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Proposal Identification No.:

P2862 Arecibo Observatory

Date Received: 2013-Sep-03 16:50:18 William E. Gordon Telescope Observing Time Request COVER SHEET

Section I - General Information
Submitted for Sep 1 2013. This proposal has not been submitted before. Proposal Type: General Category: Observation Category: Time Requested this 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 24 0 1:15 over 500 GB

Searching for Radio Millisecond Pulsars in a New Set of Fermi Sources

Fermi has revolutionized our understanding of the GeV sky, and provided a map for finding new radio millisecond pulsars. In the past four years, radio astronomers have discovered 60 MSPs in searches of Fermi unassociated sources. Most of these pulsars were discovered and followed-up by the "Pulsar Search Consortium" from sources detected in the Fermi all-sky catalog. We propose searches on a new, different set of Fermi sources detected using non-standard Fermi all-sky analysis, optimized to detect sources with pulsar-like spectra. As these are faint Fermi sources with large errors, most will require a four-pointing grid search, even at 327 MHz, to cover the gamma-ray error box. We propose 24 hours of Arecibo time to perform the grid searches, plus time for a confirmation observation if needed. We will also search for giant pulses from any new MSP we discover. Outreach Abstract: Millisecond pulsars (MSPs) are rapidly rotating neutron stars, the collapsed cores of stars that have gone supernova. They have been spun up to shorter and shorter periods by the transfer of material from a companion star. A few years ago, only about 60 MSPs were known in our Galaxy. But radio observations of sources detected by the Fermi Gamma-Ray Space Telescope have found a large number of new MSPs. The total is now over 200, and searches like this one are helping astronomers to find even more. Studying the radio and gamma-ray emission from MSPs can help us understand the nature of the nuclear material that makes up these ob jects. Additionally, pulsations from MSPs are very stable, making them excellent clocks. Astronomers hope to detect tiny changes in the arrival times of the radio pulses as evidence of Einstein's theorized gravitational waves traveling through the Galaxy.

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Name Elizabeth C Ferrara Paul S Ray

Institution NASA GSFC and Univ. of Maryland Naval Research Laboratory

E-mail Elizabeth.C.Ferrara@nasa.gov paul.ray@nrl.navy.mil

Phone 301-286-7057 202-404-1619

Student no no

Additional Authors
Tyrel Johnson (NRC) tyrel.johnson.ctr@nrl.navy.mil Zaven Arzoumanian (NASA) zaven.arzoumanian@nasa.gov Toby Burnett (Univ. of Washington) tburnett@myuw.net

This work is not part of a thesis.

Remote Observing Request

X

Observer will travel to AO 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 23:00 ­ 05:00 01:00 ­ 05:40 13:00 ­ 16:30 17:00 ­ 20:30

Days Needed at This Interval 1 1 1 1

Time Constraints (Must Be Justified in the Prop osal Text) No constraints

Section I I I - Instruments Needed
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327 Atmospheric Observation Instruments:

Sp ecial Equipment or setup: none

Section IV - RFI Considerations Frequency Ranges Planned
none

Section V - Observing List Target List
PSEED-828 PSEED-790 PSEED-822 PSEED-694 PSEED-609 PSEED-674 PSEED-658 PSEED-640 PSEED-010 PSEED-046 PSEED-105 PSEED-253 PSEED-375 PSEED-425 PSEED-847 01:03:35 02:07:56 02:11:06 03:57:24 04:28:26 04:40:54 04:47:32 05:18:16 12:52:58 15:18:42 16:30:53 17:46:54 18:56:56 19:09:35 23:50:44 +15:30:27 +22:01:14 +12:56:27 +23:22:28 +31:09:17 +15:16:19 +17:12:28 +11:33:54 +09:04:42 +13:39:28 +10:44:58 +01:40:22 +17:35:12 +21:03:54 +03:12:05 23:43 00:46 00:53 02:37 03:23 03:20 03:26 04:02 11:42 14:00 15:17 17:05 17:35 17:48 23:00 02:26 03:31 03:31 05:19 05:35 06:03 06:11 06:35 14:05 16:39 17:46 18:30 20:20 20:33 00:43

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