KFU. Card publication. The 35-day cycle in the X-ray binary HZ Her/Her X-1

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THE 35-DAY CYCLE IN THE X-RAY BINARY HZ HER/HER X-1

Form of presentation

Articles in international journals and collections

Year of publication

2020

Язык

английский

Authors, employees of KFU

Bikmaev Ilfan Fyaritovich, author

Irtuganov Eldar Nailevich, author

Bibliographic description in the original language

Kolesnikov D, Shakura N, Postnov K, The 35-day cycle in the X-ray binary HZ Her/Her X-1//Contributions of the Astronomical Observatory Skalnate Pleso. - 2020. - Vol.50, Is.2. - P.518-520.

Annotation

We present the results of modelling the 35-day superorbital changes in the B and V lightcurves and X-ray flux of HZ Her/Her X-1. The model is implemented in a computer program written in the C programming language, with a module for parameter optimisation written in Python. The model includes a tilted precessing and warped accretion disc around a freely precessing neutron star. The disc is warped near its inner edge due to interaction with the rotating neutron star magnetosphere. The magnetic torque depends on the precessional phase of the neutron star. The neutron star X-ray emission flux also depends on the free precession phase, which modulates the X-ray illumination of the optical star's atmosphere and the intensity of gas streams. We demonstrate that this model is able to reproduce both the optical observations of HZ Her and the behaviour of the system's 35-day X-ray cycle.

Keywords

двойные звездные системы, нейтронные звезды, аккреционные диски, оптические наблюдения

The name of the journal

Contributions of the Astronomical Observatory Skalnate Pleso

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85087085191&doi=10.31577%2fCAOSP.2020.50.2.518&partnerID=40&md5=9514c26b11d91c85dc7b949342ae3216

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=244725&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Bikmaev Ilfan Fyaritovich	ru_RU
dc.contributor.author	Irtuganov Eldar Nailevich	ru_RU
dc.date.accessioned	2020-01-01T00:00:00Z	ru_RU
dc.date.available	2020-01-01T00:00:00Z	ru_RU
dc.date.issued	2020	ru_RU
dc.identifier.citation	Kolesnikov D, Shakura N, Postnov K, The 35-day cycle in the X-ray binary HZ Her/Her X-1//Contributions of the Astronomical Observatory Skalnate Pleso. - 2020. - Vol.50, Is.2. - P.518-520.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=244725&p_lang=2	ru_RU
dc.description.abstract	Contributions of the Astronomical Observatory Skalnate Pleso	ru_RU
dc.description.abstract	We present the results of modelling the 35-day superorbital changes in the B and V lightcurves and X-ray flux of HZ Her/Her X-1. The model is implemented in a computer program written in the C programming language, with a module for parameter optimisation written in Python. The model includes a tilted precessing and warped accretion disc around a freely precessing neutron star. The disc is warped near its inner edge due to interaction with the rotating neutron star magnetosphere. The magnetic torque depends on the precessional phase of the neutron star. The neutron star X-ray emission flux also depends on the free precession phase, which modulates the X-ray illumination of the optical star's atmosphere and the intensity of gas streams. We demonstrate that this model is able to reproduce both the optical observations of HZ Her and the behaviour of the system's 35-day X-ray cycle.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	двойные звездные системы	ru_RU
dc.subject	нейтронные звезды	ru_RU
dc.subject	аккреционные диски	ru_RU
dc.subject	оптические наблюдения	ru_RU
dc.title	The 35-day cycle in the X-ray binary HZ Her/Her X-1	ru_RU
dc.type	Articles in international journals and collections	ru_RU