Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/LorimertagP2491tp.pdf Дата изменения: Wed Apr 1 19:23:19 2009 Дата индексирования: Tue Aug 18 11:32:01 2009 Кодировка: Поисковые слова: http www.astronomy.ru forum index.php topic 4644.0.html

Proposal Identification No.:

P2491

Date Received:

2009-Mar-09 11:01:45

Technical Page
Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Pulsars Galactic 40 Hours 20

A 770-MHz Arecibo pulsar survey of globular clusters

The scientific applications of pulsars in globular clusters are plentiful and include the first ever proof of the existence of ionized gas in globular clusters and recent evidence for the existence of high-mass neutron stars which challenge many equations of state for super-dense matter. Future discoveries expected from globular clusters include binary pairs of millisecond pulsars and pulsar­black hole binary systems. We request 40 hours to search the 720-820 MHz band for new pulsars in a sample of 18 globular clusters with Arecibo. To our knowledge, four of these clusters have not been previously searched. For the remainder, our proposed observations would be typically a factor of 3 more sensitive than the recent Arecibo survey carried out by Hessels et al. Based on the detection rate of this previous survey, we estimate that up to 60 pulsars could be detected in this sample of clusters, where 23 pulsars are currently known.

Name Duncan R Lorimer

Institution West Virginia University

E-mail duncan.lorimer@mail.wvu.edu

Phone Student 3042933422x1470 no

Remote Observing Request

X

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

Instrument Setup
705-825 Atmospheric Observation Instruments:

Sp ecial Equipment or setup:

none

RFI Considerations
1


Frequency Ranges Planned

2