Speaker
Description
In the standard model of structure formation (i.e., ΛCDM), large relative velocities between baryons and dark matter are predicted at the time of recombination. These velocities cause the formation of Supersonically Induced Gas Objects, or SIGOs. SIGOs are a natural consequence of ΛCDM structure formation. In particular, they are characterized by low dark matter abundances and metallicities, and have been suggested as a progenitor candidate for globular clusters (GCs). In this talk, I will show that the abundance of SIGOs in the early Universe in ΛCDM is comparable to the abundance of present-day GCs, and that SIGOs likely formed in our local group. Further I’ll demonstrate how these objects can regularly form stars. Finally, because SIGOs are a natural consequence of structure formation, I would suggest that future JWST detections can serve as a test to ΛCDM.
