Gamma-ray upper limits on magnetars with 6 years of Fermi-LAT observations
High Energy Astrophysical Phenomena
2017-01-25 v1
Abstract
We report on the search for gamma-ray emission from 20 magnetars using 6 years of Fermi, Large Area Telescope (LAT) observations. No significant evidence for gamma-ray emission from any of the currently-known magnetars is found. We derived the most stringent upper limits to date on the 0.1--10 GeV emission of Galactic magnetars, which are estimated between erg s cm. Gamma-ray pulsations were searched for the four magnetars having reliable ephemerides over the observing period, but none were detected. On the other hand, we also studied the gamma-ray morphology and spectra of seven Supernova Remnants associated or adjacent to the magnetars.
Cite
@article{arxiv.1607.03778,
title = {Gamma-ray upper limits on magnetars with 6 years of Fermi-LAT observations},
author = {Jian Li and Nanda Rea and Diego F. Torres and Emma de Ona-Wilhelmi},
journal= {arXiv preprint arXiv:1607.03778},
year = {2017}
}
Comments
22 pages, 4 figures, 2 tables, submitted to ApJ