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 0906.1604astro-ph.HE
收藏

磁星1 E 2259+586的中红外对应物

A Mid-Infrared Counterpart to the Magnetar 1E 2259+586

David L. Kaplan, Deepto Chakrabarty, Zhongxiang Wang, Stefanie Wachter

摘要:

报道了斯皮策空间望远镜发现的一颗4.5 μ m的异常X射线脉冲星(磁星)1 E2259 +586的对应物。中红外线通量密度在4.5 μ m处为6.3+/-1.0 uJy,在8 μ m处<20 uJy(95%置信度),或2-10 keV X射线通量的0.02%(消光校正)。结合我们的斯皮策测量与以前发表的近红外数据,我们表明,从1 E 2259+586的整体红外发射是定性类似的磁星4U 0142+61。因此,最初为4U 0142+61开发的被动X射线加热尘埃盘模型也可能适用于1 E 2259+586。然而,从这个来源的红外数据也可以拟合一个简单的幂律谱可能是从磁层发射预期。

英文摘要:

We report the discovery of a 4.5 um counterpart to the anomalous X-ray pulsar (magnetar) 1E 2259+586 with the Spitzer Space Telescope. The mid-infrared flux density is 6.3+/-1.0 uJy at 4.5 um and <20 uJy (at 95% confidence) at 8 um, or 0.02% of the 2-10 keV X-ray flux (corrected for extinction). Combining our Spitzer measurements with previously published near-infrared data, we show that the overall infrared emission from 1E 2259+586 is qualitatively similar to that from the magnetar 4U 0142+61. Therefore the passive X-ray-heated dust disk model originally developed for 4U 0142+61 might also apply to 1E 2259+586. However, the IR data from this source can also be fitted by a simple power-law spectrum as might be expected from magnetospheric emission.

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。

↑