Random triples
| Subject | Object |
|---|---|
| gptkb:Centaurus_X-30 | observed during studies |
| gptkb:Cygnus_X-1 | frequent |
| gptkb:Centaurus_X-19 | can occur sporadically |
| gptkb:Centaurus_X-13 | characterized by sudden increases in brightness |
| gptkb:Centaurus_X-31 | frequent outbursts observed |
| gptkb:Centaurus_X-9 | frequent outbursts observed |