Centaurus X-3: A source of high-energy gamma rays

被引：26

作者：

Chadwick, PM ^{[1
]}

Dickinson, MR ^{[1
]}

Dipper, NA ^{[1
]}

Kendall, TR ^{[1
]}

McComb, TJL ^{[1
]}

Orford, KJ ^{[1
]}

Osborne, JL ^{[1
]}

Rayner, SM ^{[1
]}

Roberts, ID ^{[1
]}

Shaw, SE ^{[1
]}

Turver, KE ^{[1
]}

机构：

[1] Univ Durham, Dept Phys, Sci Labs, Durham DH1 3LE, England

来源：

ASTROPHYSICAL JOURNAL | 1998年 / 503卷 / 01期

关键词：

gamma rays : observations; stars : individual (Cen X-3);

D O I：

10.1086/305998

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Centaurus X-3 is a well studied high-mass accreting X-ray binary and a variable source of high-energy gamma rays with energies from 100 MeV to 1 TeV. Previous results have suggested that the origin of the gamma rays is not the immediate vicinity of the neutron star but is sited in the accretion disk, perhaps in an accretion wake. The Durham Mark 6 gamma-ray telescope has been used to measure the gamma-ray flux from Centaurus X-3 with much higher sensitivity than previous ground-based measurements. The flux above similar to 400 GeV was measured to be (2 +/- 0.3) x 10(-11) cm(-2) s(-1) and appears constant over a period of 2-3 months. In 10 hours of observations there is no evidence for periodicity in the detected gamma rays at the X-ray spin period either from a site in the region of the neutron star or from any other potential site in the orbit.

引用

页码：391 / 395

页数：5

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