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P1639 2002-Feb-01 16:28:27
Technical Page
Proposal Type: Regular
General Category: Pulsars
Observation Category:
Total Time Requested: 69 Hours
Proposal Title: Conal Beam Rotation and the Problems of Nulling, Drifting and Mode Changing
ABSTRACT:
We request time for pulse-sequence polarimetry of a group of some 50 pulsars, which have received little study at
all or little study within the last decade. Most of the pulsars will be observed at 430 MHz, though a few require
dierent frequencies. We will focus on obtaining observations which are well suited for the study of pulse nulling
characteristics in relation to the subpulse modulation and mode-changing properties of the adjacent periods. Our
focus is on a set of AO-visible stars which are not among the brightest, so the AO will be used to obtain a level of
quality unachievable elsewhere, though we have also included some compatible observations aimed at specic but
slightly dierent objectives. We expect that our observations will produce a high quality set of observations useful
for a variety of purposes for many years.
Name Institution E-mail Phone Student
Joanna M Rankin University of Ver-
mont
rankin@hbar.physics.uvm.edu 802-656-0051 no
Service Observing Request Remot e Observing Request
X None No
All of the observing run. X Maybe
Part of the observing run. Yes
Queue Observing
Instrument Setup
430 G 610 L-wide 327
Atmospheric Observation Instruments:
Special Equipment or setup: The WAPP and suitable recording media will be required.
RFI Considerations
Frequency Ranges Planned
1

320-335
425-435
1120-1220
This proposal requires coordination with Punta Salinas radar within the band 1222-1381 MHz..
This proposal requires coordination with AFTWF within the band 425-435 MHz.
2