# Magnetic field and ISM in the local Galactic disc

## TL;DR

This paper develops a method to analyze the Galactic magnetic field and interstellar medium by correlating various all-sky radio and gas maps, providing detailed local magnetic field maps.

## Contribution

A new hybrid method is introduced to estimate magnetic strength, orientation, and gas densities from archival all-sky data.

## Key findings

- All-sky maps of local magnetic field strength are produced.
- The local magnetic field orientation is characterized in detail.
- The method reveals correlations between magnetic fields and interstellar gas.

## Abstract

Correlation analysis is obtained among Faraday rotation measure, HI column density, thermal and synchrotron radio brightness using archival all-sky maps of the Galaxy. A method is presented to calculate the magnetic strength and its line-of-sight (LOS) component, volume gas densities, effective LOS depth, effective scale height of the disk) from these data in a hybrid way. Applying the method to archival data, all-sky maps of the local magnetic field strength and its parallel component are obtained, which reveal details of local field orientation.