Results 111 to 120 of about 3,488,609 (297)

Weakened Magnetic Braking in the Exoplanet Host Star 51 Peg

The Astrophysical Journal Letters
The consistently low activity level of the old solar analog 51 Peg not only facilitated the discovery of the first hot Jupiter, but also led to the suggestion that the star could be experiencing a magnetic grand minimum.
Travis S. Metcalfe, Klaus G. Strassmeier, Ilya V. Ilyin, Derek Buzasi, Oleg Kochukhov, Thomas R. Ayres, Sarbani Basu, Ashley Chontos, Adam J. Finley, Victor See, Keivan G. Stassun, Jennifer L. van Saders, Aldo G. Sepulveda, George R. Ricker   +13 more
doaj   +1 more source

Probing magnetic fields in stars: ACOR, an oscillation framework including rotation and magnetism

Astronomy & Astrophysics
Context. Understanding the role of internal magnetic fields in stars remains a major challenge for the description of angular momentum transport and stellar evolution.
Fort A., Ouazzani R.-M., Barrault L., Manchon L., Petitdemange L.   +4 more
doaj   +1 more source

HD 158450: A MAGNETIC CHEMICALLY PECULIAR STAR IN A YOUNG STELLAR GROUP

Odessa Astronomical Publications, 2008
We report on the discovery of the Zeeman resolved spectral lines, corresponding to the very large magnetic field modulus [H] = 11.1 kG, in the spectrum of the chemically peculiar star HD 158450 belonging to the recently discovered Mamajek 2 stellar group.
N. A. Drake, E. G. Jilinski, V. G. Ortega, R. de la Reza, B. Bazzanella   +4 more
doaj   +1 more source

Posterior Disconnection Syndrome in Early‐Stage Adult‐Onset Cerebral Adrenoleukodystrophy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Adult‐onset cerebral adrenoleukodystrophy is potentially treatable but often difficult to recognize before advanced cerebral involvement. Herein, we describe three men with early‐stage disease who initially presented with subtle visual complaints rather than subcortical dementia. Targeted neuropsychological testing revealed higher‐order visual
Kazuto Katsuse, Takashi Matsukawa, Yumiko Nakamura, Kazuo Kakinuma, Shoko Ota, Ryo Hara, Saki Nakashima, Kaoru Ito, Yutaro Nakamori, Toshiyuki Kakumoto, Masashi Hamada, Shigenori Kanno, Kyoko Suzuki, Tatsushi Toda   +13 more
wiley   +1 more source

Equilibria and oscillations of magnetised neutron stars

, 2010
We investigate equilibrium configurations and oscillation spectra of neutron stars,modelled as rotating magnetised fluid bodies in Newtonian gravity. We also explorethe idea that these model neutron stars could have dynamics analogous to rigid-bodyfree ...
Lander, Samuel Kenneth
core   +1 more source

Magnetohydrodynamic instabilities in stellar radiative regions

Astronomy & Astrophysics
Context. Space missions such as Kepler have brought new constraints, along with new questions, on stellar evolution. A key issue is the unexpected spin-down of low-mass stellar cores, pointing to an efficient angular momentum transport mechanism in which
Durepaire V., Petitdemange L., Belkacem K., Guseva A., Manchon L., Hollerbach R., Daniel F.   +6 more
doaj   +1 more source

Stage‐Specific Patterns of Imaging and Non‐Motor Biomarkers in Spinocerebellar Ataxia Type 3

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Advancements in disease‐modifying therapies for spinocerebellar ataxia Type 3 (SCA3) underscore the need for robust biomarkers to monitor disease progression and evaluate treatment efficacy. Although motor phenotypes have been well characterized, less is known about non‐motor and imaging‐based features across different disease stages.
Chun Li, Zhi‐Xian Ye, Xuan‐Yu Chen, Liang‐Liang Qiu, Zhi‐li Chen, Yu‐Sen Qiu, Wei Lin, Ru‐Ying Yuan, Xin‐Tong Yu, Chun‐Yu Huang, Xin‐Yuan Chen, Min‐Ting Lin, Jian‐Ping Hu, Wan‐Jin Chen, Ning Wang, Shao‐Bo Yao, Shi‐Rui Gan, Ying Fu   +17 more
wiley   +1 more source

Associations Between Biomarkers of Alzheimer's Disease and Sleep in Cognitively Unimpaired Older Adults

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Sleep disturbances have been implicated as a risk factor for developing Alzheimer's disease (AD), but evidence linking plasma AD biomarkers to sleep in cognitively unimpaired individuals remains limited. The present study examined associations between evening, morning, and overnight changes in plasma AD biomarkers and measures of ...
Cornelia Sauter, Hans Dorn, Julian Hellmann‐Regen, Ana Bueno‐Lopez, Verena van Ginneken, Heidi Danker‐Hopfe   +5 more
wiley   +1 more source

Testing the Rossby Paradigm: Weakened Magnetic Braking in Early K-type Stars

The Astrophysical Journal
There is an intricate relationship between the organization of large-scale magnetic fields by a stellar dynamo and the rate of angular momentum loss due to magnetized stellar winds. An essential ingredient for the operation of a large-scale dynamo is the
Travis S. Metcalfe, Pascal Petit, Jennifer L. van Saders, Thomas R. Ayres, Derek Buzasi, Oleg Kochukhov, Keivan G. Stassun, Marc H. Pinsonneault, Ilya V. Ilyin, Klaus G. Strassmeier, Adam J. Finley, Rafael A. García, Daniel Huber, Yuxi (Lucy) Lu, Victor See   +14 more
doaj   +1 more source

Artificial Intelligence in Systemic Sclerosis: Clinical Applications, Challenges, and Future Directions

Arthritis Care &Research, EarlyView.
Systemic sclerosis (SSc) is a rare autoimmune disease defined by immune dysregulation, vasculopathy, and progressive fibrosis of the skin and internal organs. Despite advances in care, major complications such as interstitial lung disease (ILD) and myocardial involvement remain the leading causes of morbidity and mortality.
Cristiana Sieiro Santos, José Miguel Sequí‐Sabater, Diego Benavent   +2 more
wiley   +1 more source