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Proposal Identification No.:

P2823 Arecibo Observatory

Date Received: 2013-Mar-01 17:54:28 William E. Gordon Telescope Observing Time Request COVER SHEET

Section I - General Information
Submitted for Mar 1 2013. This proposal has not been submitted before. Proposal Type: General Category: Observation Category: Time Requested this semester: Hours Next Semester: Hours already used for this pro ject: Additional Hours required to complete pro ject: Minimum Useful Time: Expected Data Storage: Prop osal Title: ABSTRACT: Regular Pulsars Galactic 19.5 9

90 less than 100 GB

Timing of New Pulsars Recently Discovered by PALFA

We request a total of 28.5 hours over the course of a year (19.5 in the Fall, 9 in the Spring) to derive precision timing solutions for 6 pulsars discovered in the PALFA survey in the last 6 months, in order to determine spin and binary parameters, and hence fundamental properties such as ages, magnetic fields, and spin-down luminosities. Two of the pulsars are binary millisecond pulsars, each with particular science potential, two are transient emitters (RRATs)and two are ordinary pulsars vital for population and Galactic studies. Outreach Abstract: Pulsars, the rapidly rotating, highly magnetized, ultra-dense remnants of massive stars, are neutron stars that can be used as extremely stable astronomical clocks. This pro ject will observe 6 such stars, situated thousands of light-years away, that were recently discovered by the ALFA pulsar survey. These observations will permit us to account for our target pulsars' every rotation (up to hundreds per second). The exceptionally precise models to be derived will allow us to estimate the pulsars' basic parameters, such as their ages, magnetic field strengths and in some cases orbital parameters. Our models might allow us to use some of these ob jects as celestial laboratories to test Einstein' s theory of General Relativity as well as study nuclear physics. The pulsars will also help us study the structure of the Milky Way, how stars evolve and die, and the population of neutron stars as a whole.

Name Ingrid H Stairs Robert D Ferdman

Institution University of British Columbia McGill University

E-mail stairs@astro.ubc.ca rferdman@physics.mcgill.ca

Phone 604-822-6796 514-398-6820

Student no no

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Additional Authors
B. Allen bruce.allen@aei.mpg.de S. Bogdanov slavko@astro.columbia.edu A. Bouchard antoinebouchard1@gmail.com A. Brazier abrazier@astro.cornell.edu F. Camilo camilo@naic.edu S. Chatterjee shami@astro.cornell.edu J. Cordes cordes@astro.cornell.edu F. Crawford fcrawfor@fandm.edu J. Deneva deneva@naic.edu G. Desvignes gdesvignes@mpifr-bonn.mpg.de P. Freire pfreire@mpifr-bonn.mpg.de J. Hessels J.W.T.Hessels@uva.nl F. Jenet fredricka jenet@gmail.com V. Kaspi vkaspi@physics.mcgill.ca B. Knispel Benjamin.Knispel@aei.mpg.de P. Lazarus grad plazarus@mipfr-bonn.mpg.de J. van Leeuwen leeuwen@astron.nl D. Lorimer Duncan.Lorimer@mail.wvu.edu R. Lynch rlynch@physics.mcgill.ca A. Lyne agl@jb.man.ac.uk M. McLaughlin maura.mclaughlin@mail.wvu.edu S. Ransom sransom@nrao.edu X. Siemens siemens@gravity.phys.uwm.edu B. Stappers Ben.Stappers@manchester.ac.uk J. Swiggum grad swiggumj@gmail.com A. Venkataraman arun@naic.edu W. Zhu zhuww@phas.ubc.ca More authors at http://www.naic.edu/ deneva/palfa/

This work is part of a PhD thesis.

Remote Observing Request

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

Section I I - Time Request
The following times are in LST. For these observations night-time is not needed.

Begin ­ End Interval­Interval 18:15 ­ 19:45 ­ ­ ­

Days Needed at This Interval 13

Time Constraints (Must Be Justified in the Prop osal Text)

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Particular spacing is required to solve the pulsars; see proposal text for details and justification. Note that any 90-minute block in the LST range 18:45 ­ 20:30 will work for this pro ject.

Next Semester Time Request

Begin ­ End Interval­Interval 18:15 ­ 19:45 ­ ­ ­

Days Needed at This Interval 6

Time Constraints (Must Be Justified in the Prop osal Text) Monthly spacing (roughly); see text for justification. Note that any 90-minute block in the LST range 18:45 ­ 20:30 will work for this pro ject.

Section I I I - Instruments Needed
L-wide Atmospheric Observation Instruments:

Sp ecial Equipment or setup: We will use the PUPPI backend.

Section IV - RFI Considerations Frequency Ranges Planned
1180-1780 This proposal requires coordination with Punta Salinas radar within the band 1222-1381 MHz.. This proposal requires coordination with GPS L3 at 1381 MHz.

Section V - Observing List Target List
RRAT J1917+11 PSR J1918+13 (may substitute PSR J1913+06 for this or for PSR J1928+14) PSR J1928+14 3


RRAT J1929+11 PSR J1933+17 PSR J1938+20

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