Mass-angular-momentum relations implied by models of twin peak quasi-periodic oscillations

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19240%2F12%3A%230004565" target="_blank" >RIV/47813059:19240/12:#0004565 - isvavai.cz</a>

Result on the web

<a href="http://iopscience.iop.org/0004-637X/760/2/138/pdf/0004-637X_760_2_138.pdf" target="_blank" >http://iopscience.iop.org/0004-637X/760/2/138/pdf/0004-637X_760_2_138.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0004-637X/760/2/138" target="_blank" >10.1088/0004-637X/760/2/138</a>

Result language

angličtina

Original language name

Mass-angular-momentum relations implied by models of twin peak quasi-periodic oscillations

Original language description

Twin peak quasi-periodic oscillations (QPOs) appear in the X-ray power-density spectra of several accreting low-mass neutron star (NS) binaries. Observations of the peculiar Z-source Circinus X-1 display unusually low QPO frequencies. Using these observations, we have previously considered the relativistic precession (RP) twin peak QPO model to estimate the mass of the central NS in Circinus X-1. We have shown that such an estimate results in a specific mass-angular-momentum (M - j) relation rather thana single preferred combination of M and j. Here we confront our previous results with another binary, the atoll source 4U 1636-53 that displays the twin peak QPOs at very high frequencies, and extend the consideration to various twin peak QPO models. Inanalogy to the RP model, we find that these imply their own specific M - j relations. We explore these relations for both sources and note differences in the ? 2 behavior that represent a dichotomy between high- and low-frequency sources

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BN - Astronomy and celestial mechanics, astrophysics

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2012

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Astrophysical Journal

ISSN

0004-637X

e-ISSN

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Volume of the periodical

760

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

15

Pages from-to

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UT code for WoS article

000311217000042

EID of the result in the Scopus database

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