Latest research from HIJASS

Science Results from the
 survey, including papers

Details of upcoming and
 past observing runs

Details of forthcoming
 and previous follow-up observations

Observing and data
 reduction documentation

Survey information for HIJASS
 team members (password required)

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Maintained by: Virginia Kilborn
Last Updated: 22 August 2001


The HI Jodrell All Sky Survey (HIJASS) uses a 4 beam 'multibeam' system mounted on the Lovell Telescope. The multibeam
 receiver being hoisted into the Lovell telescope focus box The system and back end were built in collaboration with the Australia Telescope National Facility (ATNF). The multibeam system had commisioning tests in mid 1999, and the first HIJASS data was taken in 2000. The survey is a blind survey of the 21cm line, with a velocity range of -3000 km/s to 10,000 km/s. The aim is to cover the whole of the northern sky (north of +25 degrees declination) to a similar sensitivity as the southern HIPASS survey. The approximate RMS level of the final data is 15 mJy/beam (compared to 13 mJy/beam for HIPASS).

Data reduction uses the AIPS++ reduction package, and in particular the bandpass removal program livedata, and gridding software gridzilla.

Observing Strategy

The survey is carried out using central declination bands separated by 8 degrees as the center. The telescope scans in declination, making 8 degree strips that are the width of the multibeam receiver. The telescope is then slightly offset, and scans are made to 'fill in the gaps'.

Survey Members

Cardiff University:
  • Mike Disney (PI)
  • Marco Grossi (PhD Student)
  • Diego Garcia (PhD Student)
  • Robert Lang (Engineering)
  • Robert Minchin (PDRA)
University of Bristol:
  • Peter Boyce (PDRA)
Jodrell Bank Observatory:
  • Christine Jordan (Computer Engineering)
  • Virginia Kilborn (PDRA)