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X-RAY EMISSION FROM THE DOUBLE PULSAR SYSTEM J0737-3039

机译:双脉冲系统J0737-3039的X射线发射

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We report on a 10 ks observation of the double pulsar system J0737 -3039 obtained with the Chandra X-Ray Observatory's, Advanced CCD Imaging Spectrometer. We detect the system as a point source with coordinates (J2000.0) R.A. = 07~h37~m51.23~s, decl. = -30°39′40.9″, making this the first double neutron star system to be detected at X-ray energies. Only 77 source counts are detected. The data are represented satisfactorily by a power-law spectrum with photon index Γ = 2.9 +- 0.4. The inferred 0.2-10 keV luminosity is ≈ 2 x 10~(30) ergs s~(-1) for a distance of 0.5 kpc. We do not detect any significant variability with orbital phase in these data, which span one full orbit. These results are consistent with the X-ray emission originating solely from the magnetosphere of the energetic A pulsar, with an efficiency for conversion of rotational energy to X-rays in this band of ~0.04%, although we cannot exclude other possibilities.
机译:我们报告了使用钱德拉X射线天文台的先进CCD成像光谱仪获得的双脉冲星系统J0737 -3039的10 ks观测结果。我们将系统检测为坐标为(J2000.0)R.A.的点源。 = 07〜h37〜m51.23〜s,默认= -30°39′40.9“,这是第一个在X射线能量下被检测到的双中子星系统。仅检测到77个源计数。数据以光子指数Γ= 2.9±0.4的幂律谱令人满意地表示。推断的0.2-10 keV发光度在0.5 kpc的距离上约为≈2 x 10〜(30)ergs s〜(-1)。我们没有检测到这些数据在一个完整轨道上的轨道相位有任何明显的变化。这些结果与仅来自高能脉冲星磁层的X射线发射相一致,尽管不能排除其他可能性,但在该频带内将旋转能转换为X射线的效率约为0.04%。

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