Long-Term Studies of Cyg X-3 High-Mass X-ray Binary

被引：3

作者：

Sinitsyna, Vera G. ^{[1
]}

Sinitsyna, Vera Yu. ^{[1
]}

机构：

[1] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia

来源：

UNIVERSE | 2022年 / 8卷 / 02期

关键词：

massive binary system; Cyg X-3; black hole; multi-wavelength electromagnetic emission; GAMMA-RAY; RELATIVISTIC JET; EMISSION-LINES; COSMIC-RAYS; CYGNUS-X-3; PERIOD; BEHAVIOR; MODULATION; INTENSITY; OUTBURSTS;

D O I：

10.3390/universe8020057

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Cyg X-3 is the famous binary system containing a black hole that is actively studied through a wide range of the electromagnetic spectrum, from radio wavelengths to ultra-high-energy gamma-rays, but still not well-understood. The Cyg X-3 focusing investigations obtained from the long-term observations at 800 GeV-100 TeV energies with the SHALON telescope are presented. The modulation of the gamma-ray emission detected in these studies with an orbital period of 4.8 h was found, proving the identity of the observed object with Cyg X-3. The comparison of light curves in the wide energy range from radio to very high energy gamma-rays, folded on the Cyg X-3 orbital period, revealed the differences in the modulation amplitude and phase shifts. The studies of Cyg X-3 activity at very-high energies, including information about TeV and MeV-GeV flare and quenched states and the relationship between the ones in the entire wide energy range, are presented. The modulation of TeV gamma-ray flux with orbit along with the high luminosity of the companion star of Cyg X-3 and the close orbit of binary leads to an efficient generation of the part of gamma-ray emission in the inverse Compton scattering. The correlation of TeV fluxes with the flaring activity of Cyg X-3 at X-ray and radio ranges could be related to processes of powerful mass ejections from the central regions around the black hole.

引用

页数：17

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