GBT24A-351

Establishing the Energetics of the Luminous Gamma-Ray Redback: PSR J0212+5321

Abstract

Following our brief detections of the long-suspected redback PSR J0212+5321 at L-band during Project 22A-354 (Perez et al. 2023), we aim to cover the majority of the 20.9 hr orbit to more tightly constrain the pulsar spin and orbital parameters. The goal is to use these results to seed a search for gamma-ray pulsations, which in turn will yield a phase-connected ephemeris, with its period derivative, spin-down derivative (expected to be large), and any variations in orbital period over the now 16 year old Fermi mission. The long-term ephemeris will also enable the detection of X-ray/UV pulsations in the event that the system transitions to a radio-quiet accretion disk state in the future.

Investigators

Name	Institution
Karen Perez *	Columbia University
Vishal Gajjar	California at Berkeley, University of
Jules Halpern	Columbia University
David MacMahon	California at Berkeley, University of
Steve Croft	California at Berkeley, University of
Slavko Bogdanov	Columbia University
Matt Lebofsky	California at Berkeley, University of

* indicates the PI