NAGIOS: RODERIC FUNCIONANDO

Energy and time-lag spectra of galactic black-hole X-ray sources in the low/hard state

DSpace Repository

Valencià Castellano

IMPORTANT: El repositori està en manteniment des del dia 28 de Novembre fins al 3 de Desembre, només es pot consultar, però no afegir contingut. Disculpeu les molèsties

Energy and time-lag spectra of galactic black-hole X-ray sources in the low/hard state

Show full item record

View (105.6Kb)

Reig Torres, Pablo; Kylafis, N.D.; Giannios, Dimitrios

This document is a artículoDate2003

Most, probably all, accreting binaries that are believed to contain a black-hole emit radio waves when they are in the low/hard state. Whenever this radio emission has been resolved, a jet-like structure has become apparent. We propose that Compton upscattering of low-energy photons in the jet can explain both the energy spectra and the time lags versus Fourier frequency observed in the low/hard state of black-hole systems. The soft photons originate in the inner part of the accretion disk. We have performed Monte Carlo simulations of Compton upscattering in a jet and have found that for a rather wide range of values of the parameters we can obtain power-law high-energy X-ray spectra with photon-number index in the range 1.5–2 and power-law time lags versus Fourier frequency with index ∼0.7. The black-hole source Cyg X-1 in the low/hard state is well described by our model.

Ver en el catálogo Trobes