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Thermodynamic variables of microquasars inferred from tachyonic spectral maps

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  • Tomaschitz, Roman

Abstract

Tachyonic spectral densities of ultra-relativistic electron populations are fitted to the γ-ray spectra of two microquasars, LS 5039 and LSI +61°303. The superluminal spectral maps are obtained from BATSE, COMPTEL, EGRET, HESS, and MAGIC data sets. The spectral averaging is done with exponentially cut power-law densities. Estimates of the electron distributions generating the tachyon flux are obtained from the spectral fits, such as power-law indices, electron temperature and source counts. The internal energy and heat capacities of the source populations are calculated. An extensive entropy functional is defined for Boltzmann power-law densities and its stability is checked. The high-temperature limit of the thermodynamic variables is determined by the power-law index of the electron plasma, which enters in the scaling exponents as well as the amplitudes.

Suggested Citation

  • Tomaschitz, Roman, 2007. "Thermodynamic variables of microquasars inferred from tachyonic spectral maps," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 385(2), pages 558-572.
    • Handle: RePEc:eee:phsmap:v:385:y:2007:i:2:p:558-572
    DOI: 10.1016/j.physa.2007.06.009
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