Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/NicetagP2239tp.pdf Дата изменения: Tue Aug 15 22:45:30 2006 Дата индексирования: Sat Dec 22 21:20:26 2007 Кодировка: Поисковые слова: stars

Proposal Identification No.:

P2239

Date Received:

2006-Jun-01 15:42:51

Technical Page
Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Pulsars Galactic 32 Hours 1.25

Two Massive Neutron Stars

Arecibo observations of the relativistic pulsar­white-dwarf binaries J0621+1002 and J0751+1807 have yielded exciting evidence that these two neutron stars are relatively massive, at 1.7+-0.3 and 2.1+-0.2 solar masses, respectively (68% confidence). These mass measurements are among the very few constraints available on the equation of state of nuclear matter at high densities, and it is crucial that the uncertainties in the measurements be reduced. It has been several years since either of these pulsars has been observed. In this program, we will observe a full orbit of each pulsar in order to increase the precision of the relativistic orbital measurements and to refine the derived mass values.

Name David J Nice

Institution Bryn Mawr College

E-mail dnice@brynmawr.edu

Phone 1-610-526-5361

Student no

Remote Observing Request

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

Instrument Setup
430 G L-wide

Atmospheric Observation Instruments:

Description of Observer Equipment: ASP data acquisition system. (We will also use WAPPs). Sp ecial Equipment or setup: none

RFI Considerations
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Frequency Ranges Planned
420-440 1120-1220 1320-1525 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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