Reverse of twin peak kHz QPO interrelationship in the six atoll
sources

D 2007

Reverse of twin peak kHz QPO interrelationship in the six atoll sources

ČERMÁK, Petr, Zdeněk STUCHLÍK and Gabriel TÖRÖK

Basic information

Original name

Reverse of twin peak kHz QPO interrelationship in the six atoll sources

Authors

ČERMÁK, Petr, Zdeněk STUCHLÍK and Gabriel TÖRÖK

Edition

Opava, Proceedings of RAGtime 8/9: Workshops on black holes and neutron stars, p. 511-522, 11 pp. 2007

Publisher

Slezská univerzita v Opavě, Filozoficko-přírodovědecká fakulta, Ústav fyziky

Other information

Language

English

Type of outcome

Stať ve sborníku

Field of Study

10308 Astronomy

Country of publisher

Czech Republic

Confidentiality degree

není předmětem státního či obchodního tajemství

Organization unit

Faculty of Philosophy and Science in Opava

ISBN

978-80-7248-419-5

Keywords in English

X rays, binaries, neutron stars, accretion discs

Links

LC06014, research and development project. MSM4781305903, plan (intention).

Změněno: 3/12/2020 13:51, Mgr. Pavlína Jalůvková

Abstract

V originále

For six neutron star atoll sources spanning wide range of frequencies we investigate whether the relationship between the rms amplitudes and quality factors of the observed kHzQPO LU display features that could have a significant meaning in terms of theproposed QPO models.We find for all the six sources that after the twin kHz QPOs pass a point (or the narrow interval) where their ratio R equals 1:5 the lower/upper oscillation becomes stronger/weakerthan other one with increasing QPO frequency. Existence of a similar effect close to R D 1:33 or R D 1:25 is also indicated. This interval lies between frequencies corresponding to 3=2 and 4=3 (or 5=4) frequency ratio. This finding implies restrictions to the orbital QPO models (both hot spot- and disc oscillations- like) and also to QPO modulation mechanism. In a wider context, our results may indicate the existence of an energy over flow between the upper and lower QPO mode when their ratio is close to ratio of small integral numbers.

Citovat

ČERMÁK, Petr, Zdeněk STUCHLÍK and Gabriel TÖRÖK. Reverse of twin peak kHz QPO interrelationship in the six atoll sources. In Proceedings of RAGtime 8/9: Workshops on black holes and neutron stars. Opava: Slezská univerzita v Opavě, Filozoficko-přírodovědecká fakulta, Ústav fyziky, 2007, p. 511-522, 11 pp. ISBN 978-80-7248-419-5.

@inproceedings{42062,
   author = {Čermák, Petr and Stuchlík, Zdeněk and Török, Gabriel},
   address = {Opava},
   booktitle = {Proceedings of RAGtime 8/9: Workshops on black holes and neutron stars},
   keywords = {X rays, binaries, neutron stars, accretion discs},
   language = {eng},
   location = {Opava},
   isbn = {978-80-7248-419-5},
   pages = {511-522},
   publisher = {Slezská univerzita v Opavě, Filozoficko-přírodovědecká fakulta, Ústav fyziky},
   title = {Reverse of twin peak kHz QPO interrelationship in the six atoll sources},
   year = {2007}
}

TY  - JOUR
ID  - 42062
AU  - Čermák, Petr - Stuchlík, Zdeněk - Török, Gabriel
PY  - 2007
TI  - Reverse of twin peak kHz QPO interrelationship in the six atoll sources
PB  - Slezská univerzita v Opavě, Filozoficko-přírodovědecká fakulta, Ústav fyziky
CY  - Opava
SN  - 9788072484195
KW  - X rays, binaries, neutron stars, accretion discs
N2  - For six neutron star atoll sources spanning wide range of frequencies we investigate whether the relationship between the rms amplitudes and quality factors of the observed kHzQPO LU display features that could have a significant meaning in terms of theproposed QPO models.We find for all the six sources that after the twin kHz QPOs pass a point (or the narrow interval) where their ratio R equals 1:5 the lower/upper oscillation becomes stronger/weakerthan other one with increasing QPO frequency. Existence of a similar effect close to R D 1:33 or R D 1:25 is also indicated. This interval lies between frequencies corresponding to 3=2 and 4=3 (or 5=4) frequency ratio. This finding implies restrictions to the orbital QPO models (both hot spot- and disc oscillations- like) and also to QPO modulation mechanism. In a wider context, our results may indicate the existence of an energy over flow between the upper and lower QPO mode when their ratio is close to ratio of small integral numbers.
ER  -

ČERMÁK, Petr, Zdeněk STUCHLÍK and Gabriel TÖRÖK. Reverse of twin peak kHz QPO interrelationship in the six atoll sources. In \textit{Proceedings of RAGtime 8/9: Workshops on black holes and neutron stars}. Opava: Slezská univerzita v Opavě, Filozoficko-přírodovědecká fakulta, Ústav fyziky, 2007, p.~511-522, 11 pp. ISBN~978-80-7248-419-5.

Detailed Information on Publication Record