Long-Term X-ray Variability in GX 354-0

Preprint

6 May 1998

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/9805077

Abstract

We report for the first time the detection of long-term X-ray variability in the bright bulge source GX 354-0 (=4U 1728-34) observed with the All Sky Monitor (ASM) on board the Rossi X-Ray Timing Explorer (RXTE). The 2-year RXTE ASM database reveals significant power at ~72 days. Similar behaviour was seen in the 6-year Ariel 5 ASM database, but at a period of ~63 days. The timescales and light curves resemble the ~78 days modulation seen in Cyg X-2 and we therefore interpret this modulation in GX 354-0 as a super-orbital effect.

Keywords

X RAY VARIABILITY
ASM DATABASE
LONG TERM X
TERM X RAY
DAYS
RXTE

All Related Versions

Version 1, 1998-05-06, ArXiv
Published version: New Astronomy, 3 (5), 301.

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