arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.00442astro-ph.HE
收藏

多波长搜索候选$γ$射线毫秒双星的黑寡妇和红背对应体

A Multi-wavelength search for Black Widows and Redbacks counterparts of candidate $γ$-ray millisecond pulsars

C. Braglia, R. P. Mignani, A. Belfiore, M. Marelli, G. L. Israel, G. Novara, A. De Luca, A. Tiengo, P. M. Saz Parkinson

摘要:

{ \em Fermi}在$γ$ -射线中探测到的大量毫秒双星(MSP)促使人们在几个未识别的$γ$ -射线源中寻找这些天体。有趣的目标是一个子类的二进制MSP,被称为“黑寡妇”(BW)和“红背”(RB),这是在轨道上与低质量的非简并同伴完全或部分烧蚀的辐射从MSP风。这些系统在无线电脉冲星巡天中很容易被忽略,因为来自烧蚀伴星光球层的双星内等离子体会使无线电信号黯然失色,使它们成为多波长观测的更好目标。我们使用来自公共数据库的光学和X射线数据对费米大视场望远镜(LAT)第三源目录(3FGL)中所有未识别的$γ$射线源进行了系统调查,根据机器学习技术分析,这些射线源已被预选为可能的MSP候选者。我们通过恢复已知的二进制BW/RB标识来测试我们的过程,并搜索新的标识,找到可能的候选者。同时,我们调查了先前提出的BW/RB识别,并根据更新的$γ$射线源坐标排除了其中一种。

英文摘要:

The wealth of detections of millisecond pulsars (MSPs) in $γ$-rays by {\em Fermi} has spurred searches for these objects among the several unidentified $γ$-ray sources. Interesting targets are a sub-class of binary MSPs, dubbed "Black Widows" (BWs) and "Redbacks" (RBs), which are in orbit with low-mass non-degenerate companions fully or partially ablated by irradiation from the MSP wind. These systems can be easily missed in radio pulsar surveys owing to the eclipse of the radio signal by the intra-binary plasma from the ablated companion star photosphere, making them better targets for multi-wavelength observations. We used optical and X-ray data from public databases to carry out a systematic investigation of all the unidentified $γ$-ray sources from the Fermi Large Area Telescope (LAT) Third Source Catalog (3FGL), which have been pre-selected as likely MSP candidates according to a machine-learning technique analysis. We tested our procedure by recovering known binary BW/RB identifications and searched for new ones, finding possible candidates. At the same time, we investigated previously proposed BW/RB identifications and we ruled out one of them based upon the updated $γ$-ray source coordinates.

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。

↑