SDSS J1430+2303
SDSS J1430+2303 (or SDSS J143016.05+230344.4) is a galaxy with an active galactic nucleus that is undergoing a periodic variability that is decreasing with time. One explanation is that it is a binary black hole close to the point of merger which could be observed before the end of 2022.[1][2]
| SDSS J1430+2303 | |
|---|---|
| Observation data (J2000 epoch) | |
| Constellation | Boötes |
| Right ascension | 14h 30m 16.04s |
| Declination | +23° 03′ 44.5″ |
| Redshift | 0.08105 |
| Characteristics | |
| Type | Sy |
| Other designations | |
| PGC 214276, SDSS J143016.05+230344.4, 2MASS J14301603+2303445 | |
Galaxy
SDSS J1430+2303 is a Seyfert 1 galaxy. it is an elliptical galaxy with a mass of 150 billion solar masses.[2]
SDSS J1430+2303 is 1.05 × 1022 km from Earth (or 1.11 billion light years, 339 Mpc) with a redshift of 0.08105.[2]
It has an Hα line emission, blue-shifted by 2400 km/s, relative to other emission lines from the galaxy.[2]
An estimate of a supermassive black hole at its center is 40 million solar masses.[2]
References
- Clery, Daniel (1 February 2022). "Crash of the titans: imminent merger of giant black holes predicted". www.science.org. 375 (6580).
- Jiang, Ning; Yang, Huan; Wang, Tinggui; Zhu, Jiazheng; Lyu, Zhenwei; Dou, Liming; Wang, Yibo; Wang, Jianguo; Pan, Zhen; Liu, Hui; Shu, Xinwen; Zheng, Zhenya (27 January 2022). "Tick-Tock: The Imminent Merger of a Supermassive Black Hole Binary". arXiv:2201.11633.
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