Removing Astrophysics in 21 cm maps with Neural Networks

Understand

Measuring temperature fluctuations in the 21 cm signal from the Epoch of Reionization and the Cosmic Dawn is one of the most promising ways to study the Universe at high redshifts.

• Unfortunately, the 21 cm signal is affected by both cosmology and astrophysics processes in a non-trivial manner.
• We run a suite of 1,000 numerical simulations with different values of the main astrophysical parameters.
• From these simulations we produce tens of thousands of 21 cm maps at redshifts $10\leq z\leq 20$.