# Effects of magnetic fields in white dwarfs

## TL;DR

This paper investigates the impact of strong magnetic fields on white dwarf properties, demonstrating that such fields can lead to white dwarfs exceeding the Chandrasekhar limit, with implications for supernova progenitors.

## Contribution

The study uses a fully general relativistic approach to show that white dwarfs with strong magnetic fields can have masses above 1.4 solar masses, up to about 2.0 solar masses.

## Key findings

- White dwarfs with strong magnetic fields can reach masses around 2.0 M_sun.
- Magnetic fields significantly alter the mass-radius relationship of white dwarfs.
- Results support the possibility of super-Chandrasekhar white dwarfs as supernova progenitors.

## Abstract

We perform calculations of white dwarfs endowed with strong magnetic fields. White dwarfs are the progenitors of supernova Type Ia explosions and they are widely used as candles to show that the Universe is expanding and accelerating. However, observations of ultraluminous supernovae have suggested that the progenitor of such an explosion should be a white dwarf with mass above the well-known Chandrasekhar limit $\sim \,$1.4 $\rm{M_{\odot}}$. In corroboration with other works, but by using a fully general relativistic framework, we obtained also strongly magnetized white dwarfs with masses $\rm{M \sim 2.0\,\, M_{\odot}}$.