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2011 Pulsar Search Collaboratory Data. Team Lyne Delaney Jeanine Pigott Elizabeth Leigh Schmitz Mariah Francine Gnegy Zachary Filmore Ramey Dana Marie Dawley Thomas Eugene Hillenbrand. Team Mentor: Caitlin Joannah Ahrens. Objective.
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2011 Pulsar Search Collaboratory Data Team Lyne Delaney Jeanine Pigott Elizabeth Leigh Schmitz Mariah Francine Gnegy Zachary Filmore Ramey Dana Marie Dawley Thomas Eugene Hillenbrand Team Mentor: Caitlin Joannah Ahrens
Objective • Search through fifteen data sets to detect possible pulsars • Identify RFI sources • Identify noise • Follow up possible pulsars with observations from GBT
Procedure • Search through plots and differentiate between RFI, noise, and possible pulsars • Observe FFT (double pulse) plots and single pulse plots, • Analyze patterns from the time domain, frequency domain, and the dispersion measure plots • Compare follow up data from GBT with previous data
Noise Plot • Reduced chi-squared is less than 1 • P(noise) < 1 • No distinguishable signal from pulse profile • DM plot is not bell shaped
RFI Plot • Snake bite on frequency domain plot • DM Plot peaks at zero • No vertical bins on time domain plot
Single Pulse RFI Plot • All plots peak at a DM signal of zero • Possibly not at the right frequency to pick up other signals
Pulsar Candidates • Clear peaks in pulse profile • Clear vertical bins on time domain plot and frequency domain plots • P(noise) is near zero
Pulsar Candidates (cont) • Relatively small error bar • Clear and sharp peaks in pulse profile • Visible lines in time domain and sub-band plots • Bell-curved DM plot
Pulsar Candidates (cont) • Small error bar • Two clear distinguishable peaks on pulse profile • Visible vertical bins on time domain plot • DM plot has a clear distinct bell shape • Reduced chi-squared is 5.2 • P(noise) ~ zero
Follow Up • Known pulsar in drift scan survey • Interrupted by RFI • DM plot has a peak at zero • Snake bites are apparent in frequency domain plot and it is white • Reduced chi-squared is 93 • P(noise) ~ zero
Discussion • Lack of sufficient follow up data from GBT • Unable to draw conclusions • Remaining Questions: • Has there been any changes to J1736-0241 since the last follow up?