论文标题
通过高斯工艺重建带有快速无线电爆发的巴晶介质中的重建桶的比例
Reconstructing the Fraction of Baryons in the Intergalactic Medium with Fast Radio Bursts via Gaussian Processes
论文作者
论文摘要
快速无线电爆发（FRB）是对天文学和宇宙学的有前途的新调查。得益于它们的外层状和宇宙学的起源，FRB可用于研究播层间培养基（IGM）和宇宙扩张。预计，通过识别宿主星系或同行，将在不久的将来提供许多带有红移的FRB。 $ \ rm dm_ {igm} $是IGM对FRB观察到的色散度量（DM）的贡献，它包含有关IGM和宇宙扩展历史记录的关键信息。因此，我们可以通过使用具有鉴定的红移的FRB来研究宇宙的演变。在目前的工作中，我们对Igm中的Baryon质量的比例感兴趣，$ f _ {\ rm Igm} $，这对于研究宇宙扩张和“缺失的Baryons”的问题很有用。我们建议通过完全独立的方法（即高斯流程）重建$ f _ {\ rm igm} $作为红移$ z $的函数。由于没有大量的带有已识别红移的FRB样本，因此我们使用模拟的FRB。通过各种模拟，我们表明该方法效果很好。
Fast radio bursts (FRBs) are a promising new probe for astronomy and cosmology. Thanks to their extragalactic and cosmological origin, FRBs could be used to study the intergalactic medium (IGM) and the cosmic expansion. It is expected that numerous FRBs with identified redshifts will be available in the near future through the identification of their host galaxies or counterparts. $\rm DM_{IGM}$, the contribution from IGM to the observed dispersion measure (DM) of FRB, carries the key information about IGM and the cosmic expansion history. We can thus study the evolution of the universe by using FRBs with identified redshifts. In the present work, we are interested in the fraction of baryon mass in the IGM, $f_{\rm IGM}$, which is useful to study the cosmic expansion and the problem of the "missing baryons". We propose to reconstruct the evolution of $f_{\rm IGM}$ as a function of redshift $z$ with FRBs via a completely model-independent method, namely Gaussian processes. Since there is not a large sample of FRBs with identified redshifts, we use simulated FRBs instead. Through various simulations, we show that this methodology works well.
