Li Longbiao1; Huang Yongfeng1; Zhang Zhibin2; Li Di3; Li Bing1
Source Publicationresearchinastronomyandastrophysics
AbstractFast radio bursts (frbs) are intense radio flashes from the sky that are characterized by millisecond durations and jansky-level flux densities. we carried out a statistical analysis on frbs that have been discovered. their mean dispersion measure, after subtracting the contribution from the interstellar medium of our galaxy, is found to be similar to 660 pc cm(3), supporting their being from a cosmological origin. their energy released in the radio band spans about two orders of magnitude, with a mean value of similar to 10(39) erg. more interestingly, although the study of frbs is still in a very early phase, the published collection of frbs enables us to derive a useful intensity distribution function. for the 16 non-repeating frbs detected by the parkes telescope and the green bank telescope, the intensity distribution can be described as dn/df(obs) = (4.1 +/- 1.3) x 10(3) f-obs(-1.1 +/- 0.2) sky(-1)d(-1), where f-obs is the observed radio fluence in units of jy ms. here the power-law index is significantly flatter than the expected value of 2.5 for standard candles distributed homogeneously in a flat euclidean space. based on this intensity distribution function, the five-hundred-meter aperture spherical radio telescope (fast) is predicted to be able to detect about five frbs for every 1000 h of observation time.
Document Type期刊论文
Recommended Citation
GB/T 7714
Li Longbiao,Huang Yongfeng,Zhang Zhibin,et al. intensitydistributionfunctionandstatisticalpropertiesoffastradiobursts[J]. researchinastronomyandastrophysics,2017,17(1):10.
APA Li Longbiao,Huang Yongfeng,Zhang Zhibin,Li Di,&Li Bing.(2017).intensitydistributionfunctionandstatisticalpropertiesoffastradiobursts.researchinastronomyandastrophysics,17(1),10.
MLA Li Longbiao,et al."intensitydistributionfunctionandstatisticalpropertiesoffastradiobursts".researchinastronomyandastrophysics 17.1(2017):10.
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