Sifting for Pulsars w ith Jodrell Banks. b y Paula Bright, Connie Gartner, Rachel Jennings, Mike Mattox, Jane Shamitko and Jen VanDerMolen. Team Jodrell : tasks
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with Jodrell Banks
by Paula Bright, Connie Gartner, Rachel Jennings,
Mike Mattox, Jane Shamitko and Jen VanDerMolen
Team Jodrell: tasks
Our task was to search for potential pulsar candidates, Radio Frequency Interference (RFI) and to distinguish between the two.
We did this by viewing 15 different data sets at 350 MHz (6 of which had never been viewed/analyzed before). Then we used the GBT to look at the potential pulsar candidates at 820 MHz.
We were able to look at a newly found binary pulsar due to its location being near our pulsar candidates.
RFI Gone Wild
Presto Plot at 350 MHz
Single Pulse Plot at 350 MHz
Integration Plot has a cosine wave
Empty bins in the Sub Integration plot due to the high period of 8 seconds
Excessive DM range
Frequency = 0.124076 (Hz)
Can you see the difference between
the two peaks in the
Presto Plot at 820 MHz
Example of a Binary Pulsar
Example Plot with a 16.8 ms Period
J1024+0039 at 350 MHz
Example Plot with a 1198 ms Period
J1744-1610 at 350 MHz
Note the double peaks in the integration plot and the empty bins in the sub-integration plot. That along with the short period identifies it as a binary pulsar.
Radio Frequency Interference (RFI)
J1744-1610 at 820 MHz
Possible Pulsar Candidate?
Looking at additional data in the Time Histogram at a different range shows RFI