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Polarization Calibration of Millisecond Pulsars in Terzan5

Published onJun 01, 2020
Polarization Calibration of Millisecond Pulsars in Terzan5

The globular cluster Terzan 5 contains 38 pulsars, each of which has the potential to generate new knowledge about pulsar emission mechanisms, the interstellar medium, nuclear physics, gravitational waves, and many other fields of physics and astronomy. Timing these pulsars is one of the first and most important steps in studying them which requires accurate flux density measurements of the pulsar throughout many different epochs of observation. Additionally, to better understand pulsar emission mechanisms, polarization data must also be recorded from each pulsar on every observation. In 2014, a hardware malfunction on the GUPPI instrument at the Green Bank Observatory caused subsequent polarization measurements of the pulsars in Terzan 5 to be uncalibrated and incorrect. I will be presenting a method of creating per-epoch receiver solutions for all of the observed pulsars to extract polarization measurements for multiple years worth of corrupted data.

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