Insights from probability distribution functions of intensity maps
Insights from probability distribution functions of intensity maps
复制标题
强度图概率分布函数的见解
DOI:
10.1093/mnras/stx203
复制
发表时间:
2016
影响因子:
4.8
通讯作者:
M. Kamionkowski
中科院分区:
文献类型:
--
作者:
P. Breysse;E. Kovetz;P. Behroozi;L. Dai;M. Kamionkowski
In the next few years, intensity-mapping surveys that target lines such as CO, Ly$\alpha$, and CII stand to provide powerful probes of high-redshift astrophysics. However, these line emissions are highly non-Gaussian, and so the typical power-spectrum methods used to study these maps will leave out a significant amount of information. We propose a new statistic, the probability distribution of voxel intensities, which can access this extra information. Using a model of a CO intensity map at $z\sim3$ as an example, we demonstrate that this voxel intensity distribution (VID) provides substantial constraining power beyond what is obtainable from the power spectrum alone. We find that a future survey similar to the planned COMAP Full experiment could constrain the CO luminosity function to order $\sim10\%$. We also explore the effects of contamination from continuum emission, interloper lines, and gravitational lensing on our constraints and find that the VID statistic retains significant constraining power even in pessimistic scenarios.
影响因子:
6.5
作者:
Ade, P. A. R.;Aghanim, N.;Zonca, A.
通讯作者:
Zonca, A.
影响因子:
6.5
作者:
van Haarlem, M. P.;Wise, M. W.;van Zwieten, J.
通讯作者:
van Zwieten, J.
DOI:
10.1088/1538-3873/129/974/045001
发表时间:
2017-04-01
影响因子:
3.5
作者:
DeBoer, David R.;Parsons, Aaron R.;Zheng, Haoxuan
通讯作者:
Zheng, Haoxuan