SEARCHES FOR PROMPT RADIO EMISSION AT 151 MHZ FROM THE GAMMA-RAY BURSTS GRB 950430 AND GRB 950706
SEARCHES FOR PROMPT RADIO EMISSION AT 151 MHZ FROM THE GAMMA-RAY BURSTS GRB 950430 AND GRB 950706
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搜索伽玛射线暴 GRB 950430 和 GRB 950706 的 151 MHZ 瞬发无线电发射
DOI：
10.1093/mnras/281.3.977
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发表时间：
1996
影响因子：
4.8
通讯作者：
C. Meegan
中科院分区：
文献类型：
--
作者：
C. Dessenne;D. Green;P. J. Warner;D. Titterington;E. Waldram;S. Barthelmy;P. Butterworth;T. Cline;N. Gehrels;D. Palmer;G. Fishman;C. Kouveliotou;C. Meegan
剑桥低频合成望远镜（CLFST）被用于寻找康普顿γ射线天文台的γ射线暴和瞬变源实验（BATSE）探测到的151 MHz的瞬发射电辐射。CLFST进行了重新配置，使它可以达到1.5分钟内的天空的10%。实时跟踪观测的GRB 950430和GRB 950706这里提出的任何无线电脉冲匹配的GRB持续时间的通量密度提供深上限。对于GRB 950430，在爆发前280分钟至爆发后6分钟，（3σ）极限为73 Jy，在爆发后6分钟至145分钟，（3 σ）极限为35 Jy。对于GRB 950706，在爆发后16至60分钟内的限值为16 Jy。假设是热射电谱，我们在GRB 950430之后6 ~ 145分钟的时间范围内，得出射电与γ射线亮度之比的上限为103 × 10− 4。此外，我们还寻找了伽玛暴950430领域的3小时后的伽玛暴的变量源：没有发现新的源的通量密度超过1 Jy。
The Cambridge Low Frequency Synthesis Telescope (CLFST) has been used to search for prompt radio emission at 151 MHz from gamma-ray bursts (GRBs) detected by the Burst And Transient Source Experiment (BATSE) aboard theCompton Gamma-Ray Observatory. The CLFST was reconfigured so that it can reach ∼ 10 per cent of the sky in 1.5 min. The real-time follow-up observations of GRB 950430 and GRB 950706 presented here provide deep upper limits on the flux density of any radio pulse matching the GRB duration. For GRB 950430 the (3σ) limits are 73 Jy for the period from 280 minbeforeto 6 minafterthe burst, and 35 Jy for the period 6 to 145 min after the burst. For GRB 950706 the limit is 16 Jy for the period 16 to 60 min after the burst. Assuming a thermal radio spectrum, our limits for the period 6 to 145 min following GRB 950430 yield an upper limit of ∼ 3 × 10−4for the ratio of the radio to the γ-ray luminosity of this burst. In addition we have looked for variable sources in the field of GRB 950430 for the 3 h following the GRB: no new source with a flux density above 1 Jy was found.