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Proposal Identification No.:

P2789 Arecibo Observatory

Date Received: 2012-Sep-04 17:54:23 William E. Gordon Telescope Observing Time Request COVER SHEET

Section I - General Information
Submitted for Sep 1 2012. 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 55.25 25.5 0 3.25 for session A, 1.0h for session B less than 100 GB

Timing of New Pulsars Discovered by PALFA

We request a total of 80.75 hours over the course of a year (55.25 in the Spring, 25.5 in the Fall) to derive precision timing solutions for 21 pulsars recently discovered in the PALFA survey, in order to determine spin and binary parameters, and hence fundamental properties such as ages, magnetic fields, and spin-down luminosities. Six of the pulsars are millisecond pulsars, each with particular science potential, and the younger pulsars are 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 21 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 Patrick Lazarus

Institution University of British Columbia MPIfR

E-mail stairs@astro.ubc.ca plazarus@mpifr-bonn.mpg.de

Phone 604-822-6796 +49 228 525 181

Student no G

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Additional Authors
B. Allen bruce.allen@aei.mpg.de N. Bhat rbhat@astro.swin.edu.au 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 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 17:45 21:00 05:30 06:30

Days Needed at This Interval 13 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.

Next Semester Time Request

Begin End IntervalInterval 17:45 21:00 05:30 06:30

Days Needed at This Interval 6 6

Time Constraints (Must Be Justified in the Prop osal Text) Monthly spacing (roughly); see text for justification.

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

Sp ecial Equipment or setup: PUPPI is needed at each run.

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
PSR PSR PSR PSR PSR PSR PSR J0557+17 J1851+02 J1858+02 J1902+03 J1905+04 J1906+01 J1907+08 3

PSR PSR PSR PSR PSR PSR PSR PSR PSR PSR PSR PSR PSR PSR

J1910+1017 J1910+1027 J1911+09 J1912+09 J1913+1102 J1913+1103 J1914+14 J1915+11 J1930+14 J1934+19 J1950+24 J1952+25 J1957+25 J2010+31

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