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BeppoSAX Observations of the Soft Gamma-Ray Repeater SGR 1806-20

S. Mereghetti·D. Cremonesi·M. Feroci·M. Tavani
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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.

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S. Mereghetti, D. Cremonesi, M. Feroci, M. Tavani. 2000-06-19. BeppoSAX Observations of the Soft Gamma-Ray Repeater SGR 1806-20. https://arxiv.org/abs/astro-ph/0006249

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