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Proposal Identification No.: P2205 Date Received: 2006­Feb­01 13:23:49
Technical Page
Proposal Type: Regular
General Category: Pulsars
Observation Category:
Total Time Requested: 21.5 Hours
Proposal Title: Monitoring and Timing of RRAT Sources
ABSTRACT:
We have recently reported the discovery of a new class of Rotating RAdio Transients (RRATs), 11 objects
characterized by repeated radio bursts with widths of 2 to 30 ms. While periods in the 0.4 to 7 s range have been
measured from the arrival times of the individual bursts, the RRATs are not detectable through standard pulsar
search techniques that rely on their time­averaged emission. We have observed two of the RRATs, J1911+00 and
J1913+1333, from Arecibo, revealing burst rates roughly 16 times that measured with Parkes and allowing us to
measure a period of 6.9 seconds for J1911+00. The Arecibo observations of J1913+1333 have revealed an episode
of enhanced bursting activity which lasts for several minutes, a new phenomenon quite di#erent to the isolated
bursts detected with Parkes. We request additional timing/monitoring observations that will help elucidate the
emission mechanism(s) at play and also enable us to make more robust estimates of the total population of these
objects (almost certainly several times greater than that of the normal radio pulsars).
Name Institution E­mail Phone Student
Maura A McLaughlin Jodrell Bank Obser­
vatory
mclaughl@jb.man.ac.uk 44 1477 537751 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
L­wide 327
Atmospheric Observation Instruments:
Special Equipment or setup: none
RFI Considerations
1

Frequency Ranges Planned
314­364 MHz
1125­1625 MHz
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 1222­1381 MHz..
This proposal requires coordination with GPS L3 at 1381 MHz.
2