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	Observations of cygnus x-1 in the mev band by the integral imager
	Walter, R.1; Xu, M.1,2
刊名	Astronomy & astrophysics
	2017-07-01
卷号	603页码:6
关键词	Gamma rays: stars X-rays: binaries Stars: black holes Methods: data analysis Acceleration of particles Accretion, accretion disks
ISSN号	1432-0746
DOI	10.1051/0004-6361/201629347
通讯作者	Walter, r.(roland.walter@unige.ch)
英文摘要	Context. the spectrum of the mev tail detected in the black-hole candidate cygnus x-1 remains controversial as it appeared much harder when observed with the integral imager ibis than with the integral spectrometer spi or cgro. aims. we present an independent analysis of the spectra of cygnus x-1 observed by ibis in the hard and soft states. methods. we developed a new analysis software for the picsit detector layer and for the compton mode data of the ibis instrument and calibrated the idiosyncrasies of the picsit front-end electronics. results. the spectra of cygnus x-1 obtained for the hard and soft states with the integral imager ibis are compatible with those obtained with the integral spectrometer spi, with cgro, and with the models that attribute the mev hard tail either to hybrid thermal/non-thermal comptonisation or to synchrotron emission.
WOS关键词	HIGH-ENERGY EMISSION ; GAMMA-RAY EMISSION ; BLACK-HOLE ; SPECTRAL VARIABILITY ; SOFT STATE ; JET ; HARD ; SPI ; IBIS/PICSIT ; ONBOARD
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
语种	英语
出版者	EDP SCIENCES S A
WOS记录号	WOS:000406619100027
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2176959
专题	高能物理研究所
通讯作者	Walter, R.
作者单位	1.Univ Geneva, Astron Dept, Chemin Ecogia 16, CH-1290 Versoix, Switzerland 2.Chinese Acad Sci, Inst High Energy Phys, 19B Yuquan Lu, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Walter, R.,Xu, M.. Observations of cygnus x-1 in the mev band by the integral imager[J]. Astronomy & astrophysics,2017,603:6.
APA	Walter, R.,&Xu, M..(2017).Observations of cygnus x-1 in the mev band by the integral imager.Astronomy & astrophysics,603,6.
MLA	Walter, R.,et al."Observations of cygnus x-1 in the mev band by the integral imager".Astronomy & astrophysics 603(2017):6.

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