文章基本信息

标题：Spectral variability modes of GX 339-4 in a hard-to-soft state transition
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作者：M. Del Santo ; J. Malzac ; P. Ubertini,T.,Belloni 等
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2006
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：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.