GRB host galaxies with strong H${}_2$ absorption: CO-dark molecular gas at the peak of cosmic star formation

K. E. Heintz, G. Björnsson, M. Neeleman +13

We present a pilot search of CO emission in three H${}_2$-absorbing, long-duration gamma-ray burst (GRB) host galaxies at z~2-3. We used the Atacama Large Millimeter/sub-millimeter A…