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NAM2012 - All Presentation Details

Record 307 of 756

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Early Pulsar Science with LOFAR

Author: Tom Hassall

University of Southampton

Co-Authors: Ben Stappers (University of Manchester) and the LOFAR Pulsar Working Group (various institutions)

Session: INS4: LOFAR, the LOw Frequency ARray: Ongoing Developments and Early Results

Presentation type: Talk      12:37  Thursday 29th 11:45-13:15 

Summary:

LOFAR is revolutionising the observation of pulsars at the lowest radio frequencies. At low frequencies, pulsed signals are especially prone to propagation effects like dispersion, scattering and refraction. Through wide-band pulsar observations, these propagation effects can be used to probe, e.g., the interstellar medium and the pulsar magnetosphere. LOFAR's large fractional bandwidth also means that pulse profile shapes change significantly across the observing band. Observations of this pulse profile evolution can be used to glean information about the pulsar magnetosphere, and the pulsar emission mechanism. LOFAR is also an excellent wide-field pulsar survey instrument. For instance, at it's lowest frequencies, LOFAR can complete a shallow survey of the entire Northern sky (560 pointings at 50 MHz with 60-minute integration times) in 25 days. I will summarise these topics and give highlights of early pulsar results from LOFAR's ongoing commissioning period.

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