搜索提示伽玛射线对应物在Insight-HXMT数据中快速无线电爆发

论文标题

搜索提示伽玛射线对应物在Insight-HXMT数据中快速无线电爆发

A search for prompt gamma-ray counterparts to fast radio bursts in the Insight-HXMT data

论文作者

Guidorzi, C., Marongiu, M., Martone, R., Nicastro, L., Xiong, S. L., Liao, J. Y., Li, G., Zhang, S. N., Amati, L., Frontera, F., Orlandini, M., Rosati, P., Virgilli, E., Zhang, S., Bu, Q. C., Cai, C., Cao, X. L., Chang, Z., Chen, G., Chen, L., Chen, T. X., Chen, Y. B., Chen, Y. P., Cui, W., Cui, W. W., Deng, J. K., Dong, Y. W., Du, Y. Y., Fu, M. X., Gao, G. H., Gao, H., Gao, M., Ge, M. Y., Gu, Y. D., Guan, J., Guo, C. C., Han, D. W., Huang, Y., Huo, J., Jia, S. M., Jiang, L. H., Jiang, W. C., Jin, J., Jin, Y. J., Kong, L. D., Li, B., Li, C. K., Li, M. S., Li, T. P., Li, W., Li, X., Li, X. B., Li, X. F., Li, Y. G., Li, Z. W., Liang, X. H., Liu, B. S., Liu, C. Z., Liu, G. Q., Liu, H. W., Liu, X. J., Liu, Y. N., Lu, B., Lu, F. J., Lu, X. F., Luo, Q., Luo, T., Ma, R. C., Ma, X., Meng, B., Nang, Y., Nie, J. Y., Oui, G., Qu, J. L, Sai, N., Shang, R. C., Song, L. M., Song, X. Y., Sun, L., Tani, Y., Tao, L., Tuo, Y. L., Wang, C., Wang, G. F., Wang, J., Wang, W. S., Wang, Y. S., Wen, X. Y., Wu, B. Y., Wu, B. B., Wu, M., Xiao, G. C., Xiao, S., Xu, Y. P., Yang, J. W., Yang, S., Yang, Y. J., Yi, Q. B., Yin, Q. Q., You, Y., Zhang, A. M. Zhang C. M., Zhang, F., Zhang, H. M., Zhang, J., Zhang, T., Zhang, W. C., Zhang, W., Zhang, W. Z., Zhang, Y., Zhang, Y. F., Zhang, Y. J., Zhang, Y., Zhang, Z., Zhang, Z., Zhang, Z. L., Zhang, H. S., Zhang, X. F., Zheng, S. J., Zhou, D. K., Zhou, J. F., Zhu, Y. X., Zhu, Y., Zhuang, R. L.

论文摘要

尽管迄今进行了几次多波长搜索，但仍未获得对快速无线电爆发（FRB）的迅速电磁对应物的强大检测。具体而言，某些模型预测了X/Gamma射线对应物。我们计划在洞察力X射线调制望远镜（Insight-HXMT）数据中搜索及时的伽马射线对应物，利用了在KEV-MEV能量范围内和亚MS时间分辨率的较大有效面积的独特组合。我们选择了39个FRB，这些FRB在Insight-HXMT上迅速从高能（HE）仪器中看到。在计算航天器位置的预期到达时间之后，我们在广泛的时间分辨率上搜索了个体和累积时间概况的显着过剩，从几秒钟到下降到亚MS尺度。使用超过银河系的色散度量，我们估计了红移的上限。找不到令人信服的信号，对于每个FRB，我们限制了伽马射线各向同性 - 等效性的光度，而释放的能量是发射时间尺度的函数。对于最近的FRB来源，定期转发器FRB180916.J0158+65，我们发现$ l_ {γ，ISO} <5.5 \ times 10^{47} $ erg/s超过1 s，而$ l_则$ l_ {γ，ISO}，ISO} <10^{49} <49} {49} {49} {49} -10^forbul ung/s forbul。对于MS长发射，相同的值扩大了约100倍。即使在与无线电脉冲本身相当的时间尺度上，也没有观察到KeV-MEV发射。除了过高的事件外，与长或短grb的系统关联被排除在很高的置信度之外，就像大型恒星（长）或二进制中子恒星合并（短）的核心爆发情况一样。对于最近的FRB，仅排除了与银河系兄弟姐妹的能量至少十倍的巨大耀斑。

No robust detection of prompt electromagnetic counterparts to fast radio bursts (FRBs) has yet been obtained, in spite of several multi-wavelength searches carried out so far. Specifically, X/gamma-ray counterparts are predicted by some models. We planned on searching for prompt gamma-ray counterparts in the Insight-Hard X-ray Modulation Telescope (Insight-HXMT) data, taking advantage of the unique combination of large effective area in the keV-MeV energy range and of sub-ms time resolution. We selected 39 FRBs that were promptly visible from the High-Energy (HE) instrument aboard Insight-HXMT. After calculating the expected arrival times at the location of the spacecraft, we searched for a significant excess in both individual and cumulative time profiles over a wide range of time resolutions, from several seconds down to sub-ms scales. Using the dispersion measures in excess of the Galactic terms, we estimated the upper limits on the redshifts. No convincing signal was found and for each FRB we constrained the gamma-ray isotropic-equivalent luminosity and the released energy as a function of emission timescale. For the nearest FRB source, the periodic repeater FRB180916.J0158+65, we find $L_{γ,iso}<5.5\times 10^{47}$ erg/s over 1 s, whereas $L_{γ,iso}<10^{49}-10^{51}$ erg/s for the bulk of FRBs. The same values scale up by a factor of ~100 for a ms-long emission. Even on a timescale comparable with that of the radio pulse itself no keV-MeV emission is observed. A systematic association with either long or short GRBs is ruled out with high confidence, except for subluminous events, as is the case for core-collapse of massive stars (long) or binary neutron star mergers (short) viewed off axis. Only giant flares from extra-galactic magnetars at least ten times more energetic than Galactic siblings are ruled out for the nearest FRB.

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