Elusive evidence of neutral hydrogen in the distant Universe

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

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

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....

Shockwaves of galaxy cluster merger seen as bridge in radio data

As part of S-PASS (S-band Polarization All Sky Survey), a single-dish survey of the total intensity and polarised continuum emission of the entire southern sky, observations at 2.3 GHz with the Parkes Radio Telescope have now revealed a ‘bridge’ of unpolarised...

CAASTRO investigators recognised in Australia Day 2013 Honours

The Governal-General of Australia announced that two CAASTRO investigators have been recognised in the Australia Day 2013 Honours List: COMPANION (AC) IN THE GENERAL DIVISION OF THE ORDER OF AUSTRALIA to Professor Brian Paul SCHMIDT of Sutton, New South Wales,...