Feasibility Study: Lofar Meridian All-sky Survey (LoMASS)

Details Feasibility Study: Lofar Meridian All-sky Survey (LoMASS) Feasibility Study: Lofar Meridian All-sky Survey (LoMASS)

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21923718g&link_type=abstract

American Astronomical Society, AAS Meeting #219, #237.18

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Scientific paper

LOFAR provides many opportunities to do efficient and sensitive all-sky surveys for pulsars and other steep spectrum fast transients. LOFAR observations of known pulsars reveal a number of sources that show sporadic but bright individual pulses in the 15-80MHz range. Blind searches for new objects exhibiting these properties would probe the sky in a new way and could be very scientifically rewarding. There is also the possibility of finding pulsars that are only visible at very low radio frequency because the emission beam is wider. The feasibility of doing a very low-frequency ( 30MHz) all-sky survey with high time resolution was studied for a pilot project called LoMASS, the LOFAR Meridian All-Sky Survey. An observing configuration comprised of an arc of low-band-antenna station beams aligned along the meridian will be used in order to complete all-sky coverage within 24 hours of observing. Observations of PSR B0809+74 were taken using 1, 8, and 15 station beam configurations. Both 20 minute and 1 hour integration times were tested and the data from the station beams were summed both incoherently and coherently. We report on the results of these initial observations and on our future plans for the survey.

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