24 research outputs found

    Search for gravitational waves from Scorpius X-1 in the second Advanced LIGO observing run with an improved hidden Markov model

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    We present results from a semicoherent search for continuous gravitational waves from the low-mass x-ray binary Scorpius X-1, using a hidden Markov model (HMM) to track spin wandering. This search improves on previous HMM-based searches of LIGO data by using an improved frequency domain matched filter, the J-statistic, and by analyzing data from Advanced LIGO's second observing run. In the frequency range searched, from 60 to 650 Hz, we find no evidence of gravitational radiation. At 194.6 Hz, the most sensitive search frequency, we report an upper limit on gravitational wave strain (at 95% confidence) of h095%=3.47×10-25 when marginalizing over source inclination angle. This is the most sensitive search for Scorpius X-1, to date, that is specifically designed to be robust in the presence of spin wandering. © 2019 American Physical Society

    Erratum: "A Gravitational-wave Measurement of the Hubble Constant Following the Second Observing Run of Advanced LIGO and Virgo" (2021, ApJ, 909, 218)

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    Exploring the relationship between caffeine intake and essential tremor

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    10.1016/j.jns.2006.09.007Journal of the Neurological Sciences2511-Feb98-101JNSC

    Differential effect of caffeine intake in subjects with genetic susceptibility to Parkinson's Disease

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    10.1038/srep15492Scientific Reports51549

    Expanded FMR1 alleles are rare in idiopathic Parkinson's disease [3]

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    10.1007/s10048-004-0200-5Neurogenetics6151-5

    Genetic analysis of SCA2, 3 and 17 in idiopathic Parkinson's disease

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    10.1016/j.neulet.2006.04.019Neuroscience Letters4031-211-14NELE

    Analysis of LRRK2 functional domains in nondominant Parkinson disease

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    10.1212/01.wnl.0000180517.70572.37Neurology6581319-132
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