%0 Generic %1 li2020cosmologyinsensitive %A Li, Zhengxiang %A Gao, He %A Wei, Jun-Jie %A Yang, Yuan-Pei %A Zhang, Bing %A Zhu, Zong-Hong %D 2020 %K library %T Cosmology-insensitive estimate of IGM baryon mass fraction from five localized fast radio bursts %U http://arxiv.org/abs/2004.08393 %X Five fast radio bursts (FRBs), including three apparently non-repeating ones FRB 180924, FRB 181112, and FRB 190523, and two repeaters, FRB 121102 and FRB 180916.J0158+65, have already been localized so far. We apply a method developed recently by us (Li et al. 2019) to these five localized FRBs to give a cosmology-insensitive estimate of the fraction of baryon mass in the IGM, $f_IGM$. Using the measured dispersion measure (DM) and luminosity distance $d_L$ data (inferred from the FRB redshifts and $d_L$ of type Ia supernovae at the same redshifts) of the five FRBs, we constrain the local $f_IGM = 0.84^+0.16_-0.22$ with no evidence of redshift dependence. This cosmology-insensitive estimate of $f_IGM$ from FRB observations is in excellent agreement with previous constraints using other probes. Moreover, using the three apparently non-repeating FRBs only we get a little looser but consistent result $f_IGM = 0.74^+0.24_-0.18$. In these two cases, reasonable estimations for the host galaxy DM contribution ($DM_host$) can be achieved by modelling it as a function of star formation rate. The constraints on both $f_IGM$ and $DM_host$ are expected to be significantly improved with the rapid progress in localizing FRBs.

@misc{li2020cosmologyinsensitive, abstract = {Five fast radio bursts (FRBs), including three apparently non-repeating ones FRB 180924, FRB 181112, and FRB 190523, and two repeaters, FRB 121102 and FRB 180916.J0158+65, have already been localized so far. We apply a method developed recently by us (Li et al. 2019) to these five localized FRBs to give a cosmology-insensitive estimate of the fraction of baryon mass in the IGM, $f_{\rm IGM}$. Using the measured dispersion measure (DM) and luminosity distance $d_{\rm L}$ data (inferred from the FRB redshifts and $d_{\rm L}$ of type Ia supernovae at the same redshifts) of the five FRBs, we constrain the local $f_{\rm IGM} = 0.84^{+0.16}_{-0.22}$ with no evidence of redshift dependence. This cosmology-insensitive estimate of $f_{\rm IGM}$ from FRB observations is in excellent agreement with previous constraints using other probes. Moreover, using the three apparently non-repeating FRBs only we get a little looser but consistent result $f_{\rm IGM} = 0.74^{+0.24}_{-0.18}$. In these two cases, reasonable estimations for the host galaxy DM contribution (${\rm DM_{host}}$) can be achieved by modelling it as a function of star formation rate. The constraints on both $f_{\rm IGM}$ and ${\rm DM_{host}}$ are expected to be significantly improved with the rapid progress in localizing FRBs.}, added-at = {2020-04-21T07:47:42.000+0200}, author = {Li, Zhengxiang and Gao, He and Wei, Jun-Jie and Yang, Yuan-Pei and Zhang, Bing and Zhu, Zong-Hong}, biburl = {https://www.bibsonomy.org/bibtex/2dd28b3741d877f03f8677ebf9240e979/gpkulkarni}, description = {Cosmology-insensitive estimate of IGM baryon mass fraction from five localized fast radio bursts}, interhash = {b6bf18a4ec24676862e74f3187820244}, intrahash = {dd28b3741d877f03f8677ebf9240e979}, keywords = {library}, note = {cite arxiv:2004.08393Comment: 6 pages, 3 figures, accepted for publication in MNRAS Letters}, timestamp = {2020-04-21T07:47:42.000+0200}, title = {Cosmology-insensitive estimate of IGM baryon mass fraction from five localized fast radio bursts}, url = {http://arxiv.org/abs/2004.08393}, year = 2020 }