Elusive evidence of neutral hydrogen in the distant Universe

Mar 25, 2013

Continuing their studies of cool neutral hydrogen gas – the fuel for star formation – in the distant Universe, the research team around CAASTRO researcher Stephen Curran has succeeded in detecting the signal of HI absorption at the third highest redshift reported to...

Simulations suggest importance of X-rays in cosmic reionisation

Mar 17, 2013

In their 2009 paper in MNRAS, CAASTRO Associate Investigator Chris Power and his European colleagues started exploring the way in which high-mass X-ray binaries in primordial globular clusters could boost the ionising power of these clusters. The team now has a new...

Broadest ever absorption line shows cold HI speeding towards AGN

Feb 13, 2013

Observations of the compact radio source PMN J2054-4242 with the 6-dish Australian Telescope Compact Array (ATCA) and its Broadband Backend (CABB) have now revealed the broadest and weakest absorption line of cold neutral hydrogen gas at 21cm yet detected....