The Effelsberg Bonn HI Survey EBHIS

Details The Effelsberg Bonn HI Survey EBHIS The Effelsberg Bonn HI Survey EBHIS

2009-10-08

arxiv.org/abs/0910.1421v1

Proceedings of Science: PoS(PRA2009)062

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

6 pages; contributed talk at the Panoramic Radio Astronomy conference, Groningen, The Netherlands; 2009 June 2-5

Scientific paper

The Effelsberg-Bonn HI Survey (EBHIS) covers the whole sky north of Dec(2000) = -5 deg. on a fully sampled angular grid. Using state-of-the-art FPGA-spectrometers we perform a Milky Way and an extragalactic HI survey in parallel. Moreover, the high dynamic range and short dump time of the HI spectra allow to overcome the vast majority of all radio-frequency-interference (RFI) events. The Milky Way data will be corrected for the stray-radiation bias which warrants a main-beam efficiency of 99%. Towards the whole survey area we exceed the sensitivity limit of HIPASS, while towards the Sloan-Digital-Sky-Survey (SDSS) area EBHIS offers an order of magnitude higher mass sensitivity. The Milky Way data will be a cornerstone for multi-frequency astrophysics, while the extragalactic part will disclose detailed information on the structure formation of the local universe.

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