IRAS 13224-3809

IRAS 13224-3809 is a highly active and fluctuating Seyfert 1 galaxy in the constellation Centaurus[2] about 1 billion light-years from Earth.[3][5][6] The galaxy is notable due to its centrally-located supermassive black hole that is closely studied by astronomers using x-ray astronomy, particularly X-ray reverberation echo mapping techniques, in an effort to better understand the inner workings, including mass and spin, of black holes.[3][5]

IRAS 13224-3809
Observation data (J2000[1] epoch)
ConstellationCentaurus[2]
Right ascension13h 25m 19.38s[1]
Declination−38° 24′ 52.61″[1]
Redshift0.06580 ± 0.00018
Distance1 billion light-years[3]
Apparent magnitude (V)13.80[4]
Other designations
2MASX J13251937-3824524; 2MASS J13251937-3824526; GSC 07787-00931; IRAS F13224-3809; 1RXS J132519.4-382445; WISE J132519.39-382452.5; Gaia DR2 6162481890199388928[1]

References
  1. Staff (20 January 2020). "2MASX J13251937-3824524 - Seyfert 1 Galaxy". SIMBAD. Retrieved 20 January 2020.
  2. Staff (2 August 2008). "Finding the constellation which contains given sky coordinates". DJM.cc. Retrieved 20 January 2020.
  3. Drake, Nadia (20 January 2020). "Astronomers just got a deep peek at a black hole - Using a technique akin to echolocation, scientists were able to map the region around a distant black hole's event horizon in unprecedented detail". National Geographic Society. Archived from the original on 20 January 2020. Retrieved 20 January 2020.
  4. "Search specification: IRAS 13224-3809". HyperLeda. Université Claude Bernard Lyon 1. Retrieved 23 February 2021.
  5. Alston, William N.; et al. (20 January 2020). "A dynamic black hole corona in an active galaxy through X-ray reverberation mapping". Nature Astronomy. 4 (6): 597–602. arXiv:2001.06454. Bibcode:2020NatAs...4..597A. doi:10.1038/s41550-019-1002-x. hdl:1721.1/129519. S2CID 210713866. Retrieved 20 January 2020.
  6. University of Southampton (20 January 2020). "Echoes of light help scientists map the behaviour of a black hole". Technology.org. Retrieved 20 January 2020.
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