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arXiv 2203.14947astro-ph.HE
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来自哈勃太空望远镜深度搜索的磁星对应物的新候选者

New candidates for magnetar counterparts from a deep search with the Hubble Space Telescope

A. A. Chrimes, A. J. Levan, A. S. Fruchter, P. J. Groot, C. Kouveliotou, J. D. Lyman, N. R. Tanvir, K. Wiersema

摘要:

我们报告发现六个新的磁星对应候选人从深近红外哈勃太空望远镜成像。新的候选者是十九个磁星的样本之一,我们提供了2018-2020年期间获得的HST数据。我们确认了先前建立的近红外对应物的可变性,并根据其与X射线定位的接近程度,新确定了PSRJ 1622 -4950、SwiftJ1822.3-1606、CXOUJ171405.7-381031、SwiftJ 1833 -0832、SwiftJ1834.9-0846和AXJ1818.8-1559的候选物。新的候选人与现有的对应人口的颜色,幅度和近红外X射线光谱指数进行比较。我们发现AXJ1818.8-1559的两个候选者都与先前建立的对应物一致。其他新的候选者很可能是偶然的排列,或者有不同的起源,因为它们的近红外辐射以前在磁星中没有看到过。需要对这些候选者进行进一步的观察和研究,以确定其性质。

英文摘要:

We report the discovery of six new magnetar counterpart candidates from deep near-infrared Hubble Space Telescope imaging. The new candidates are among a sample of nineteen magnetars for which we present HST data obtained between 2018-2020. We confirm the variability of previously established near-infrared counterparts, and newly identify candidates for PSRJ1622-4950, SwiftJ1822.3-1606, CXOUJ171405.7-381031, SwiftJ1833-0832, SwiftJ1834.9-0846 and AXJ1818.8-1559 based on their proximity to X-ray localisations. The new candidates are compared with the existing counterpart population in terms of their colours, magnitudes, and near-infrared to X-ray spectral indices. We find two candidates for AXJ1818.8-1559 which are both consistent with previously established counterparts. The other new candidates are likely to be chance alignments, or otherwise have a different origin for their near-infrared emission not previously seen in magnetar counterparts. Further observations and studies of these candidates are needed to firmly establish their nature.

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。

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