New eclipsing millisecond pulsars in the Galactic globular cluster Terzan 5

Dr. Ryan Urquhart(Michigan State University)

May 24, 2021

Owing to its massive, dense core, Terzan 5 has the richest population of millisecond pulsars known among Galactic globular clusters. Using new deep VLA (2-8 GHz) radio continuum observations of Terzan 5, we have identified a selection of known millisecond pulsars (discovered via timing analysis), plus a handful of previously unknown steep-spectrum radio sources. We also investigate the X-ray properties of these new sources. The combined X-ray/radio analysis suggests the sources are binary millisecond pulsars belonging to the 'spider' classification. The likely discovery of bright binary millisecond pulsars in a well-studied cluster like Terzan\,5 highlights how deep radio continuum imaging can complement pulsar search and timing observations.

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