9 lines
678 B
Markdown
9 lines
678 B
Markdown
---
|
|
name: Cygnus X-1
|
|
constellation: Cyg
|
|
created_by: editor.cs
|
|
created_date: 2023-11-05 17:13:05.198576
|
|
updated_by: editor.cs
|
|
updated_date: 2023-11-05 17:13:05.198579
|
|
---
|
|
A binary star near η Cygni. It is a variable source of X-ray radiation. One component is visible, the other is not visible, but X-rays are emitted from its surroundings. The visible star is a luminous giant, the invisible component is likely a collapsed old star with a large mass - a black hole with a radius of only 10 km, which draws a huge amount of gas from the luminous giant (with a radius of 10 million km) and emits extremely intense X-ray radiation before it reaches its boundary, emitting X-rays. |