erin w gunner h anna d shane c carly l shane s. mentor: sean

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Erin W Gunner H Anna D Shane C Carly L Shane S. Mentor: Sean Disney Reaches for the Stars

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Disney Reaches for the Stars. Erin W Gunner H Anna D Shane C Carly L Shane S. Mentor: Sean. Introduction. Project: to analyze data collected by the Green Bank telescope and search for pulsars Goals: Identify known pulsars, RFI, and new pulsars - PowerPoint PPT Presentation

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Page 1: 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

Page 2: Erin W  Gunner H  Anna D  Shane C Carly  L Shane S.  Mentor: Sean

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

Page 3: Erin W  Gunner H  Anna D  Shane C Carly  L Shane S.  Mentor: Sean

Harmonics in MotionKnown Pulsar Info:

Dec: -13:54 RA: 09:44 DM: 12.5Period: 0.57026

Page 4: Erin W  Gunner H  Anna D  Shane C Carly  L Shane S.  Mentor: Sean
Page 5: Erin W  Gunner H  Anna D  Shane C Carly  L Shane S.  Mentor: Sean

Radio Frequency Interference (R.F.I)

Documented in Rogue Gallery as a power line

Period ~ 1198 ms

Page 6: Erin W  Gunner H  Anna D  Shane C Carly  L Shane S.  Mentor: Sean

Known PulsarJ1610-1322

Comparisons:• RA and Dec

changed slightly from known pulsar in catalogue

• ~ no change in DM

Page 7: Erin W  Gunner H  Anna D  Shane C Carly  L Shane S.  Mentor: Sean

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.

Page 8: Erin W  Gunner H  Anna D  Shane C Carly  L Shane S.  Mentor: Sean

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

Page 10: Erin W  Gunner H  Anna D  Shane C Carly  L Shane S.  Mentor: Sean

GBT Comparison• Investigation looks

more like RFI than 2007 data

• We were very disappointed.

• No period change

Page 11: Erin W  Gunner H  Anna D  Shane C Carly  L Shane S.  Mentor: Sean

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