2012 JO4

Scritto il 12 Giu 2012 alle 01:41 in Pubblicazioni

Available from the Minor Planet Center.

Long-term studies of Z sources with hexte/rxte

Scritto il 06 Giu 2012 alle 01:40 in Pubblicazioni

Using the High Energy X-Ray Timing Experiment (HEXTE) on-board the Rossi
XRay Timing Explorer (RXTE) we perform a spectral study of the Z
sources, with emphasis on the production of hard X-ray tails (HXT). Data
from the Proportional Counter Array (PCA) were used to determine the
position of the source in the Z diagram. We present current results of
this ongoing study. Previous results show that, at least for Sco X-1,
there is no correlation between the presence of a HXT and the position
on the Z. For GX 5-1, in 1 out of 12 observations, the presence of a HXT
is compelling, although…

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