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Proposal Identification No.: P2068 Date Received: 2005­Feb­01 11:09:13
Technical Page
Proposal Type: Regular
General Category: Pulsars
Observation Category: Galactic
Total Time Requested: 18 Hours
Proposal Title: High­precision timing of two recycled pulsars
ABSTRACT:
We request 18 hours of observing time to continue regular timing observations of two recycled pulsars spanning a
12­month baseline. Timing observations of the relativistic binary pulsar J1829+2456 have so far determined a
minimum companion mass of 1.22 Msun which makes it likely that the companion is a neutron star. Continued
timing of J1829+2456 will allow the geometry of the system to be determined by measuring the relativistic
time­dilation and gravitational redshift parameter, gamma. Measurements of the proper motion of both
J1829+2456 and J1944+0907 will allow their intrinsic Pdots to be determined. This will provide constraints on the
birth spin period and the kick produced during the supernova.
Name Institution E­mail Phone Student
David J Champion Jodrell Bank champion@jb.man.ac.uk +44 1477 57
1321
G
Service Observing Request Remot e Observing Request
X None No
All of the observing run. Maybe
Part of the observing run. X Yes
Queue Observing
Instrument Setup
430 G L­wide 327
Atmospheric Observation Instruments:
Special Equipment or setup: none
RFI Considerations
Frequency Ranges Planned
1

1200 ­ 1600
425 ­ 435
310 ­ 340
2