PIRSA:15120003

Compact object mergers with spinning neutron stars

East, W. (2015). Compact object mergers with spinning neutron stars. Perimeter Institute. https://pirsa.org/15120003

East, William. Compact object mergers with spinning neutron stars. Perimeter Institute, Dec. 03, 2015, https://pirsa.org/15120003 

          @misc{ pirsa_PIRSA:15120003,
            doi = {10.48660/15120003},
            url = {https://pirsa.org/15120003},
            author = {East, William},
            keywords = {Strong Gravity},
            language = {en},
            title = {Compact object mergers with spinning neutron stars},
            publisher = {Perimeter Institute},
            year = {2015},
            month = {dec},
            note = {PIRSA:15120003 see, \url{https://pirsa.org}}
          }

William East Perimeter Institute for Theoretical Physics

DOI 10.48660/15120003
Collection
Talk Type Scientific Series
Subject

Abstract

The mergers of black hole-neutron star and neutron star-neutron star binaries are one of the primary targets for Advanced LIGO and other gravitational wave detectors now coming online. In addition, these events may source a number of electromagnetic counterparts, including short gamma-ray bursts and ejecta powered transients. Particularly in the case of binaries that are dynamically-assembled in dense stellar regions like globular clusters, these mergers may involve neutron stars with non-negligible spin. I will present results from simulations of such events that show that neutron star spin can have important consequences, including altering the amount of unbound material that may power a transient, and determining whether or not a hypermassive neutron star forms following a binary neutron star merger. I will also discuss how in some cases, this resulting hypermassive neutron star becomes dominated by the one-arm spiral instability, and how this affects the gravitational signal from such events.