Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/ArchibaldtagP2472tp.pdf Дата изменения: Mon Feb 9 20:59:09 2009 Дата индексирования: Tue Aug 18 12:00:17 2009 Кодировка: Поисковые слова: ngc 281

Proposal Identification No.:

P2472

Date Received:

2009-Feb-03 06:40:07

Technical Page
Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Pulsars 18 Hours 30 min.

Phase-coherent timing of an LMXB-MSP transition ob ject

We have discovered a bright nearby eclipsing millisecond pulsar with a non-degenerate companion, a key "missing link" in the evolution of low-mass X-ray binaries into radio millisecond pulsars. Its companion is a 17th magnitude star, and the system appears to have had an accretion disc as recently as 2001. Phase-coherent timing promises to elucidate the dynamics and the energetics of this system. We request L- or C-band observations every three weeks for a year to develop a clear picture of the orbital evolution of this source and to support VLBI parallax observations.

Name Anne M Archibald

Institution McGill University

E-mail aarchiba@physics.mcgill.ca

Phone (514)398-7032

Student G

Remote Observing Request

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

Instrument Setup
L-wide C

Atmospheric Observation Instruments:

Sp ecial Equipment or setup:

none

RFI Considerations Frequency Ranges Planned

1