Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/LynchtagP2650tp.pdf Дата изменения: Tue Oct 1 18:52:20 2013 Дата индексирования: Mon Apr 11 15:18:07 2016 Кодировка: Поисковые слова: воздушные массы

Proposal Identification No.:

P2650

Date Received:

2013-Sep-03 15:31:52

Technical Page
This proposal has been submitted before. The previous proposal number is P2650. Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: Regular Pulsars Galactic 12 Hours 1.0

Long Term Timing of PSR J0348+0432: A Unique and Powerful Laboratory for

Extreme Gravity
ABSTRACT:
We propose to continue long-term timing of the relativistic binary pulsar system J0348+0432, with the goal of improving our precision measurement of the decay of the orbital period from gravitational wave emission. The pulsar has a white dwarf companion with mass Mc = 0.172 Msun, and the pulsar mass is Mp = 2.01 Msun. According to some theories of gravity, the large difference in the compactness of these ob jects and the tight 2.46-hr orbit should cause significant emission of dipolar gravitational waves. Our measurement of the orbital decay is, however, in good agreement with general relativity and has allowed us to rule out significant phase space for the scalar field coupling constants in Scalar-Tensor theories of gravity. Continued Arecibo pulsar timing will improve the precision of our orbital decay measurements. This will further tighten the constraints on alternative theories of gravity, and provide more precise mass estimates.

Name Ryan S Lynch

Institution McGill University

E-mail rlynch@physics.mcgill.ca

Phone 717-823-1585

Student no

Remote Observing Request

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

Instrument Setup
L-wide Atmospheric Observation Instruments:

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Sp ecial Equipment or setup: PUPPI is primary. WAPPs are back-up.

RFI Considerations Frequency Ranges Planned
1150 - 1730 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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