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Parkes observations for project P996 semester 2019APRS_01

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Title Parkes observations for project P996 semester 2019APRS_01
 
Creator Jinlin Han
 
Subject Astronomical and Space Sciences not elsewhere classified
 
Description We propose to measure the polarisation of 107 southern pulsars (distance>5kpc. 77 in this semester)
using the Ultra-Wideband Low (UWL) receiver to investigate the structure of the Galactic
disk magnetic field in and between distant spiral arms. Previous Parkes pulsar observations
have revealed field reversals in nearby arm and interarm regions. We wish to exploit the
greater sensitivity of the UWL receive r to extend this to more distant regions, thereby allowing
us to distinguish more clearly between different models for the structure of the disk field.
Because of the intrinsic uncertainty in DM-based pulsar distances, averaging data over groups
of pulsars is necessary to confidently demonstrate any magnetic-field reversals.
This work will have important implications for theories for the generation of Galactic magnetic
fields and for other areas, e.g., cosmic-ray physics, which depend on a knowledge of the
large-scale Galactic magnetic field for their interpretation.
 
Publisher CSIRO
 
Contributor Dick Manchester
George Hobbs
Willem van Straten
 
Date 2019-04-26
 
Type —
 
Format —
 
Identifier csiro:39570
 
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