%0 Generic %1 zhou2020modelindependent %A Zhou, Meng %A Mao, Yi %A Tan, Jianrong %D 2020 %K library %T A Model-independent Indicator for the Speed of Cosmic Reionization %U http://arxiv.org/abs/2009.02766 %X The antisymmetric part of two-point cross-correlation between intensity maps of the HI 21 cm line and the CO 2.61 mm line has emerged as a new probe of cosmic reionization. In this Letter we demonstrate that the slope of the dipole of HI-CO cross-power spectrum at large scales is linear to the rate of change of global neutral fraction of hydrogen in a model-independent way, until the slope levels out near the end of reionization. The HI-CO dipole, therefore, can be a smoking-gun probe for the speed of reionization, or "standard speedometer". Observations of this new signal will unveil the global reionization history from the midpoint to near the completion of reionization.

@misc{zhou2020modelindependent, abstract = {The antisymmetric part of two-point cross-correlation between intensity maps of the HI 21 cm line and the CO 2.61 mm line has emerged as a new probe of cosmic reionization. In this Letter we demonstrate that the slope of the dipole of HI-CO cross-power spectrum at large scales is linear to the rate of change of global neutral fraction of hydrogen in a model-independent way, until the slope levels out near the end of reionization. The HI-CO dipole, therefore, can be a smoking-gun probe for the speed of reionization, or "standard speedometer". Observations of this new signal will unveil the global reionization history from the midpoint to near the completion of reionization.}, added-at = {2020-09-08T09:30:07.000+0200}, author = {Zhou, Meng and Mao, Yi and Tan, Jianrong}, biburl = {https://www.bibsonomy.org/bibtex/26fc623f5d54bd6ff224f71befddd8ca5/gpkulkarni}, description = {A Model-independent Indicator for the Speed of Cosmic Reionization}, interhash = {26036e1dd0f85c1dfa92b447824f6131}, intrahash = {6fc623f5d54bd6ff224f71befddd8ca5}, keywords = {library}, note = {cite arxiv:2009.02766Comment: 4 pages, 5 figures, 1 table}, timestamp = {2020-09-08T09:30:07.000+0200}, title = {A Model-independent Indicator for the Speed of Cosmic Reionization}, url = {http://arxiv.org/abs/2009.02766}, year = 2020 }