GBT25B-315

Low Frequency Search for Slow Pulsars in Globular Clusters

Abstract

We propose observations of 6 globular clusters at 820 MHz (low frequency) to search for apparently young, slow globular cluster pulsars. This class of pulsar cannot have formed through the traditional massive star core-collapse channel. They represent an opportunity to study new neutron star formation channels like accretion induced collapse of a white dwarf, or collapse of a white dwarf binary merger remnant. However, not many of these objects have been observed. Globular clusters have mostly been searched for millisecond pulsars at high frequencies. At high frequencies, effects from dispersion measure and scattering are not as significant. However, these effects do not impact slow pulsars nearly as much as millisecond pulsars. Many slow globular cluster pulsars may have been missed when the clusters are observed at high frequencies. We thus want to specifically look for long period pulsars in globular clusters by observing at low frequencies.

Investigators

Name	Institution
Annika Deutsch *	Virginia, University of
Scott Ransom	National Radio Astronomy Observatory; Virginia, University of

* indicates the PI