Numerical integrator for highly oscillatory differential equations based on the Neumann series

Posted by dbos Stanford

Kavli Affiliate: Grzegorz Madejski | First 5 Authors: Rafał Perczyński, Grzegorz Madejski, , , | Summary: We propose a third-order numerical integrator based on the Neumann series and the Filon quadrature, designed mainly for highly oscillatory partial differential equations. The method can be applied to equations that exhibit small or moderate oscillations; however, counter-intuitively, large […]


Continue.. Numerical integrator for highly oscillatory differential equations based on the Neumann series

Numerical integrator for highly oscillatory differential equations based on the Neumann series

Posted by dbos Stanford

Kavli Affiliate: Grzegorz Madejski | First 5 Authors: Rafał Perczyński, Grzegorz Madejski, , , | Summary: We propose a third-order numerical integrator based on the Neumann series and the Filon quadrature, designed mainly for highly oscillatory partial differential equations. The method can be applied to equations that exhibit small or moderate oscillations; however, counter-intuitively, large […]


Continue.. Numerical integrator for highly oscillatory differential equations based on the Neumann series

TESS Giants Transiting Giants V — Two hot Jupiters orbiting red-giant hosts

Posted by dbos MIT

Kavli Affiliate: Sara Seager | First 5 Authors: Filipe Pereira, Samuel K. Grunblatt, Angelica Psaridi, Tiago L. Campante, Margarida S. Cunha | Summary: In this work we present the discovery and confirmation of two hot Jupiters orbiting red-giant stars, TOI-4377 b and TOI-4551 b, observed by TESS in the southern ecliptic hemisphere and later followed-up […]


Continue.. TESS Giants Transiting Giants V — Two hot Jupiters orbiting red-giant hosts

Further Evidence for the ~ 9 s Pulsation in LS 5039 from NuSTAR and ASCA

Posted by dbos Tokyo

Kavli Affiliate: Tadayuki Takahashi | First 5 Authors: Kazuo Makishima, Nagomi Uchida, Hiroki Yoneda, Teruaki Enoto, Tadayuki Takahashi | Summary: The present study aims to reinforce the evidence for the ~9 s pulsation in the gamma-ray binary LS 5039, derived with a Suzaku observation in 2007 and that with NuSTAR in 2016 (Yoneda et al […]


Continue.. Further Evidence for the ~ 9 s Pulsation in LS 5039 from NuSTAR and ASCA

Highly Significant Detection of X-Ray Polarization from the Brightest Accreting Neutron Star Sco X-1

Posted by dbos MIT

Kavli Affiliate: Herman L. Marshall | First 5 Authors: Fabio La Monaca, Alessandro Di Marco, Juri Poutanen, Matteo Bachetti, Sara E. Motta | Summary: The Imaging X-ray Polarimetry Explorer measured with high significance the X-ray polarization of the brightest Z-source Sco X-1, resulting in the nominal 2-8 keV energy band in a polarization degree of […]


Continue.. Highly Significant Detection of X-Ray Polarization from the Brightest Accreting Neutron Star Sco X-1

Highly Significant Detection of X-Ray Polarization from the Brightest Accreting Neutron Star Sco X-1

Posted by dbos Stanford

Kavli Affiliate: Nicola Omodei | First 5 Authors: Fabio La Monaca, Alessandro Di Marco, Juri Poutanen, Matteo Bachetti, Sara E. Motta | Summary: The Imaging X-ray Polarimetry Explorer (IXPE) measured with high significance the X-ray polarization of the brightest Z-source Scorpius X-1, resulting in the nominal 2-8 keV energy band in a polarization degree of […]


Continue.. Highly Significant Detection of X-Ray Polarization from the Brightest Accreting Neutron Star Sco X-1

Extragalactic Magnetism with SOFIA (SALSA Legacy Program). VII. A tomographic view of far infrared and radio polarimetric observations through MHD simulations of galaxies

Posted by dbos Stanford

Kavli Affiliate: Susan E. Clark | First 5 Authors: Sergio Martin-Alvarez, Enrique Lopez-Rodriguez, Tara Dacunha, Susan E. Clark, Alejandro S. Borlaff | Summary: The structure of magnetic fields in galaxies remains poorly constrained, despite the importance of magnetism in the evolution of galaxies. Radio synchrotron and far-infrared dust polarization (FIR) polarimetric observations are the best […]


Continue.. Extragalactic Magnetism with SOFIA (SALSA Legacy Program). VII. A tomographic view of far infrared and radio polarimetric observations through MHD simulations of galaxies

Extragalactic Magnetism with SOFIA (SALSA Legacy Program). VII. A Tomographic View of Far-infrared and Radio Polarimetric Observations through MHD Simulations of Galaxies

Posted by dbos Stanford

Kavli Affiliate: Susan E. Clark | First 5 Authors: Sergio Martin-Alvarez, Enrique Lopez-Rodriguez, Tara Dacunha, Susan E. Clark, Alejandro S. Borlaff | Summary: The structure of magnetic fields in galaxies remains poorly constrained, despite the importance of magnetism in the evolution of galaxies. Radio synchrotron and far-infrared (FIR) polarization and polarimetric observations are the best […]


Continue.. Extragalactic Magnetism with SOFIA (SALSA Legacy Program). VII. A Tomographic View of Far-infrared and Radio Polarimetric Observations through MHD Simulations of Galaxies

Modeling the Morphology of Fast Radio Bursts and Radio Pulsars with fitburst

Posted by dbos MIT

Kavli Affiliate: Kiyoshi W. Masui | First 5 Authors: Emmanuel Fonseca, Ziggy Pleunis, Daniela Breitman, Ketan R. Sand, Bikash Kharel | Summary: We present a framework for modeling astrophysical pulses from radio pulsars and fast radio bursts (FRBs). This framework, called fitburst, generates synthetic representations of dynamic spectra that are functions of several physical and […]


Continue.. Modeling the Morphology of Fast Radio Bursts and Radio Pulsars with fitburst