Search Results - "Watts, Anna L."

Thermonuclear Burst Oscillations by Watts, Anna L

“…Burst oscillations, a phenomenon observed in a significant fraction of Type I (thermonuclear) X-ray bursts, involve the development of highly asymmetric…”
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The Radius of PSR J0740+6620 from NICER with NICER Background Estimates by Salmi, Tuomo, Vinciguerra, Serena, Choudhury, Devarshi, Riley, Thomas E., Watts, Anna L., Remillard, Ronald A., Ray, Paul S., Bogdanov, Slavko, Guillot, Sebastien, Arzoumanian, Zaven, Chirenti, Cecilia, Dittmann, Alexander J., Gendreau, Keith C., Ho, Wynn C. G., Miller, M. Coleman, Morsink, Sharon M., Wadiasingh, Zorawar, Wolff, Michael T.

“…Abstract We report a revised analysis for the radius, mass, and hot surface regions of the massive millisecond pulsar PSR J0740+6620, studied previously with…”
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Colloquium : Measuring the neutron star equation of state using x-ray timing by Watts, Anna L., Andersson, Nils, Chakrabarty, Deepto, Feroci, Marco, Hebeler, Kai, Israel, Gianluca, Lamb, Frederick K., Miller, M. Coleman, Morsink, Sharon, Özel, Feryal, Patruno, Alessandro, Poutanen, Juri, Psaltis, Dimitrios, Schwenk, Achim, Steiner, Andrew W., Stella, Luigi, Tolos, Laura, van der Klis, Michiel

“…One of the primary science goals of the next generation of hard x-ray timing instruments is to determine the equation of state of matter at supranuclear…”
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A pitfall of piecewise-polytropic equation of state inference by Raaijmakers, Geert, Riley, Thomas E, Watts, Anna L

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X-PSI Parameter Recovery for Temperature Map Configurations Inspired by PSR J0030+0451 by Vinciguerra, Serena, Salmi, Tuomo, Watts, Anna L., Choudhury, Devarshi, Kini, Yves, Riley, Thomas E.

“…Abstract In the last few years, the NICER collaboration has provided mass and radius inferences, via pulse profile modeling, for two pulsars: PSR J0030+0451…”
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An Updated Mass–Radius Analysis of the 2017–2018 NICER Data Set of PSR J0030+0451 by Vinciguerra, Serena, Salmi, Tuomo, Watts, Anna L., Choudhury, Devarshi, Riley, Thomas E., Ray, Paul S., Bogdanov, Slavko, Kini, Yves, Guillot, Sebastien, Chakrabarty, Deepto, Ho, Wynn C. G., Huppenkothen, Daniela, Morsink, Sharon M., Wadiasingh, Zorawar, Wolff, Michael T.

“…Abstract In 2019 the NICER collaboration published the first mass and radius inferred for PSR J0030+0451, thanks to NICER observations, and consequent…”
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Detecting gravitational wave emission from the known accreting neutron stars by Watts, Anna L., Krishnan, Badri, Bildsten, Lars, Schutz, Bernard F.

“…Detection of gravitational waves from accreting neutron stars (NSs) in our Galaxy, due to ellipticity or internal oscillation, would be a breakthrough in our…”
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On the Dependence of the X-Ray Burst Rate on Accretion and Spin Rate by Cavecchi, Yuri, Watts, Anna L., Galloway, Duncan K.

“…Nuclear burning and its dependence on the mass accretion rate are fundamental ingredients for describing the complicated observational phenomenology of neutron…”
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Rotational effects in thermonuclear type I bursts: equatorial crossing and directionality of flame spreading by Cavecchi, Yuri, Watts, Anna L., Levin, Yuri, Braithwaite, Jonathan

“…In a previous study on thermonuclear (type I) bursts on accreting neutron stars, we addressed and demonstrated the importance of the effects of rotation,…”
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Atmospheric Effects on Neutron Star Parameter Constraints with NICER by Salmi, Tuomo, Vinciguerra, Serena, Choudhury, Devarshi, Watts, Anna L., Ho, Wynn C. G., Guillot, Sebastien, Kini, Yves, Dorsman, Bas, Morsink, Sharon M., Bogdanov, Slavko

“…Abstract We present an analysis of the effects of uncertainties in the atmosphere models on the radius, mass, and other neutron star parameter constraints for…”
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Exploring Waveform Variations among Neutron Star Ray-tracing Codes for Complex Emission Geometries by Choudhury, Devarshi, Watts, Anna L., Dittmann, Alexander J., Miller, M. Coleman, Morsink, Sharon M., Salmi, Tuomo, Vinciguerra, Serena, Bogdanov, Slavko, Guillot, Sebastien, Wolff, Michael T., Arzoumanian, Zaven

“…Abstract Pulse profile modeling (PPM), the technique used to infer mass, radius, and geometric parameters for rotation-powered millisecond pulsars using data…”
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Burning in the Tail: Implications for a Burst Oscillation Model by Chambers, Frank R. N., Watts, Anna L., Keek, Laurens, Cavecchi, Yuri, Garcia, Ferran

“…Accreting neutron stars (NSs) can exhibit high-frequency modulations, known as burst oscillations, in their light curves during thermonuclear X-ray bursts…”
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Constraints on neutron star crusts from oscillations in giant flares by Steiner, Andrew W, Watts, Anna L

“…We show that the fundamental seismic shear mode, observed as a quasiperiodic oscillation in giant flares emitted by highly magnetized neutron stars, is…”
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The Radius of the High-mass Pulsar PSR J0740+6620 with 3.6 yr of NICER Data by Salmi, Tuomo, Choudhury, Devarshi, Kini, Yves, Riley, Thomas E., Vinciguerra, Serena, Watts, Anna L., Wolff, Michael T., Arzoumanian, Zaven, Bogdanov, Slavko, Chakrabarty, Deepto, Gendreau, Keith, Guillot, Sebastien, Ho, Wynn C. G., Huppenkothen, Daniela, Ludlam, Renee M., Morsink, Sharon M., Ray, Paul S.

“…Abstract We report an updated analysis of the radius, mass, and heated surface regions of the massive pulsar PSR J0740+6620 using Neutron Star Interior…”
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A NICER View of PSR J1231−1411: A Complex Case by Salmi, Tuomo, Deneva, Julia S., Ray, Paul S., Watts, Anna L., Choudhury, Devarshi, Kini, Yves, Vinciguerra, Serena, Cromartie, H. Thankful, Wolff, Michael T., Arzoumanian, Zaven, Bogdanov, Slavko, Gendreau, Keith, Guillot, Sebastien, Ho, Wynn C. G., Morsink, Sharon M., Cognard, Ismaël, Guillemot, Lucas, Theureau, Gilles, Kerr, Matthew

“…Abstract Recent constraints on neutron star mass and radius have advanced our understanding of the equation of state (EOS) of cold dense matter. Some of them…”
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Constraining the Dense Matter Equation of State with New NICER Mass–Radius Measurements and New Chiral Effective Field Theory Inputs by Rutherford, Nathan, Mendes, Melissa, Svensson, Isak, Schwenk, Achim, Watts, Anna L., Hebeler, Kai, Keller, Jonas, Prescod-Weinstein, Chanda, Choudhury, Devarshi, Raaijmakers, Geert, Salmi, Tuomo, Timmerman, Patrick, Vinciguerra, Serena, Guillot, Sebastien, Lattimer, James M.

“…Abstract Pulse profile modeling of X-ray data from the Neutron Star Interior Composition Explorer is now enabling precision inference of neutron star mass and…”
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The 2004 Hyperflare from SGR 1806–20: Further Evidence for Global Torsional Vibrations by Strohmayer, Tod E, Watts, Anna L

“…We report an analysis of archival RXTE data from the 2004 December hyperflare from SGR 1806-20. In addition to the -90 Hz QPO first discovered by Israel et…”
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Waves in thin oceans on oblate neutron stars by van Baal, Bart F A, Chambers, Frank R N, Watts, Anna L

“…ABSTRACT Waves in thin fluid layers are important in various stellar and planetary problems. Due to rapid rotation such systems will become oblate, with a…”
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Discovery of Fast X-Ray Oscillations during the 1998 Giant Flare from SGR 1900+14 by Strohmayer, Tod E, Watts, Anna L

“…We report the discovery of complex high-frequency variability during the 1998 August 27 giant flare from SGR 1900+14 using the Rossi X-Ray Timing Explorer…”
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A NICER View of the Nearest and Brightest Millisecond Pulsar: PSR J0437–4715 by Choudhury, Devarshi, Salmi, Tuomo, Vinciguerra, Serena, Riley, Thomas E., Kini, Yves, Watts, Anna L., Dorsman, Bas, Bogdanov, Slavko, Guillot, Sebastien, Ray, Paul S., Reardon, Daniel J., Remillard, Ronald A., Bilous, Anna V., Huppenkothen, Daniela, Lattimer, James M., Rutherford, Nathan, Arzoumanian, Zaven, Gendreau, Keith C., Morsink, Sharon M., Ho, Wynn C. G.

“…Abstract We report Bayesian inference of the mass, radius, and hot X-ray emitting region properties—using data from the Neutron Star Interior Composition…”
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