Results 101 to 110 of about 1,454,993 (340)

Dynamically Forming Extremely Low-mass White Dwarf Binaries in Wide Orbits

The Astrophysical Journal, 2023
The detection of a 0.2 M _⊙ extremely low-mass white dwarf (EW) in a wide orbit ( P _orb ≈ 450 days) with a 1.1 M _⊙ main-sequence companion, KIC 8145411, challenges our current understanding of how EWs form. The traditional channel for EW formation, via
Ambreesh Khurana, Chirag Chawla, Sourav Chatterjee   +2 more
doaj   +1 more source

Multimessenger Bayesian parameter inference of a binary neutron star merger [PDF]

Monthly Notices of the Royal Astronomical Society: Letters, 2018
The combined detection of a binary neutron star merger in both gravitational waves (GWs) and electromagnetic (EM) radiation spanning the entire spectrum – GW170817/AT2017gfo/GRB170817A – marks a breakthrough in the field of multimessenger astronomy ...
M. Coughlin, T. Dietrich, B. Margalit, B. Metzger   +3 more
semanticscholar   +1 more source

Impact of APOE ε4 Genotype Load on Cognitive Function and Lipid Metabolism in Patients With Cerebral Small Vessel Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Apolipoprotein ε4 (APOE ε4) is a potent genetic risk factor for Alzheimer's disease (AD). However, its role in cerebral small vessel disease (CSVD) remains unclear. Given the clinical and pathological similarities between CSVD and AD, this study aimed to investigate the associations of APOE ε4 gene dosage with cognitive function and
Tingru Jin, Haocheng Yang, Feng Liu, Sihao Lin, Junru Hu, Jian Wang, Yulan Gou   +6 more
wiley   +1 more source

Asymmetric supernova in hierarchical multiple star systems and application to J1903+0327

, 2012
We develop a method to analyze the effect of an asymmetric supernova on hierarchical multiple star systems and we present analytical formulas to calculate orbital parameters for surviving binaries or hierarchical triples and runaway velocities for their ...
Bagchi, Bejger, Bhattacharya, Blaauw, Boersma, Champion, D. P. Caputo, Freire, Gunn, Hills, J. T. Pijloo, Kalogera, Phinney, Podsiadlowski, Pols, Portegies Zwart, S. F. Portegies Zwart, Shklovskii, Tauris, Tokovinin, van den Heuvel, Wheeler, Zhuchkov   +22 more
core   +1 more source

Delayed and Displaced: The Impact of Binary Interactions on Core-collapse SN Feedback

The Astronomical Journal
Core-collapse supernova feedback models in hydrodynamical simulations typically assume that all stars evolve as single stars. However, the majority of massive stars are formed in binaries and multiple systems, where interactions with a companion can ...
Tom Wagg, Julianne J. Dalcanton, Mathieu Renzo, Katelyn Breivik, Matthew E. Orr, Adrian M. Price-Whelan, Akaxia Cruz, Alyson Brooks, Ulrich P. Steinwandel, Eric C. Bellm   +9 more
doaj   +1 more source

Mass Ejection from the Remnant of a Binary Neutron Star Merger: Viscous-radiation Hydrodynamics Study [PDF]

Astrophysical Journal, 2017
We perform long-term general relativistic neutrino radiation hydrodynamics simulations (in axisymmetry) for a massive neutron star (MNS) surrounded by a torus, which is a canonical remnant formed after the binary neutron star merger. We take into account
S. Fujibayashi, K. Kiuchi, N. Nishimura, Y. Sekiguchi, M. Shibata   +4 more
semanticscholar   +1 more source

Lessons Learned: Quality Analysis of Optical Coherence Tomography in Neuromyelitis Optica

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Optical coherence tomography (OCT)‐derived retina measurements are markers for neuroaxonal visual pathway status. High‐quality OCT scans are essential for reliable measurements, but their acquisition is particularly challenging in eyes with severe visual impairment, as often observed in neuromyelitis optica spectrum disorders ...
Hadi Salih, Sara Samadzadeh, Charlotte Bereuter, Seyedamirhosein Motamedi, Claudia Chien, Pablo Villoslada, Hadas Stiebel‐Kalish, Nasrin Asgari, Yang Mao‐Draayer, Marius Ringelstein, Joachim Havla, Marco Aurélio Lana Peixoto, Ho Jin Kim, Jacqueline Palace, Maria Isabel Leite, Srilakshmi M. Sharma, Fereshteh Ashtari, Rahele Kafieh, Lekha Pandit, Orhan Aktas, Philipp Albrecht, Letizia Leocani, Itay Lotan, Sasitorn Siritho, Jérôme de Seze, Romain Marignier, Caroline Froment Tilikete, Denis Bernardi Bichuetti, Ivan Maynart Tavares, Ayse Altintas, Anu Jacob, Saif Huda, Ibis Soto de Castillo, Lawrence J. Cook, Michael R. Yeaman, Axel Petzold, Alexander U. Brandt, Friedemann Paul, Frederike C. Oertel, Hanna G. Zimmermann, with the Guthy Jackson Charitable Foundation—International Clinical Consortium and CROCTINO Collaborators   +40 more
wiley   +1 more source

The enigmatic central star of the planetary nebula PRTM 1

, 2012
The central star of the planetary nebula PRTM 1 (PN G243.8-37.1) was previously found to be variable by M. Pena and colleagues. As part of a larger programme aimed towards finding post common-envelope binary central stars we have monitored the central ...
Afšar, Appenzeller, B. Miszalski, Balick, Bond, Bond, Bond, Bond, Chu, Ciardullo, Corradi, Crowther, D. Jones, De Marco, De Marco, De Marco, Feibelman, Fontaine, Frew, H. M. J. Boffin, Hambly, Jones, Lopez, Miszalski, Miszalski, Miszalski, Miszalski, Miszalski, Moe, Méndez, Méndez, Méndez, Méndez, Napiwotzki, Nordhaus, Paczynski, Pasquini, Pena, Pena, Sabbadin, Schwarz, Schönberner, Soker, Soker, Sorensen, Tyndall   +45 more
core   +1 more source

Hidden Binaries in Star-forming Regions

The Astrophysical Journal
A significant fraction of, and possibly all, stars form in binary or multiple systems. For solar-mass stars in the Galactic field, the distribution of orbital separations is log-normal over 7 orders of magnitude, from 10 ^−2  to 10 ^5 au.
Mary H. Rawcliffe, Nathan Griffiths-Janvier, Richard J. Parker   +2 more
doaj   +1 more source

The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/Virgo GW170817. IV. Detection of Near-infrared Signatures of r-process Nucleosynthesis with Gemini-South [PDF]

, 2017
We present a near-infrared spectral sequence of the electromagnetic counterpart to the binary neutron star merger GW170817 detected by Advanced Laser Interferometer Gravitational-wave Observatory (LIGO)/Virgo.
R. Chornock, E. Berger, D. Kasen, D. Kasen, P. Cowperthwaite, P. Cowperthwaite, M. Nicholl, V. Villar, K. Alexander, P. Blanchard, T. Eftekhari, W. Fong, R. Margutti, P. G. Williams, J. Annis, D. Brout, Duncan A. Brown, H. Chen, M. Drout, B. Farr, B. Farr, R. Foley, J. Frieman, J. Frieman, Chris L. Fryer, K. Herner, D. Holz, R. Kessler, T. Matheson, B. Metzger, E. Quataert, A. Rest, A. Rest, M. Sako, D. Scolnic, N. Smith, M. Soares-Santos, M. Soares-Santos   +37 more
semanticscholar   +1 more source