GBT25B-194

GB-SCOPE-II. Targeted 820MHz and S-band Search for Pulsars in the Galactic bulge

Abstract

Sensitive imaging surveys have been uncovering interesting new sources, including ones with properties which make them strong candidates for interesting galactic as well as extra-galactic sources. A good fraction of the Galactic compact, polarized, steep-spectrum sources are expected to be radio pulsars, some of which potentially also as parts of exotic binary systems or surrounded by dense environments. However, such image-based searches for pulsars have faced limitations due to many false positives caused by background extra-galactic sources, imaging artifacts, and the limited angular resolutions. Recently, Frail et al. have deduced more compelling list of pulsar candidates towards the Galactic bulge by applying a number of criteria including spectral index, linear and circular polarization and compactness, on MeerKAT images. Their non-detection in the previous surveys might have been limited by potentially short periods and large scatter-broadening or the sensitivity. We request observations to search for radio pulsations towards these sources at S-band where the scatter-broadening will be much smaller and at 820 MHz where their steep spectra help in achieving the required sensitivity. We request a modest 19 hours of the telescope time, to conduct deep search for radio pulsars in these sources and potentially find new exciting pulsars.

Investigators

Name	Institution
Yogesh Maan *	Tata Institute of Fundamental Research
Banshi Lal	Tata Institute of Fundamental Research
Yash Bhusare	Tata Institute of Fundamental Research
Dale Frail	National Radio Astronomy Observatory

* indicates the PI