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arXiv · 1902.00144

Neutron Star Interior Composition Explorer X-ray Timing of the Radio and Gamma-ray Quiet Pulsars PSR J1412+7922 AND PSR J1849-0001

Slavko Bogdanov·Wynn C. G. Ho·Teruaki Enoto·Sebastien Guillot·Alice K. Harding·Gaurava K. Jaisawal·Christian Malacaria·Sridhar S. Manthripragada·Zaven Arzoumanian·Keith C. Gendreau
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Abstract

We present new timing and spectral analyses of PSR J1412+7922 (Calvera) and PSR J1849-0001, which are only seen as pulsars in X-rays, based on observations conducted with the Neutron Star Interior Composition Explorer (NICER). We obtain updated and substantially improved pulse ephemerides compared to previous X-ray studies, as well as spectra that can be well-fit by simple blackbodies and/or a power law. Our refined timing measurements enable deeper searches for pulsations at other wavelengths and sensitive targeted searches by LIGO/Virgo for continuous gravitational waves from these neutron stars. Using the sensitivity of LIGO's first observing run, we estimate constraints that a gravitational wave search of these pulsars would obtain on the size of their mass deformation and r-mode fluid oscillation.

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Slavko Bogdanov, Wynn C. G. Ho, Teruaki Enoto, Sebastien Guillot, Alice K. Harding, Gaurava K. Jaisawal, Christian Malacaria, Sridhar S. Manthripragada, Zaven Arzoumanian, Keith C. Gendreau. 2019-02-04. Neutron Star Interior Composition Explorer X-ray Timing of the Radio and Gamma-ray Quiet Pulsars PSR J1412+7922 AND PSR J1849-0001. https://doi.org/10.3847/1538-4357%2Fab1b2e

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