Results 31 to 40 of about 3,312,921 (291)

Magnetic Field Monitoring of Four Massive A–F Supergiants

open access: yesThe Astrophysical Journal Letters
We report magnetic field measurements spanning about 15 yr of four massive (7.5–15 M _⊙ ) supergiant stars: α Per (HD 20902, F5Iab), α Lep (HD 36673A, F0Ib), η Leo (HD 87737, A0Ib) and 13 Mon (HD 46300, A1Ib).
Gregg A. Wade   +4 more
doaj   +1 more source

The decay of stellar magnetic fields [PDF]

open access: yesMonthly 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 ...
openaire   +1 more source

Synergistic perspectives—How single‐molecule biophysics complement biochemical understanding

open access: yesFEBS Letters, EarlyView.
In this review, we discuss how ensemble biochemistry and single‐molecule approaches are complementary, outline commonly used single‐molecule techniques, and illustrate their relevance through two representative case studies: chromatin organization by SMC complexes and pathway choice during DNA double‐strand break repair.
Sara De Bragança   +2 more
wiley   +1 more source

Development and application of a global magnetic field evolution model for the solar corona [PDF]

open access: yes, 2009
Magnetic fields are fundamental to the structure and dynamics of the Sun’s corona. Observations show them to be locally complex, with highly sheared and twisted fields visible in solar filaments/prominences.
Yeates, Anthony Robinson
core   +2 more sources

Exploring the Small-scale Magnetic Fields of the Solar Analog KIC 8006161 Using Asteroseismology

open access: yesThe Astrophysical Journal
The magnetic field is a significant and universal physical phenomenon in modern astrophysics. Small-scale magnetic fields are very important in the stellar atmosphere. They are ubiquitous and strongly couple with acoustic waves. Therefore, their presence
Guifang Lin   +4 more
doaj   +1 more source

Catalog of Magnetic White Dwarfs with Hydrogen Dominated Atmospheres

open access: yesThe Astrophysical Journal, 2023
White dwarfs are excellent research laboratories as they reach temperatures, pressures, and magnetic fields that are unattainable on Earth. To better understand how these three physical parameters interact with each other and with other stellar features,
L. L. Amorim   +4 more
doaj   +1 more source

Magnetic Fields and Stellar Evolution [PDF]

open access: yesSymposium - International Astronomical Union, 1981
Magnetic fields are now observed or inferred in a wide variety of stellar objects. The class of early-type stars with strong large-scale fields extends from types B to F, with effective fields from 300 gauss up to several x 104 gauss (Borra and Landstreet 1980).
openaire   +1 more source

Flow Enabled Target Capture Halbach‐based magnetic enrichment increases circulating tumor cell capture from blood in metastatic cancer patients

open access: yesMolecular Oncology, EarlyView.
Pair‐wise comparison of the CellSearch and FETCH enrichment technologies for circulating tumor cells (CTCs) from metastatic breast, prostate, and small cell lung cancer patients shows an increased capture of CTCs using FETCH enrichment. The clinical implementation of circulating tumor cells (CTCs) as a predictive tool for therapy efficacy in the ...
Michiel Stevens   +6 more
wiley   +1 more source

Searching for Low-mass Stars with Magnetically Induced Hyperinflated Radii

open access: yesThe Astrophysical Journal
Precise empirical estimates of stellar radii have revealed that the radii of certain low-mass stars are inflated relative to stellar structure predictions: the largest inflations occur in magnetically active stars.
D. J. Mullan, J. MacDonald
doaj   +1 more source

18. Stellar magnetic fields [PDF]

open access: yesSymposium - International Astronomical Union, 1958
A report is given of a ten-year observational program directed toward the discovery and investigation of the magnetic fields of stars through the Zeeman effect in their spectra. The emphasis has been on the sharp-line stars of type A, of which ten have been found to show irregular magnetic fluctuations without reversal of polarity, ten others to ...
openaire   +1 more source

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