Team Jodrell Findings

http://tinyurl.com/4xzhsoa

Paula BrightConnie GartnerRachel JenningsMike Mattox Jane ShamitkoJen 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.

J1744-1610 GBT - 350 MHz Drift Scan

Did you ever hear of drop average?

GBT - 820 MHz Scan  J1744-1610

Ours was about .01It should have 1x10-20 or smaller

J1610-1322 at 350 MHz

J1610-1322 at 820 MHz

J1024+0039 350 MHz

J1024+0039 at 820 Mhz

Pulsar?

RFI!

RFI

Periods of Known RFI Sources

• 1198 ms signals power lines • 933 ms • 467 ms • 16.8 ms signals AC

RFI: An Example of a 16.8 ms Period

RFI: An Example of an 1198 ms Period

What We Would Do Next Time if We Had More Time

We would look at the pulsars at different frequencies to see what differences we would see across the frequencies.

We would re-run the data for the pulsars that dropped the packets to see what information we could see for the  frequency of 820 MHz.

Questions for Next Time

Is there a way to take the RFI out of the data plots to see what is masked by the RFI?

Could some of the RFI have been a software malfunction like we saw during our GBT time?