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Proposal Identification No.:

P2991

Date Received:

2015-Mar-02 16:05:40

Technical Page
This proposal has been submitted before. The previous proposal number is P2947. Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: Regular Pulsars Galactic 16.25 Hours 1 hour

PSR J2045+3633: A pulsar - massive WD system with an unusually eccentric

orbit
ABSTRACT:
PSR J2045+3633 is a new 31.7 ms pulsar with a companion which is likely a massive WD and an orbital period of 32 days. Its expected timing precision with Arecibo is 0.3 us every 30 minutes, making it a likely NANOGrav target. The orbital eccentricity, 0.017, is the largest observed among these systems, and will eventually allow a very precise measurement of the rate of advance of periastron. This will, within a year, yield a very precise measurement of the total mass of the binary. In order to be able to determine the masses of the two individual components, we will need to measure some other post-Keplerian effect in the orbit. In this proposal, we request time for 12 observations in a single orbit (i.e., a timing campaign) to measure precisely the Shapiro delay. This will yield very precise masses for both components in the system almost irrespective of the orbital inclination of the system.

Name Paulo C Freire

Institution Max Planck Institute for Radio Astronomy

E-mail pfreire@mpifr-bonn.mpg.de

Phone +49 228525496

Student no

Remote Observing Request

Observer will travel to AO X Remote Observing In Absentia (instructions to operator)

Instrument Setup
430 G L-wide 327 S-high

Atmospheric Observation Instruments:

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Sp ecial Equipment or setup:

none

RFI Considerations Frequency Ranges Planned
295-359 422-442 1130-1730 3000-4000 This proposal requires Iridium RFI protection at 1612 MHz between 10pm and 6am EST. 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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