Author

S. Ocker

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Preprint Oct 2026

Source velocities of fast radio bursts constrained by their dispersion measure variations

Growing evidence suggests that many fast radio bursts (FRBs) originate from extragalactic magnetars. Like all neutron stars, magnetars may be kicked at birth to large velocities, the values of which directly inform the physics governing stellar explosions and compact object formation. A subset of repeating FRBs show si...

S. Ocker, A. L. Piro · 0 citations

Preprint Sep 2026

Constraints on Supermassive Black Hole Binaries from the Lack of Resolvable Sources in the NANOGrav 15-yr Dataset

Pulsar timing arrays (PTAs) have found evidence of a gravitational wave background (GWB) consistent with a population of supermassive black hole binaries (SMBHBs), but have not yet resolved a continuous wave (CW) from an individual binary. We present the first SMBHB population constraints incorporating PTA upper limits...

Emiko C. Gardiner, K. Gültekin, P. Turgeon et al. · 1 citation