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Дата изменения: Mon Apr 19 20:00:09 2004
Дата индексирования: Sat Dec 22 23:48:26 2007
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Поисковые слова: apollo 11

Proposal Identication No.: P1745 Date Received: 2003-Oct-03 02:09:03
Technical Page
Proposal Type: Regular
General Category: Pulsars
Observation Category:
Total Time Requested: 16 Hours
Proposal Title: Investigation of Mode switching phenomenon in single-component pulsars
ABSTRACT:
We request 16 hr of telescope time for observations of a small sample of pulsars with single-component pulse
proles. The primary goal is to investigate the stability of the pulse structure and strength, in particular with an
attempt to detect mode switching phenomenon. This is motivated by our recent ndings from post-upgrade
Arecibo data, where PSR B0611+22, a pulsar with a single-component prole (core single), appears to show mode
switching phenomenon over durations of up to ~ 500 pulse periods. This makes it the only core-single pulsar that
exhibits mode switching. Further, the new data also reveal previously unresolved components of this pulsar. It is
our aim to conrm and further investigate these results, and extend such a study to several more pulsars that are
classied as 'singles'. We expect that our results will contribute to estimates of the emission heights and have
implications for better understanding of the geometry of pulsars.
Name Institution E-mail Phone Student
Leszek A Nowakowski UPR Mayaguez leszekan@coqui.net 787-265-3844
ext. 2025
no
Service Observing Request Remot e Observing Request
X None X No
All of the observing run. Maybe
Part of the observing run. Yes
Queue Observing
Instrument Setup
430 G L-wide
Atmospheric Observation Instruments:
Special Equipment or setup: none
RFI Considerations
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Frequency Ranges Planned
This proposal requires Iridium RFI protection at 1612 MHz between 10pm and 6am EST.
This proposal requires coordination with Punta Salinas radar within the band 1222-1381 MHz..
This proposal requires coordination with GPS L3 at 1381 MHz.
This proposal requires coordination with AFTWF within the band 425-435 MHz.
2