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Title: The variability plane of accreting compact objects
Author: Körding, E. G.
Migliari, Simone
Fender, R. P.
Belloni, T.
Knigge, C.
McHardy, I.
Keywords: Forats negres (Astronomia)
Galàxies actives
Estels binaris de raigs X
Black holes (Astronomy)
Active galaxies
X-ray binaries
Issue Date: Sep-2007
Publisher: Royal Astronomical Society
Abstract: Recently, it has been shown that soft-state black hole X-ray binaries and active galactic nuclei populate a plane in the space defined by the black hole mass, accretion rate and characteristic frequency. We show that this plane can be extended to hard-state objects if one allows a constant offset for the frequencies in the soft and the hard state. During a state transition, the frequencies rapidly move from one scaling to the other depending on an additional parameter, possibly the disc fraction. The relationship among frequency, mass and accretion rate can be further extended by including weakly accreting neutron stars (NSs). We explore if the lower kHz quasi-periodic oscillations of NSs and the dwarf nova oscillations of white dwarfs can be included as well and discuss the physical implications of the found correlation.
Note: Reproducció del document publicat a:
It is part of: Monthly Notices of the Royal Astronomical Society, 2007, vol. 380, num. 1, p. 301-310
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ISSN: 0035-8711
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)
Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

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