KFU. Card publication. Optical and X-ray study of v 404 Cyg during its activity in the Summer 2015

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FEDERAL UNIVERSITY

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OPTICAL AND X-RAY STUDY OF V 404 CYG DURING ITS ACTIVITY IN THE SUMMER 2015

Form of presentation

Articles in international journals and collections

Year of publication

2019

Язык

английский

Authors, employees of KFU

Bikmaev Ilfan Fyaritovich, author

Irtuganov Eldar Nailevich, author

Nikolaeva Evgeniya Aleksandrovna, author

Bibliographic description in the original language

Nikolaeva E.A, Bikmaev I.F, Glushkov M.V, Optical and X-ray study of v 404 Cyg during its activity in the Summer 2015//Proceedings of the International Astronomical Union. - 2019. - Vol., Is.. - P.268-272.

Annotation

The black hole X-ray binary V404Cyg was studied during of the 2015 outburst. Optical photometry and spectroscopy were performed by using 1.5-meter Russian-Turkish telescope (RTT-150) facilities at the TUBITAK National Observatory (Antalya, Turkey). From June 22 to June 28, 2015, shell expansion velocity decreased from 650 to 400 km s-1 as measured by Hα and Hβ lines and from 450 to 330 km s-1 as measured by HeI and HeII lines. Thus, the shell expansion occurred with deceleration, where the hydrogen and helium line formation regions are at different radial distances from the center of the star. The correlation of flow variability in the optical and X-ray ranges is caused by fluctuations in the rate of accretion near a compact source where X-ray photons are generated.

Keywords

V404 Cyg; low-mass X-ray binary

The name of the journal

Proceedings of the International Astronomical Union

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85077471278&doi=10.1017%2fS1743921319001200&partnerID=40&md5=4a10bf0f4d12d6bb8135a7c48f945c4e

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

https://repository.kpfu.ru/eng/?p_id=235150&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.contributor.author	Nikolaeva Evgeniya Aleksandrovna	ru_RU
dc.date.accessioned	2019-01-01T00:00:00Z	ru_RU
dc.date.available	2019-01-01T00:00:00Z	ru_RU
dc.date.issued	2019	ru_RU
dc.identifier.citation	Nikolaeva E.A, Bikmaev I.F, Glushkov M.V, Optical and X-ray study of v 404 Cyg during its activity in the Summer 2015//Proceedings of the International Astronomical Union. - 2019. - Vol., Is.. - P.268-272.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=235150&p_lang=2	ru_RU
dc.description.abstract	Proceedings of the International Astronomical Union	ru_RU
dc.description.abstract	The black hole X-ray binary V404Cyg was studied during of the 2015 outburst. Optical photometry and spectroscopy were performed by using 1.5-meter Russian-Turkish telescope (RTT-150) facilities at the TUBITAK National Observatory (Antalya, Turkey). From June 22 to June 28, 2015, shell expansion velocity decreased from 650 to 400 km s-1 as measured by Hα and Hβ lines and from 450 to 330 km s-1 as measured by HeI and HeII lines. Thus, the shell expansion occurred with deceleration, where the hydrogen and helium line formation regions are at different radial distances from the center of the star. The correlation of flow variability in the optical and X-ray ranges is caused by fluctuations in the rate of accretion near a compact source where X-ray photons are generated.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject		ru_RU
dc.title	Optical and X-ray study of v 404 Cyg during its activity in the Summer 2015	ru_RU
dc.type	Articles in international journals and collections	ru_RU