# Luminous X-ray binaries.

> No evidence yet: Luminous X-ray binaries.

Source: https://mysteriesdept.com/mysteries/fast-radio-bursts/answers/ANS0CVCMND603XR/luminous-x-ray-binaries  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Questions](https://mysteriesdept.com/questions)[Fast radio bursts and the origin of the one-off bursts](https://mysteriesdept.com/mysteries/fast-radio-bursts)[How do burst sources come to be in old star clusters and dead galaxies?](https://mysteriesdept.com/mysteries/fast-radio-bursts/questions/QST0CVCMC4A44GR/how-do-burst-sources-come-to-be-in-old-star-clusters-and)Answer

Answer · Fast radio bursts and the origin of the one-off bursts

# Luminous X-ray binaries.

Luminous X-ray binaries.

**No evidence yet** Answers **1** questionPublished0

## Where it stands

**No evidence yet** Its tests haven't settled it: no evidence yet.

## What it predicts

- X-ray counterparts at the positions of the nearest sources.

## What would rule it out

- Deep X-ray limits below binary luminosities for the nearby old-host sources.

## The questions it answers

[How do burst sources come to be in old star clusters and dead galaxies?](https://mysteriesdept.com/mysteries/fast-radio-bursts/questions/QST0CVCMC4A44GR/how-do-burst-sources-come-to-be-in-old-star-clusters-and)

Part of [What produces most of the one-off fast radio bursts?](https://mysteriesdept.com/mysteries/fast-radio-bursts/questions/QST0CVCMB5213XT/what-produces-most-of-the-one-off-fast-radio-bursts)

Open3 answers, none ahead

## Cite it

```
Mysteries Department. (2026). Luminous X-ray binaries. [Answer ANS0CVCMND603XR]. https://mysteriesdept.com/r/ANS0CVCMND603XR
```

Key

**ANS** 0CVCMND603XR

Kind

Answer · hypothesis

Origin

Published

Version

1

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