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Proposal Identification No.: P2070 Date Received: 2005­Feb­01 20:57:14
Technical Page
Proposal Type: Regular
General Category: Pulsars
Observation Category:
Total Time Requested: 40 Hours
Proposal Title: Ultra­High Time Resolution Measurements of the Crab ''Giant'' Radio Pulses:
Phase -- The Interpulse
ABSTRACT:
Our recent 9 GHz observations of ``giant pulses'' from the Crab Nebula pulsar have revealed that the dynamic
spectrum of the interpulse contains ``bands'' that are periodic in frequency, show an initial upward frequency drift,
and continue for the full pulse duration of 2­4 microseconds. The dynamic spectrum of the rarer main pulses shows
no similar structure. We propose to observe both the main and interpulse components of the Crab giant pulses at
other frequencies in order to understand the origins and di#erences between these two pulse components.
Name Institution E­mail Phone Student
Timoth H Hankins New Mexico Tech thankins@nrao.edu 505­835­7326
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
C X­high
Atmospheric Observation Instruments:
Description of Observer Equipment: New Mexico Tech Fast Sampling Sampling system
Special Equipment or setup: Mixer to convert 1­2 GHz IF down to 0­1 GHz. This mixer was used
in 2003, but subsequently disappeared!
RFI Considerations
1

Frequency Ranges Planned
2