Plenary SessionOpen Access

DYNAMICAL EVOLUTION OF SPECTRAL AND TIMING PROPERTIES OF COMPACT OBJECTS: SOME EXAMPLES

SANDIP K. CHAKRABARTI

S. N. Bose National Centre for Basic Sciences, JD Block, Salt Lake, Kolkata 700098, India

Also at Indian Centre for Space Physics, 43 Chalantika, Garia Station Rd., Kolkata 700084.

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and

PARTHA S. PAL

Indian Centre for Space Physics, 43 Chalantika, Garia Station Rd., Kolkata 700084, India

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https://doi.org/10.1142/S2010194512006277Cited by:0 (Source: Crossref)

Abstract

We present examples of rapid changes in spectral and timing properties in accretion flows around compact objects and discuss what could be going on in these systems. We find a new way of quantifying the variation of the flow geometry. We show the evolution of the variation of the Comptonization efficiency computed from the ratio of the Comptonized photons and the injected seed photons. The time evolution is a direct consequence of the variation of the accretion rates which changes the hydrodynamic and radiative properties of the flow and therefore the flow geometry.

Keywords:

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DYNAMICAL EVOLUTION OF SPECTRAL AND TIMING PROPERTIES OF COMPACT OBJECTS: SOME EXAMPLES

Abstract

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