%0 Generic %1 padmanabhan2015measuring %A Padmanabhan, Hamsa %A Srianand, R. %A Choudhury, T. Roy %D 2015 %K curvature equation igm method state %T Measuring the equation of state of the high-z intergalactic medium using curvature statistics %U http://arxiv.org/abs/1502.05140 %X Using hydrodynamical simulations, we explore the use of the mean and percentiles of the curvature distribution function to recover the equation of state of the high-$z$ ($2 < z < 4$) intergalactic medium (IGM). We find that the mean and percentiles of the absolute curvature distribution exhibit tight correlation with the temperatures measured at respective characteristic overdensities $\Delta_i$'s at each redshift. Hence, they provide nearly independent probes of the same underlying temperature-density distribution, and can in principle be used to simultaneously recover both parameters $T_0$ and $\gamma$ of the IGM effective equation of state. We quantify the associated errors in the recovered parameters $T_0$ and $\gamma$ from the intrinsic scatter in the characteristic overdensities and the uncertainties in the curvature measurement.

@misc{padmanabhan2015measuring, abstract = {Using hydrodynamical simulations, we explore the use of the mean and percentiles of the curvature distribution function to recover the equation of state of the high-$z$ ($2 < z < 4$) intergalactic medium (IGM). We find that the mean and percentiles of the absolute curvature distribution exhibit tight correlation with the temperatures measured at respective characteristic overdensities $\bar{\Delta}_i$'s at each redshift. Hence, they provide nearly independent probes of the same underlying temperature-density distribution, and can in principle be used to simultaneously recover both parameters $T_0$ and $\gamma$ of the IGM effective equation of state. We quantify the associated errors in the recovered parameters $T_0$ and $\gamma$ from the intrinsic scatter in the characteristic overdensities and the uncertainties in the curvature measurement.}, added-at = {2015-02-19T09:45:04.000+0100}, author = {Padmanabhan, Hamsa and Srianand, R. and Choudhury, T. Roy}, biburl = {https://www.bibsonomy.org/bibtex/206ae07bbc217b7ff01136130634d6f19/miki}, description = {[1502.05140] Measuring the equation of state of the high-z intergalactic medium using curvature statistics}, interhash = {65dd326b59203e0a7df2c65424c79b66}, intrahash = {06ae07bbc217b7ff01136130634d6f19}, keywords = {curvature equation igm method state}, note = {cite arxiv:1502.05140Comment: 5 pages, 4 figures, 1 table}, timestamp = {2015-02-19T09:45:12.000+0100}, title = {Measuring the equation of state of the high-z intergalactic medium using curvature statistics}, url = {http://arxiv.org/abs/1502.05140}, year = 2015 }