Results 51 to 60 of about 5,710 (349)
The Astrophysical JournalStellar magnetic fields have a major impact on space weather around exoplanets orbiting low-mass stars. From an analysis of Zeeman-broadened Fe i lines measured in near-infrared SDSS/APOGEE spectra, mean magnetic fields are determined for a sample of 29 ...
Fábio Wanderley +10 more
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Rotational Components of the Sun’s Mean Field
The Astrophysical Journal, 2023 This paper uses wavelet transforms to look for the rotational frequencies of the Sun’s mean line-of-sight magnetic field. For a sufficiently high wavelet frequency, the spectra of the dipole, quadrupole, and hexapole field components each show a time ...
Neil R. Sheeley Jr.
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Application of a magnetic-field-induced transition in Fe X to solar and stellar coronal magnetic field measurements [PDF]
, 2022 Yajie Chen +5 more
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The decay of stellar magnetic fields [PDF]
Monthly Notices of the Royal Astronomical Society, 1984 Etude de decroissance ohmique des champs magnetiques dans des modeles stellaires polytropiques et proches lorsque le champ doit satisfaire l'equation d'equilibre ...
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Posterior Cortical Atrophy in the Asia‐Pacific: A Report From the PCA Asian Workgroup
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Posterior Cortical Atrophy (PCA) is a distinct dementia syndrome primarily affecting spatial abilities and visual processing. It is associated with degeneration in the posterior part of the brain. PCA is subclassified into PCA‐pure and PCA‐plus syndromes based on consensus criteria.
Yuttachai Likitjaroen +11 more
wiley +1 more source
The Astrophysical JournalMagnetic activity in solar-like stars shows a systematic dependence on stellar rotation rate, known as the “activity–rotation relationship.” Recent observations further reveal that large-scale surface magnetic fields in solar-like stars are ...
Ryota Shimada, Takaaki Yokoyama
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Analysis of Solar-like X-class Flare on Wolf 359 Observed Simultaneously with TESS and XMM-Newton
The Astrophysical Journal, 2023 We present an analysis of a flare on the Wolf 359 star based on simultaneous observations of Transiting Exoplanet Survey Satellite and XMM-Newton. A stellar flare with energy comparable to an X-class solar flare is analyzed on this star for the first ...
M. Pietras +5 more
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Magnetic Fields in Stellar Astrophysics
, 2009 This is a white paper submitted to the Stars and Stellar Evolution (SSE) Science Frontier Panel (SFP) of the NRC's 2010 Astronomy and Astrophysics Decadal Survey. The white paper is endorsed by the NSF Physics Frontier Center for Magnetic Self-Organization in Laboratory and Astrophysical Plasmas (CMSO).
Uzdensky, Dmitri +4 more
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Stellar dynamics: Rotation, convection, and magnetic fields [PDF]
, 2015 Stars are changing entities in a constant evolution during their lives. At non-secular time scales (from seconds to years) the effect of dynamical processes such as convection, rotation, and magnetic fields can modify the stellar oscillations. Convection excites acoustic modes in solar-like stars, while rotation and magnetic fields can perturb the ...
Mathur, S., Ballot, J., Garcia, R. A.
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Annals of Clinical and Translational Neurology, EarlyView.Epigenetic reprogramming in hematopoietic stem and progenitor cells (HSPCs) and downstream myeloid cells, mediated by H3.3 downregulation and endogenous retroelement (ERE) overexpression, contributes to the progression of multiple sclerosis (MS). ABSTRACT Background Skewed myelopoiesis in the bone marrow has been identified as a key driver of multiple ...
Li‐Mei Xiao +6 more
wiley +1 more source