Vibration Powered Radiation of Quaking Magnetar

TL;DR

This paper proposes a model where quake-induced torsional Alfven vibrations in magnetars, coupled with magnetic field decay, explain the observed long-period pulsed X-ray radiation.

Contribution

It introduces a vibration-powered magnetar model linking seismic vibrations and magnetic decay to observed radiation, expanding understanding of magnetar emissions.

Findings

Magnetic field decay causes lengthening of pulsation periods.

Seismic vibrations convert into magneto-dipole radiation.

Model explains long-period X-ray pulsations from magnetars.

Abstract

In juxtaposition with the standard model of rotation powered pulsar, the model of vibration powered magnetar undergoing quake-induced torsional Alfven vibrations in its own ultra strong magnetic field experiencing decay is considered. The presented line of argument suggests that gradual decrease of frequencies (lengthening of periods) of long-periodic pulsed radiation detected from a set of X-ray sources can be attributed to magnetic-field-decay induced energy conversion from seismic vibrations to magneto-dipole radiation of quaking magnetar.