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arXiv 1608.06952astro-ph.HE
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一种识别邻近FRB宿主星系的新方法

A novel approach for identifying host galaxies of nearby FRBs

Akshaya Rane, Abraham Loeb

摘要:

我们报告的一个子集的旋转无线电瞬变(RRATs),拥有一个分散措施(DM)附近或以上的最大银河值在其方向上的宿主星系的搜索。这些RRAT可能起源于河外,因此是快速射电暴(FRB)。在如此短的距离上,天空中相关星系的大小与单碟望远镜的光束大小相当(例如,帕克斯光束的$7.0'$半径)。因此,如果发现这种关联,与寻找更遥远的FRB的宿主星系相比,可能更加确定。我们没有发现任何宿主星系与接近最大银河DM的六个RRAT有关。这一结果与在这个体积内找到FRB宿主星系的概率也非常小的事实相一致。我们建议,未来的后续观测,这样的RRAT进行寻找本地宿主星系以及FRB的来源。

英文摘要:

We report on a search for host galaxies of a subset of Rotating Radio Transients (RRATs) that possess a dispersion measure (DM) near or above the maximum Galactic value in their direction. These RRATs could have an extragalactic origin and therefore be Fast Radio Bursts (FRBs). The sizes of related galaxies on the sky at such short distances are comparable to the beam size of a single-dish telescope (for example, the $7.0'$ radius of the Parkes beam). Hence the association, if found, could be more definitive as compared to finding host galaxies for more distant FRBs. We did not find any host galaxy associated with six RRATs near the maximum Galactic DM. This result is consistent with the fact that the probability of finding an FRB host galaxy within this volume is also very small. We propose that future follow-up observations of such RRATs be carried out in searching for local host galaxies as well as the sources of FRBs.

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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