NGC 4151 - Wikipedia
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.
NASA, JAXA XRISM Spots Iron Fingerprints in Nearby Active Galaxy
2024年5月8日 · NGC 4151 is a spiral galaxy around 43 million light-years away in the northern constellation Canes Venatici. The supermassive black hole at its center holds more than 20 million times the Sun’s mass. The galaxy is also active, which means its …
How to Weigh a Black Hole Using NASA’s Webb Space Telescope
2018年10月17日 · The spiral galaxy NGC 4151 has a bright, active core powered by a supermassive black hole. Webb will weigh the black hole by measuring the motions of stars at the galaxy’s center.
NGC 4151 - Astronomy Magazine
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.
XRISM Detects Iron in Accretion Disk around NGC 4151’s …
2024年5月8日 · XRISM’s Resolve instrument captured data from the center of NGC 4151. The resulting spectrum reveals the presence of iron in the peak around 6.5 keV and the dips around 7 keV, light thousands of times more energetic that what our eyes can see.
The Iron Grip of the Black Hole in NGC 4151
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 ...
NGC 4151 (Hubble Image) - Webb
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.
Ring of Fire - NASA
2011年12月27日 · This composite image shows the central region of the spiral galaxy NGC 4151. X-rays (blue) from the Chandra X-ray Observatory are combined with optical data (yellow) showing positively charged hydrogen (H II) from observations with the 1-meter Jacobus Kapteyn Telescope on La Palma.
X-ray ‘Echoes’ Map a Supermassive Black Hole’s Environs
2012年5月31日 · Astronomers using data from the European Space Agency’s XMM-Newton satellite have found a long-sought X-ray signal from NGC 4151, a galaxy that contains a supermassive black hole. When the black hole’s X-ray source flares, its accretion disk brightens about half an hour later.
One year into mission, XRISM reveals movements of cosmic …
2024年9月29日 · In addition to N132D, XRISM also investigated the environment surrounding a black hole within the spiral galaxy NGC 4151, which is located around 62 million light-years from Earth.