Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/DemoresttagP2624tp.pdf Дата изменения: Thu Feb 10 23:52:32 2011 Дата индексирования: Mon Feb 4 23:23:37 2013 Кодировка: Поисковые слова: arp 220

Proposal Identification No.:

P2624

Date Received:

2011-Feb-04 15:17:16

Technical Page
Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Pulsars Extragalactic 96 Hours 2 hours

Expansion of the NANOGrav Pulsar Timing Array

Direct detection of gravitational waves (GW) is a ma jor goal in experimental physics and will revolutionize astrophysics, opening an entirely new spectrum for exploration. Precision pulsar timing stands an excellent chance of being the first method to accomplish this feat. Combining data from many ob jects into a Pulsar Timing Array (PTA) makes GW detection possible. Increasing the number of pulsars in the array improves sensitivity ­ the detection significance improves approximately linearly with the number of pulsars. Observing more pulsars also helps mitigate intrinsic systematic timing effects. The past year has seen a unexpected and unprecedented number of new millisecond pulsars (MSPs) discovered, due to several ongoing radio sky surveys (GBT 350-MHz surveys; PALFA) and targeted radio searches of Fermi-identified gamma-ray point sources. Here we propose an expansion of our ongoing PTA pro ject to take advantage of these new sources.

Name Paul B Demorest

Institution NRAO

E-mail pdemores@nrao.edu

Phone 434-244-6838

Student no

Remote Observing Request

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

Instrument Setup
430 G L-wide S-low 327

Atmospheric Observation Instruments:

Sp ecial Equipment or setup: ASP pulsar backend WAPP pulsar backends PUPPI pulsar backend (if available)

RFI Considerations
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Frequency Ranges Planned
310-350 420-440 1120-1620 2300-3000

This proposal requires coordination with Punta Salinas radar within the band 1222-1381 MHz.. This proposal requires coordination with GPS L3 at 1381 MHz.

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