Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/DolchtagP2800tp.ps Дата изменения: Mon Oct 8 22:37:24 2012 Дата индексирования: Mon Feb 4 18:11:37 2013 Кодировка: Поисковые слова: arp 220

Proposal Identification No.: P2800 Date Received: 2012­Oct­08 11:39:54
Technical Page
Proposal Type: Short
General Category: Pulsars
Observation Category: Galactic
Total Time Requested: 1 Hours
Minimum Useful Time: 1hr
Proposal Title: Redo After Equipment Problem: NANOGrav precision timing, ISM irregularities
toward pulsar B1937+21
ABSTRACT:
We propose re­observing for an hour of lost time on project P2676, observing pulsar B1937+21 with PUPPI at
L­band. The error occurred due to an unforeseeable equipment failure with two aspects. The first occurred during
an in­person observing session when the entire system of PUPPI' s GPU nodes became non­responsive for a half
hour during our scheduled time. Later, upon first analyzing the data, it quickly became clear that even the good
data from the second half hour of the observing session was problematic. After correspondence with colleagues, we
discovered that the error was in the instrument' s electronics, and that it had been present before our observation.
In light of these two independent instrumental problems which had occurred during our first hour of observing time
(followed by successful remote follow­up observations), we request an additional hour on B1937+21 during the late
afternoon/early evening hours. This can easily be done remotely.
Name Institution E­mail Phone Student
Timothy E Dolch Oberlin College tdolch@oberlin.edu 440­775­5207 no
Remote Observing Request
Observer will travel to AO
X Remote Observing
In Absentia (instructions to oper­
ator)
Instrument Setup
L­wide
Atmospheric Observation Instruments:
Special Equipment or setup: none
RFI Considerations
1

Frequency Ranges Planned
1150 ­ 1730 MHz
This proposal requires coordination with Punta Salinas radar within the band 1222­1381 MHz..
2