Effect of supersonic relative motion between baryons and dark matter on collapsed objects

Understand

Great attention is given to the first star formation and the epoch of reionization as main targets of planned large radio interferometries (e.g.

• Square Kilometre Array).
• Recently, it is claimed that the supersonic relative velocity between baryons and cold dark matter can suppress the abundance of first stars and impact the cosmological reionization process.
• Therefore, in order to compare observed results with theoretical predictions it is important to examine the effect of the supersonic relative motion on the small-scale structure formation.