the FAST...

2019年9月1日 · NGC 4151 is a Seyfert galaxy and hosts one of the brightest active galactic nuclei (AGN) known at X-ray wavelengths. The supermassive black hole lying at the centre of NGC 4151 has a mass of about 50 million solar masses.

The galaxy NGC 4151 is one of the closest active galaxies to our own Milky Way. Like the Milky Way, NGC 4151 is also a spiral galaxy , but unlike the Milky Way, NGC 4151 hosts a supermassive black hole near the galactic center, a black hole that is actively swallowing about an earth's mass of nearby gas and dust every minute from a torus of ...

X-ray image of the central region of the galaxy NGC 4151. The Chandra image shows a massive cloud of hot gas in the center of NGC 4151. The brightest regions in the cloud correspond to wisps that were previously observed in visible light by the Hubble Space Telescope.