GBT25B-025

Timing the New Huntsman Millisecond Pulsar PSR J1947-1120

Abstract

We have used GBT to discover PSR J1947-1120, a new pulsar with a spin period of 2.24 ms and red giant companion star in a 10.3 d orbit. This is only the second member of the "huntsman" class, which host highly recycled pulsars and heavily stripped evolved red giant secondaries. Huntsman pulsars offer a promising route to better understand the recycling of typical millisecond pulsars at an intermediate stage in the process. Here we propose timing observations of PSR J1947-1120 to determine a phase-connected timing solution, enabling measurements of the pulsar spindown luminosity, magnetic field, and improved constraints on component masses. A radio solution would additionally give a strong chance at detecting gamma-ray pulsations in this LAT-detected source, extending the timing solution for 17 years and hence allowing even more precise constraints on the system parameters.

Investigators

Name	Institution
Jay Strader *	Michigan State University
Rebecca Kyer	Michigan State University
Maura McLaughlin	West Virginia University
Julia Deneva	Naval Research Laboratory
Paul Ray	Naval Research Laboratory
Megan DeCesar	George Mason University

* indicates the PI