Astrophys. J., 877, 69-69 (2019/June-1)
Neutron Star Interior Composition Explorer X-ray timing of the radio and γ-ray quiet pulsars PSR J1412+7922 and PSR J1849-0001.
BOGDANOV S., HO W.C.G., ENOTO T., GUILLOT S., HARDING A.K., JAISAWAL G.K., MALACARIA C., MANTHRIPRAGADA S.S., ARZOUMANIAN Z. and GENDREAU K.C.
Abstract (from CDS):
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. 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 the Laser Interferometer Gravitational-Wave Observatory (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 be obtained on the size of their mass deformation and r-mode fluid oscillation.
© 2019. The American Astronomical Society. All rights reserved.
gravitational waves - pulsars: general - pulsars: individual: (PSR J1412+7922, PSR J1849-0001) - stars: neutron - X-rays: stars
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