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Proposal Identification No.:

P2789 Arecibo Observatory

Date Received: 2014-Mar-03 16:27:08 William E. Gordon Telescope Observing Time Request COVER SHEET

Section I - General Information
Submitted for Mar 1 2014. This proposal has been submitted before. The previous proposal number is P2789. 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 56.75 21.25 36

less than 100 GB

Timing of pulsars discovered by the PALFA survey

We request a total of 89.5 hours over the course of a year. We wish to derive precision timing solutions for 17 pulsars found in the PALFA survey. Of these, 14 were discovered in the last 6 months, in order to determine spin and binary parameters, and hence fundamental properties such as astrometry, ages, magnetic fields, and spin-down luminosities. Two of these are millisecond pulsars (MSPs) and/or binary pulsars, each with its own particular science potential, 6 are Rotating Radio Transients (RRATs), and 6 are long-period pulsars vital for population and Galactic studies. We also wish to continue regular timing observations of 3 pulsars; 2 are MSPs for which continued monitoring can reveal further properties relevant to determination of their respective types and evolutions, and one is a long-period pulsar, for which we request time to obtain significant measurements of its spin and astrometric properties. Outreach Abstract: Pulsars are the neutron-star remnants of massive stars that have died in a supernova explosion. They rotate very rapidly the fastest known spins approximately 700 times per second! Pulsars emit radio beams that we see at every rotation, as with a lighthouse. These rotations can be counted very precisely, and this is what we aim to accomplish with the data from the 17 pulsars proposed in this pro ject, which were discovered by the ALFA pulsar survey. We wish to precisely determine properties of these pulsars, such as their ages and magnetic field strengths, and allow us to study the neutron star population as a whole. Some of these are in orbit with unseen companions these observations may enable us to describe these orbits. These observations may lead to tests of Einstein's theory of relativity, and the study of extreme matter that makes up the interiors of these stars.

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Name Robert D Ferdman Ingrid H Stairs

Institution McGill University University of British Columbia

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

Phone +1 514 6520 +1 604 6796

398 822

Student no no

Additional Authors
B. Allen; bruce.allen@aei.mpg.de S. Bogdanov; slavko@astro.columbia.edu 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 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; plazarus@mipfr-bonn.mpg.de (graduate student) 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 E. Madsen; madsense@physics.mcgill.ca (graduate student) 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; swiggumj@gmail.com (graduate student) A. Venkataraman; arun@naic.edu W. Zhu; zhuww@phas.ubc.ca

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 19:10 19:57 17:50 20:35 18:08 20:23 2

Days Needed at This Interval 6 14 6

Time Constraints (Must Be Justified in the Prop osal Text) The first and third set of observation sessions require monthly scheduling. For the first month of this semester, the second set of observations requires special observing cadence. Please see the scientific justification for further explanation.

Next Semester Time Request

Begin End IntervalInterval 19:10 19:57 17:50 20:35

Days Needed at This Interval 6 6

Time Constraints (Must Be Justified in the Prop osal Text) Both sets of observation sessions require monthly scheduling.

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

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

Section IV - RFI Considerations Frequency Ranges Planned
1180-1780 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.

Section V - Observing List Target List
RRAT J1849+01 18:49:00.0 10:00:00.0 17:35:59 20:03:22 PSR J1850+02 18:50:00.0 2:00:00.0 18:05:52 19:35:33 3

PSR J1854+00 18:54:00.0 0:00:00.0 18:25:30 19:23:57 PSR J1902+02 19:02:00.0 2:00:00.0 18:17:51 19:47:35 RRAT J1912+0829 19:12:00.0 8:29:00.0 18:02:26 20:22:55 RRAT J1914+0625 19:14:00.0 6:25:00.0 18:10:20 20:19:02 RRAT J1915+0639 19:15:00.0 6:39:00.0 18:10:36 20:20:47 RRAT J1917+11 19:17:00.0 11:00:00.0 18:02:00 20:33:19 PSR J1918+1310 19:18:00.0 13:10:00.0 17:59:37 20:37:42 PSR J1921+16 19:21:00.0 16:00:00.0 17:59:44 20:43:33 RRAT J1928+15 19:28:00.0 15:00:00.0 18:07:33 20:49:44 RRAT J1928+1725 19:28:00.0 17:25:00.0 18:05:54 20:51:21 PSR J1929+11 19:29:00.0 11:00:00.0 18:14:00 20:45:20 PSR J1932+17 19:32:00.0 17:00:00.0 18:10:06 20:55:10 PSR J1933+17 19:33:00.0 17:00:00.0 18:11:06 20:56:10 PSR J1936+20 19:36:00.0 20:00:00.0 18:13:28 20:59:46 PSR J1938+20 19:38:00.0 20:00:00.0 18:15:28 21:01:46

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