# Episodic Torque-Luminosity Correlations and Anticorrelations of GX 1+4

## TL;DR

This study analyzes long-term X-ray flux and spin data of GX 1+4, revealing that the correlation between torque and luminosity shifts from positive to negative over a few hundred days.

## Contribution

It provides the first systematic analysis of time-dependent torque-luminosity correlations in GX 1+4 over an extended period.

## Key findings

- Correlation shifts from positive to negative over hundreds of days
- Long-term archival data reveals dynamic torque-luminosity relationship
- Highlights the variability in accretion processes in GX 1+4

## Abstract

We analyse archival CGRO-BATSE X-ray flux and spin frequency measurements of GX 1+4 over a time span of 3000 days. We systematically search for time dependent variations of torque luminosity correlation. Our preliminary results indicate that the correlation shifts from being positive to negative on time scales of few 100 days.