Candidates
Our Milky Way galaxy contains several stellar-mass Black Hole Candidates (BHCs) which are closer to us than the supermassive black hole in the Galactic center region. These candidates are all members of X-ray binary systems in which the compact object draws matter from its partner via an accretion disk. The probable black holes in these pairs range from three to more than a dozen solar masses.
| Name | BHC Mass (solar masses) | Companion Mass (solar masses) | Orbital period (days) | Distance from Earth (light years) | Location |
|---|---|---|---|---|---|
| A0620-00/V616 Mon | 11 ± 2 | 2.6–2.8 | 0.33 | about 3500 | 06:22:44 -00:20:45 |
| GRO J1655-40/V1033 Sco | 6.3 ± 0.3 | 2.6–2.8 | 2.8 | 5000−11000 | 16:54:00 -39:50:45 |
| XTE J1118+480/KV UMa | 6.8 ± 0.4 | 6−6.5 | 0.17 | 6200 | 11:18:11 +48:02:13 |
| Cyg X-1 | 11 ± 2 | ≥18 | 5.6 | 6000–8000 | 19:58:22 +35:12:06 |
| GRO J0422+32/V518 Per | 4 ± 1 | 1.1 | 0.21 | about 8500 | 04:21:43 +32:54:27 |
| GS 2000+25/QZ Vul | 7.5 ± 0.3 | 4.9–5.1 | 0.35 | about 8800 | 20:02:50 +25:14:11 |
| V404 Cyg | 12 ± 2 | 6.0 | 6.5 | about 10000 | 20:24:04 +33:52:03 |
| GX 339-4/V821 Ara | 5–6 | 1.75 | about 15000 | 17:02:50 -48:47:23 | |
| GRS 1124-683/GU Mus | 7.0 ± 0.6 | 0.43 | about 17000 | 11:26:27 -68:40:32 | |
| XTE J1550-564/V381 Nor | 9.6 ± 1.2 | 6.0–7.5 | 1.5 | about 17000 | 15:50:59 -56:28:36 |
| 4U 1543-475/IL Lupi | 9.4 ± 1.0 | 0.25 | 1.1 | about 24000 | 15:47:09 -47:40:10 |
| XTE J1819-254/V4641 Sgr | 7.1 ± 0.3 | 5–8 | 2.82 | 24000 – 40000 | 18:19:22 -25:24:25 |
| GRS 1915+105/V1487 Aql | 14 ± 4.0 | ~1 | 33.5 | about 40000 | 19:15;12 +10:56:44 |
| XTE J1650-500 | 9.7 ± 1.6 | . | 0.32 | 16:50:01 -49:57:45 |
Read more about this topic: Stellar Black Hole
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