Erin W Gunner H Anna D Shane C Carly L Shane S. Mentor: Sean
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Transcript of Erin W Gunner H Anna D Shane C Carly L Shane S. Mentor: Sean
Erin W Gunner H
Anna D Shane C
Carly LShane S.
Mentor: Sean
Disney Reaches for the Stars
IntroductionProject: to analyze data collected by the
Green Bank telescope and search for pulsarsGoals:
Identify known pulsars, RFI, and new pulsarsInvestigate variations in periodsSort noise from significant data
Harmonics in MotionKnown Pulsar Info:
Dec: -13:54 RA: 09:44 DM: 12.5Period: 0.57026
Radio Frequency Interference (R.F.I)
Documented in Rogue Gallery as a power line
Period ~ 1198 ms
Known PulsarJ1610-1322
Comparisons:• RA and Dec
changed slightly from known pulsar in catalogue
• ~ no change in DM
GBT Candidates
• Not in ATNF
•New pulsar, named J2013-06 in new drift scan data
•Never before seen at 800 MHz.
•Strong pulse profile against noise.
2013-0650 ComparisonMuch clearer lines.
In 2007 it was observed at a frequency of 350 MHz and now it was observed at a frequency of 800 MHz.
Little period change
GBT Candidates
•Strong vertical lines in the Sub-band Plot.
•Low probability of noise.
•Definitely not a known pulsar.
GBT Comparison• Investigation looks
more like RFI than 2007 data
• We were very disappointed.
• No period change
CertaintiesAbout 30 plots with
extremely close DM values
RFI is present in almost half of the plots examined (47%)
Saw 3 known pulsars
Uncertainties/QuestionsCould harmonics be
different pulsars?Why is there a difference
when the pulsar was observed at 350 MHz and 800 MHz? What can we learn about the pulsar?
Conclusions