arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1009.0341astro-ph.HE
收藏

异常X射线脉冲星1 E 1841-045的朱雀观测

Suzaku Observation of the Anomalous X-ray Pulsar 1E 1841-045

Mikio Morii, Shunji Kitamoto, Noriaki Shibazaki, Nobuyuki Kawai, Makoto Arimoto, Masaru Ueno, Takayoshi Kohmura, Yukikatsu Terada, Shigeo Yamauchi, Hiromitsu Takahashi

摘要:

我们报告了朱雀观测的异常X射线脉冲星(AXP)1 E 1841-045的超新星遗迹Kes 73的中心的结果。我们证实,由以前的单独观测得到的能量依赖的光谱模型也满足在宽的能量范围从0.4到~70 keV,同时。这里,低于~10 keV的模型是黑体(BB)和幂律(PL)函数的组合,或者是在0.6 - 7.0 keV具有不同温度的两个BB的组合(Morii等人,2003),而高于~20 keV的模型是PL函数(Kuiper Hermsen Mendez,2004)。BB + PL + PL的组合被发现最好地代表相位平均光谱。相位分辨光谱表明存在两个发射区域,一个具有热性质,另一个具有非热性质。BB + BB + PL的组合也被发现很好地代表了相位平均光谱。然而,我们发现,这个模型是物理上不可接受的,由于一个过大的面积的黑体发射区。尽管如此,我们发现,温度和半径的两个黑体组件显示出适度的相关性的相位分辨光谱。在各种磁星的相位平均光谱之间观察到相同的相关性这一事实(Nakagawa等人,2009年)表明,自相似函数可以近似低于10 keV的磁星的固有能量谱。

英文摘要:

We report the results of a Suzaku observation of the anomalous X-ray pulsar (AXP) 1E 1841-045 at a center of the supernova remnant Kes 73. We confirmed that the energy-dependent spectral models obtained by the previous separate observations were also satisfied over a wide energy range from 0.4 to ~70 keV, simultaneously. Here, the models below ~10 keV were a combination of blackbody (BB) and power-law (PL) functions or of two BBs wit h different temperatures at 0.6 - 7.0 keV (Morii et al. 2003), and that above ~20 keV was a PL function (Kuiper Hermsen Mendez 2004). The combination BB + PL + PL was found to best represent the phase-averaged spectrum. Phase-resolved spectroscopy indicated the existence of two emission regions, one with a thermal and the other with a non-thermal nature. The combination BB + BB + PL was also found to represent the phase-averaged spectrum well. However, we found that this model is physically unacceptable due to an excessively large area of the emission region of the blackbody. Nonetheless, we found that the temperatures and radii of the two blackbody components showed moderate correlations in the phase-resolved spectra. The fact that the same correlations have been observed between the phase-averaged spectra of various magnetars (Nakagawa et al. 2009) suggests that a self-similar function can approximate the intrinsic energy spectra of magnetars below ~10 keV.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑