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Proposal Identification No.: Mail hard copies to: Dr. Michael Nolan , Director Arecibo Observatory HC 3 Box 53995 Arecibo, PR 00612 U.S.A.

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Date Received: ARECIBO OBSERVATORY NATIONAL ASTRONOMY AND IONOSPHERE CENTER OBSERVING TIME REQUEST COVER SHEET

2009-Dec-26 05:38:34

We are indebted to our user community for their continued support of the Arecibo Observatory, Puerto Rico.

Section I - General Information
Submitted for special 2009. This proposal has not been submitted before. Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Expected Data Storage: Prop osal Title: ABSTRACT: Director Discretionary Time Pulsars Galactic 14 Hours 0.75 hours 100-500 GB

Two New Bright Millisecond Pulsars Coincident with Fermi Unidentified Sources

Under GBT/Fermi pro ject GLAST021296, we have observed 47 unidentified Fermi gamma-ray sources not contained in the Fermi "Bright Source List" to search for radio pulsations. Our analysis of these data is roughly 50% complete, and we have already discovered 5 millisecond pulsars, two of which are within the declination range visible with Arecibo. These sources will undoubtedly shed light on the nature of Galactic gamma-ray sources and are likely very interesting pulsars in their own right. We plan to announce these discoveries at the January AAS along with a multi-institution press release. Here we propose an exploratory set of observations of the two Arecibo-visible sources to determine how to proceed at the next regular proposal deadline.

Name Jason WT Hessels

Mallory SE Roberts Additional Authors

Institution ASTRON (Netherlands Institute for Radio Astronomy) Eureka Scientific

E-mail j.w.t.hessels@uva.nl

Phone Student +31(0)610260062 no

malloryr@gmail.com

no

Maura McLaughlin (maura.mclaughlin@mail.wvu.edu) Scott Ransom (sransom@nrao.edu) Paul Ray (paul.ray@navy.nrl.mil)

Priya Bangale (priyadarshini.bangale@gmail.com) Fernando Camilo (fernando@astron.columbia.edu)

Mathew Kerr (mathew.kerr@gmail.com)

I will not need financial support. 1


This work is part of a MS 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.

Begin ­ End Interval­Interval 00:00 ­ 00:45 17:45 ­ 18:30 ­ ­

Days Needed at This Interval 9 9

Time Constraints (Must Be Justified in the Prop osal Text) The gridding observations (2 sessions in each of the two required time slots) must be scheduled before the timing observations. For the part of this proposal in which we will be constructing a timing solution, we need the right cadence of observing days: 1,2,3,5,8,11, and 14. See proposal.

Section I I I - Instruments Needed
327 ALFA

Atmospheric Observation Instruments:

Sp ecial Equipment or setup:

none

Section IV - RFI Considerations Frequency Ranges Planned

2


300 - 350 1120 - 1220 1370 - 1570

Section V - Observing List Target List
00:23:00 +09:00:00 Millisecond Pulsar 18:10:00 +17:00:00 Millisecond Pulsar

3