Magnetic field on the brown dwarf LSR J1835+3259

TL;DR

This study models the magnetic spectrum of the brown dwarf LSR J1835+3259 using molecular lines to infer its magnetic field strength, comparing models with observational data from Keck to estimate a 2-3 kG magnetic field.

Contribution

It introduces a full-Stokes spectral modeling approach for brown dwarf magnetic field estimation using molecular lines, validated against observational data.

Findings

Magnetic field of approximately 2-3 kG detected

Modeling approach successfully matches observed spectra

Provides insights into magnetic properties of brown dwarfs

Abstract

We model the full-Stokes spectrum of the brown dwarf LSR J1835+3259 in the bands of the diatomic molecules CrH, TiO, and FeH in order to infer its magnetic properties. The models are then compared to the observational data obtained with the Low Resolution Imaging Spectrograph (LRISp) at the Keck observatory. Our preliminary analysis shows that the brown dwarf considered possesses a magnetic field of the order of 2-3 kG.