title   
  

Low/hard state of microquasars at low luminosities

Dinçer, Tolga and Kalemci, Emrah and Tomsick, John A. and Buxton, Michelle (2008) Low/hard state of microquasars at low luminosities. In: 7th Microquasar Workshop, Foça, İzmir, Turkey (Accepted/In Press)

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Official URL: http://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=62

Abstract

Galactic black hole transients (GBHTs) spend most of their time in the low/hard spectral state during the outburst decay. This state exhibits a hard X-ray spectrum with X-ray flux correlating with both the radio and the infrared flux. As the luminosity declines, the spectra of the GBHTs got harder. However, for a few sources at very low luminosity levels a softening of the spectrum has been observed. In this work we discuss the evolution of GBHTs at the very lowest luminosity levels using RXTE data and discuss the behavior of the X-ray spectrum, as well as the reported correlations.

Item Type:Papers in Conference Proceedings
Subjects:Q Science > QB Astronomy > QB460-466 Astrophysics
ID Code:9590
Deposited By:Emrah Kalemci
Deposited On:24 Oct 2008 09:46
Last Modified:24 Oct 2008 09:46

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