About: ON MASS CONSTRAINTS IMPLIED BY THE RELATIVISTIC PRECESSION MODEL OF TWIN-PEAK QUASI-PERIODIC OSCILLATIONS IN CIRCINUS X-1

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Boutloukos et al. discovered twin-peak quasi-periodic oscillations (QPOs) in 11 observations of the peculiar Z-source Circinus X-1. Among several other conjunctions the authors briefly discussed the related estimate of the compact object mass following from the geodesic relativistic precession model for kHz QPOs. Neglecting the neutron star rotation they reported the inferred mass M-0 = 2.2 +/- 0.3 M-circle dot. We present a more detailed analysis of the estimate which involves the frame-dragging effects associated with rotating spacetimes. For a free mass we find acceptable fits of the model to data for (any) small dimensionless compact object angular momentum j = cJ/GM(2). Moreover, quality of the fit tends to increase very gently with rising j. Good fits are reached when M similar to M-0[1 + 0.55(j + j(2))]. Boutloukos et al. discovered twin-peak quasi-periodic oscillations (QPOs) in 11 observations of the peculiar Z-source Circinus X-1. Among several other conjunctions the authors briefly discussed the related estimate of the compact object mass following from the geodesic relativistic precession model for kHz QPOs. Neglecting the neutron star rotation they reported the inferred mass M-0 = 2.2 +/- 0.3 M-circle dot. We present a more detailed analysis of the estimate which involves the frame-dragging effects associated with rotating spacetimes. For a free mass we find acceptable fits of the model to data for (any) small dimensionless compact object angular momentum j = cJ/GM(2). Moreover, quality of the fit tends to increase very gently with rising j. Good fits are reached when M similar to M-0[1 + 0.55(j + j(2))]. (en)
Title	ON MASS CONSTRAINTS IMPLIED BY THE RELATIVISTIC PRECESSION MODEL OF TWIN-PEAK QUASI-PERIODIC OSCILLATIONS IN CIRCINUS X-1 ON MASS CONSTRAINTS IMPLIED BY THE RELATIVISTIC PRECESSION MODEL OF TWIN-PEAK QUASI-PERIODIC OSCILLATIONS IN CIRCINUS X-1 (en)
skos:prefLabel	ON MASS CONSTRAINTS IMPLIED BY THE RELATIVISTIC PRECESSION MODEL OF TWIN-PEAK QUASI-PERIODIC OSCILLATIONS IN CIRCINUS X-1 ON MASS CONSTRAINTS IMPLIED BY THE RELATIVISTIC PRECESSION MODEL OF TWIN-PEAK QUASI-PERIODIC OSCILLATIONS IN CIRCINUS X-1 (en)
skos:notation	RIV/47813059:19240/10:#0002997!RIV11-MSM-19240___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA202/09/0772), P(LC06014), Z(MSM4781305903)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Török, Gabriel Stuchlík, Zdeněk Šrámková, Eva Urbanec, Martin Bakala, Pavel
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Slezská univerzita v Opavě / Filozoficko-přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	276750
http://linked.open...ai/riv/idVysledku	RIV/47813059:19240/10:#0002997
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	HIGH-FREQUENCY QPOS, EQUATION-OF-STATE, X-RAY BINARIES, ACCRETING NEUTRON-STARS, SOURCE 4U 1636-53, BLACK-HOLE, GENERAL-RELATIVITY, DISK OSCILLATIONS, ATOLL SOURCE, KHZ QPOS (en)
http://linked.open.../riv/klicoveSlovo	HIGH-FREQUENCY QPOS EQUATION-OF-STATE X-RAY BINARIES KHZ QPOS SOURCE 4U 1636-53 ACCRETING NEUTRON-STARS ATOLL SOURCE BLACK-HOLE DISK OSCILLATIONS GENERAL-RELATIVITY
http://linked.open...odStatuVydavatele	CA - Kanada
http://linked.open...ontrolniKodProRIV	[F1C8435FB74B]
http://linked.open...i/riv/nazevZdroje	ASTROPHYSICAL JOURNAL
http://linked.open...in/vavai/riv/obor	BE
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Current problems of gravitation, general relativity and relativistic astrophysics Center for Theoretical Astrophysics
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	714
http://linked.open...iv/tvurceVysledku	Stuchlík, Zdeněk Török, Gabriel Šrámková, Eva Urbanec, Martin Bakala, Pavel
http://linked.open...n/vavai/riv/zamer	Relativistic and particle physics and its astrophysical application
issn	0004-637X
number of pages	9 (xsd:int)
http://localhost/t...ganizacniJednotka	19240

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