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@article{42096,
author = {Török, Gabriel},
article_location = {FR - Francouzská republika},
article_number = {3},
doi = {http://dx.doi.org/10.1051/0004-6361/20079026},
keywords = {X-rays, binaries, Stars:neutron, Accretion, accretion disks},
language = {eng},
issn = {0004-6361},
journal = {Astronomy & Astrophysics},
title = {Reversal of the amplitude difference of kHz QPOs in six atoll sources},
volume = {497},
year = {2009}
}
TY - JOUR
ID - 42096
AU - Török, Gabriel
PY - 2009
TI - Reversal of the amplitude difference of kHz QPOs in six atoll sources
JF - Astronomy & Astrophysics
VL - 497
IS - 3
SP - 661-665
EP - 661-665
SN - 00046361
KW - X-rays, binaries, Stars:neutron, Accretion, accretion disks
N2 - AIMS: For six neutron-star atoll sources (4U 1608-52, 4U 1636-53, 4U 0614+09, 4U 1728-34, 4U 1820-30 and 4U 1735-44) we investigate the relationship between the observed fractional rms amplitudes of the twin kHz QPOs. We discuss whether this displays features that could have a physical meaning in terms of the proposed QPO models. RESULTS: For each of the six sources, we find that there is a point in the R domain around which the amplitudes of the two twin kHz QPOs are the same. We find such a point located inside a narrow interval R=1.5 +-3%. Further investigation is needed in the case of two sources to explore this finding, since we have not determined this point in Set II. There is evidence of a similar point close to R = 1.33 or R = 1.25 in the foursources.
ER -
TÖRÖK, Gabriel. Reversal of the amplitude difference of kHz QPOs in six atoll sources. \textit{Astronomy \&{} Astrophysics}. FR - Francouzská republika, 2009, roč.~497, č.~3, s.~661-665. ISSN~0004-6361. Dostupné z: https://dx.doi.org/10.1051/0004-6361/20079026.
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