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Proposal Identication No.: P1688 Date Received: 2002-Jun-01 18:13:41
Technical Page
Proposal Type: Regular
General Category: Pulsars
Sub-Category: Continuum
Observation Category: Galactic
Total Time Requested: 15 Hours
Proposal Title: TIMING AND POLARIMETRY OF THE NEWLY DISCOVERED YOUNG
PULSAR J2021+3651
ABSTRACT:
PSR J2021+3651 is a 104-ms pulsar discovered in observations made by our group in the recent Arecibo proposal
P1556. This pulsar will be highlighted in a discovery paper we have submitted to the Astrophysical Journal
Letters (Roberts et al. 2002). We now request 15 hours of telescope time during the next year to determine a
timing solution for this pulsar and to perform polarimetry. PSR J2021+3651 is a young ( c  17 kyr) and
energetic (3:4  10 36 ergs/s) pulsar whose position, currently known only to within the Arecibo beam width, is
consistent with the position of the hard X-ray source AX J2021.1+3651 and the error box of the EGRET -ray
source GeV 2020+3658. The dispersion measure DM = 371 pc cm 3 is by far the highest of any observed pulsar in
the Galactic longitude range 55 ф < l < 80 ф . This DM suggests a distance d > 10 kpc, and a high -ray eфciency
of  15%. Timing of PSR J2021+3651 will improve our values of period and period derivative, provide a precise
position, and will allow us to search for glitches. Polarimetry will show if, like other young pulsars, this pulsar has
a high degree of linear polarization, and may help constrain the distance.
Name Institution E-mail Phone Student
Mallory S.E. Roberts McGill University roberts@physics.mcgill.ca 514-398-6520 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 L-wide S-low
Atmospheric Observation Instruments:
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Special Equipment or setup: none
RFI Considerations
Frequency Ranges Planned
1350 - 1475
This proposal requires coordination with Punta Salinas radar within the band 1222-1381 MHz..
This proposal requires coordination with GPS L3 at 1381 MHz.
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