Robust Intensity Mapping Analysis against Foregrounds for the Epoch of Reionization

Understand

Intensity mapping of the HI 21 cm line and the CO 2.61 mm line from the epoch of reionization has emerged as powerful, complementary, probes of the high-redshift Universe.

• However, both maps and their cross-correlation are dominated by foregrounds.
• We propose a new analysis by which the signal is unbiased by foregrounds, i.e.
• it can be measured without foreground mitigation.