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Team hulse pulsar collaboration

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Presentation on theme: "Team hulse pulsar collaboration"— Presentation transcript:

1 Team hulse pulsar collaboration

2 Questions to be answered:
~ What data sets were examined? ~ how many were candidates? What makes them probable pulsars? ~ How many were non candidates? what makes them non candidates? ~ What is the team’s methodology? ~ Can improvements be made?

3 methodology Team splits up plots
looks through plots for the first time weeds out obvious non candidates Documents possible candidates Has team review documented candidates Team decides what should go up for final review Likely pulsar candidates are posted for review on the gbt.

4 What data sets were examined?
300 plots total

5 How many were non candidates?
299 Non candidates

6 The lone candidate 1 Candidate As well as 1 known pulsar

7 1 possible candidate plot 1

8 1 possible candidate plot 2

9 1 known pulsar B Plot Plot 2

10 299 non candidates What was it? RFI

11 299 non candidates Why is it RFI? plot 1 plot 2
Pulse profile: Oscillating. Time series: too wide. Sub-band: not at all frequencies. DM: is okay but does not have one good peak. plot 2 Pulse profile: looks okay. Time series: too wide. Sub-band: too wide. Dm: dm is at zero.

12 Can improvements be made?
~ change hot key locations ~ change comment box layout Pulse Profile: Appears to be random noise. Time: Does not match Pulse Profile. Sub-band: Shows narrow band characteristics. DM: Shows little significance.

13 conclusion If continued under the present conditions, the nrao psc should be a very successful program, identifying many new pulsars. Pulse Profile: Time: Sub-band: DM:

14 Russell a. hulse American physicist Nobel prize winner Studied pulsars
Studied gravitational waves Found the first binary pulsar Time: DM:


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