使用YNAO 40米射电望远镜搜索与伽马射线暴相关的快速射电暴

IF 0.8 4区物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS

Serbian Astronomical Journal Pub Date : 2023-01-01 DOI:10.2298/saj2306039z

Y.F. Zhang, Z. Wen, N. Wang, L. Hao, J. Yuan, R. Yuen, X. Duan, Z. Wang

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引用次数: 0

摘要

本文报道了云南天文台40米射电望远镜在2256 MHz波段对3个伽玛射线暴(GRBs)的快速射电暴(FRBs)的搜索结果。对信号的搜索是由雨燕卫星上的突发警报望远镜(BAT)触发的。在0 ~ 5000pc /cm3的大色散测量范围内，以50pc /cm3的步进搜索射电单脉冲数据。在grb的提示阶段没有检测到类似frb的辐射，具有显著性bbbb50 ?如果存在与grb相关的快速射电暴，我们根据望远镜的灵敏度将GRB140512A的射电脉冲ux密度上限设定为2.5 Jy, grb140629a和140703A的射电脉冲ux密度上限设定为8.0 Jy。对GRB数据的统计分析表明，探测到的事件高于5?与热噪声波动一致。

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A search for fast radio bursts associated with gamma-ray bursts using the YNAO 40-m radio telescope

We report on the search results of Fast Radio Bursts (FRBs) from three Gamma- ray Bursts (GRBs) at 2256 MHz using the 40-m radio telescope located at the YunNan Astronomical Observatory (YNAO). The search for signals was triggered by the Burst Alert Telescope (BAT) on- board the Swift satellite. Radio single pulses are searched in the data over a large range of dispersion measure from 0 to 5000 pc/cm3 in step of 50 pc/cm3. No FRB-like emission from the prompt phase of GRBs are detected with significance > 5?. If there are FRBs related to the GRBs, we set an upper limit on the ux density of radio pulses of 2.5 Jy for GRB140512A and 8.0 Jy for GRBs 140629A and 140703A with the sensitivity of the telescope. A statistical analysis of the GRB data reveals that the events detected above 5? are consistent with the thermal noise uctuations.

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来源期刊

Serbian Astronomical Journal ASTRONOMY & ASTROPHYSICS-

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

12 weeks

期刊介绍： Serbian Astronomical Journal publishes original observations and researches in all branches of astronomy. The journal publishes: Invited Reviews - review article on some up-to-date topic in astronomy, astrophysics and related fields (written upon invitation only), Original Scientific Papers - article in which are presented previously unpublished author''s own scientific results, Preliminary Reports - original scientific paper, but shorter in length and of preliminary nature, Professional Papers - articles offering experience useful for the improvement of professional practice i.e. article describing methods and techniques, software, presenting observational data, etc. In some cases the journal may publish other contributions, such as In Memoriam notes, Obituaries, Book Reviews, as well as Editorials, Addenda, Errata, Corrigenda, Retraction notes, etc.