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Spectral variability modes of GX 339-4 in a hard-to-soft state transition

M. Del Santo·J. Malzac·P. Ubertini·T. Belloni
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Abstract

We report on INTEGRAL observations performed during the 2004 outburst of the bright black hole transient GX 339-4. We analysed IBIS and JEM-X public data starting on 9th August and lasting about one month. During this period GX 339-4 showed spectral state transitions. In order to seek for variability patterns, a principal component analysis (PCA) has been used.

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M. Del Santo, J. Malzac, P. Ubertini, T. Belloni. 2006-11-03. Spectral variability modes of GX 339-4 in a hard-to-soft state transition. https://arxiv.org/abs/astro-ph/0611107

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