论文标题
从校准的伽马射线爆发$ e _ {\ rm p} $ - $ e _ {\ rm iso} $相关
Constraints on the transition redshift from the calibrated Gamma-ray Burst $E_{\rm p}$-$E_{\rm iso}$ correlation
论文作者
论文摘要
我们限制了减速 - 加速器时期，即采用校准的$ e _ {\ rm p} $ - $ e _ {\ rm iso} $相关的校准的$ e _ {\ rm p} $ _ {\ rm p} $（grbs）。为此，除了实际数据点外，我们最多使用$ 1000 $模拟的观察性哈勃数据（OHD）点。然后，我们通过良好的固定Bézier多项式技术校准$ e _ {\ rm p} $ - $ e _ {\ rm iso} $相关性，将OHD插入到第二阶。校准GRB数据后，我们考虑了两种cosmographing扩展的策略，即，首先，我们将直接的Hubble速率扩展在$ z_ {tr} $附近进行，然后将减速参数扩展在相同的红移附近的扩展，但订单不同。从蒙特卡洛分析中，我们采用IA类型的超新星，重型声音振荡和GRB数据集，我们推断出$ z_ {tr} $的紧密约束，以及$ z = z_ {tr} $的混蛋参数，即$ j_ {tr} $。我们的结果与以前的结果非常兼容，并确认$λ$ CDM预测，在混蛋参数方面略有不同。在这方面，我们猜想了一致性范式的扩展是可能的，我们将我们的发现与通用暗能量模型提供的期望进行了比较。
We constrain the deceleration-acceleration epoch, namely the transition redshift $z_{tr}$, adopting model-independent techniques that utilize a calibrated $E_{\rm p}$-$E_{\rm iso}$ correlation for gamma-ray bursts (GRBs). To do so, in addition to real data points, we employ up to $1000$ simulated observational Hubble data (OHD) points. We then calibrate the $E_{\rm p}$-$E_{\rm iso}$ correlation by means of the well-consolidate Bézier polynomial technique, interpolating OHD up to the second order. Once GRB data have been calibrated, we consider two strategies of cosmographic expansions, i.e., first we take a direct Hubble rate expansion around $z_{tr}$, and second the expansion of the deceleration parameter around the same redshift, but with a different order. Employing type Ia supernovae, baryonic acoustic oscillations and GRB data sets, from Monte Carlo analyses we infer tight constraints on $z_{tr}$ and the jerk parameters at $z=z_{tr}$, namely $j_{tr}$. Our results are extremely compatible with previous outcomes and confirm the $Λ$CDM predictions, being slightly different in terms of the jerk parameter. In this respect, we conjecture which extensions of the concordance paradigm are possible and we compare our findings with expectations provided by generic dark energy models.
