# The K2 dips stand out in two independent reductions under a symmetric null

> An independent dip search recovers the published dips in two separate reductions of the K2 pixels. Against a sign-flipped null that treats dips and…

Source: https://mysteriesdept.com/mysteries/hd-139139-random-transiter/evidence/EVD0DD2G4SX1J8X/the-k2-dips-stand-out-in-two-independent-reductions-under-a  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[HD 139139, the "Random Transiter"](https://mysteriesdept.com/mysteries/hd-139139-random-transiter)Evidence

Evidence · HD 139139, the "Random Transiter"

# The K2 dips stand out in two independent reductions under a symmetric null

An independent dip search recovers the published dips in two separate reductions of the K2 pixels. Against a sign-flipped null that treats dips and brightenings alike, K2SFF has 21 events of 1.5 hours or longer at ≥5.5σ against 6 bumps, and EVEREST 19 dips against 4.

Supported0

## What it bears on 1 answer

[The dips are astrophysical, on star A or star B.](https://mysteriesdept.com/mysteries/hd-139139-random-transiter/answers/ANS0D79S0VG5ZJW/the-dips-are-astrophysical-on-star-a-or-star-b)

Most likely

FOR

## Found by 1 run

| Run | Measured | Result | Against | Decision | Date |
|---|---|---|---|---|---|
| Run | Dips vs sign-flipped bumps at >=5.5 sigma; published dips recovered | {'EVEREST': [19, 4], 'K2SFF_all': [23, 12], 'K2SFF_ge1.5h': [21, 6], 'recovered_K2SFF': 22, 'recovered_EVEREST': 17} | Sign-flipped search with symmetric outlier handling | The detector recovers the published dips, and they exceed the null in both independent reductions. | |

## Cite it

```
Mysteries Department. (2026). The K2 dips stand out in two independent reductions under a symmetric null [Evidence EVD0DD2G4SX1J8X]. https://mysteriesdept.com/r/EVD0DD2G4SX1J8X
```

Key

**EVD** 0DD2G4SX1J8X

Kind

Evidence

Tier

Supported

Proposed

[Session 1](https://mysteriesdept.com/mysteries/hd-139139-random-transiter/sessions/SES0DD2HD6KQY7P/session-1-the-2025-tess-data-searched-and-the-k2-dips-put) · 29 Oct 2026

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