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observational overview of state transitions in x-ray binaries

observational overview of state transitions in x-ray binaries

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OUTBURST LIGHT CURVES<br />

4U 1543-47<br />

GRO J1655-40<br />

RXTE/PCA<br />

GX 339-4<br />

H1743-322<br />

Here I show a few examples <strong>of</strong> <strong>in</strong>dividual outbursts as observed with the RXTE/PCA. The large<br />

variety <strong>in</strong> outburst shapes is obvious. Outbursts typically last from a few weeks to a year.<br />

Some show a very fast rise to their peak, while <strong>in</strong> other sources it is much slower. Others<br />

show multiple peaks or very irregular shapes. Strong flar<strong>in</strong>g, like shown here <strong>in</strong> GRO<br />

J1655-40 and H1743-322, is typically only seen <strong>in</strong> the brightest outbursts, which go above,<br />

say 20% Edd<strong>in</strong>gton.

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