Query : 2005A&A...434L...5V

2005A&A...434L...5V - Astronomy and Astrophysics, volume 434, L5-8 (2005/4-4)

A simple model for the complex lag structure of microquasars.


Abstract (from CDS):

The phase lag structure between the hard and soft X-ray photons observed in GRS 1915+105 and XTE J1550-564 has been said to be ``complex'' because the phase of the Quasi-Periodic Oscillation fundamental Fourier mode changes with time and because the even and odd harmonics signs behave differently. From simultaneous X-ray and radio observations this seems to be related to the presence of a jet (level of radio emission). We propose a simple idea where a partial absorption of the signal can shift the phases of the Fourier modes and account for the phase lag reversal. We also briefly discuss a possible physical mechanism that could lead to such an absorption of the quasi-periodic oscillation modulation.

Abstract Copyright:

Journal keyword(s): X-rays: binaries - stars: individual: GRS 1915+105, XTE J1550-564 - accretion, accretion disks

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
1 V* V381 Nor HXB 15 50 58.6637920704 -56 28 35.258385000   17.95 16.6     K3III 1146 0
2 Granat 1915+105 HXB 19 15 11.55576 +10 56 44.9052           ~ 2559 0

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