BeppoSAX Observations of the Soft Gamma-Ray Repeater SGR 1806-20
Astrophysics
2007-05-23 v1
Abstract
We have observed with the BeppoSAX satellite the quiescent counterpart of the Soft Gamma-ray Repeater SGR 1806-20. Observations performed in October 1998 and in March 1999 showed that this pulsar continued its long term spin-down trend at an average rate of ~8 10e-11 s/s while its flux and spectrum remained remarkably constant between the two observations, despite the soft gamma-ray bursting activity that occurred in this period. We also reanalyzed archival ASCA data, that when compared with the new BeppoSAX observations, show evidence for a long term variation in luminosity.
Cite
@article{arxiv.astro-ph/0006249,
title = {BeppoSAX Observations of the Soft Gamma-Ray Repeater SGR 1806-20},
author = {S. Mereghetti and D. Cremonesi and M. Feroci and M. Tavani},
journal= {arXiv preprint arXiv:astro-ph/0006249},
year = {2007}
}
Comments
5 pages, latex, 2 figures, Accepted for publication on Astronomy and Astrophysics