# The height dependence of temperature - velocity correlation in the solar photosphere

## TL;DR

This study investigates how the correlation between temperature and velocity varies with optical depth in the solar photosphere, revealing a maximum anticorrelation at a specific depth and examining magnetic effects.

## Contribution

It provides detailed measurements of temperature-velocity correlations across different depths and compares non-magnetic and magnetic regions in the solar photosphere.

## Key findings

- Maximum anticorrelation of -0.6 at log tau5 = -0.4 in non-magnetic areas
- Magnetic fields and oscillations influence correlation patterns
- Correlation varies with optical depth and magnetic activity

## Abstract

We derive correlation coefficients between temperature and line-of-sight velocity as a function of optical depth throughout the solar photosphere for the non-magnetic photosphere and a small area of enhanced magnetic activity. The maximum anticorrelation of about -0.6 between temperature and line-of-sight velocity in the non-magnetic photosphere occurs at log tau5 = -0.4. The magnetic field is another decorrelating factor along with 5-min oscillations and seeing.