J 2009

Reversal of the amplitude difference of kHz QPOs in six atoll sources

TÖRÖK, Gabriel

Basic information

Original name

Reversal of the amplitude difference of kHz QPOs in six atoll sources

Edition

Astronomy & Astrophysics, FR - Francouzská republika, 2009, 1432-0746

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Confidentiality degree

není předmětem státního či obchodního tajemství

Organization unit

Institute of physics in Opava

Keywords in English

X-rays:binaries ?Stars:neutron? Accretion, accretion disks

Tags

International impact

Links

MSM4781305903, plan (intention).
Změněno: 6/4/2021 13:44, Mgr. Pavlína Jalůvková

Abstract

V originále

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. METHOD: We consider the difference in rms amplitude between the upper and lower kHz QPOs, as a function of the frequency ratio R. We compare two data sets. Set I is a collection taken from published data. Set II has rms amplitude values obtained by automatic fitting of continuous segments of RXTE-PCA observations.