Results 21 to 30 of about 67,610 (340)

Catalog of Magnetic White Dwarfs with Hydrogen Dominated Atmospheres

The 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, S. O. Kepler, Baybars Külebi, S. Jordan, A. D. Romero   +4 more
doaj   +1 more source

Star-planet magnetic interaction and activity in late-type stars with close-in planets

, 2012
Late-type stars interact with their close-in planets through their coronal magnetic fields. We introduce a theory for the interaction between the stellar and planetary fields focussing on the processes that release magnetic energy in the stellar coronae.
A. F. Lanza, Adams, Adams, Berger, Berger, Berger, Browning, Canto Martins, Catala, Chandrasekhar, Christensen, Cohen, Cohen, Cohen, Demoulin, Dixon, Donati, Ehrenreich, Fares, Fares, Finn, Flyer, Getman, Gonzalez, Gu, Hartman, Henry, Ip, Kashyap, Kopp, Lanza, Lanza, Lanza, Lanza, Lecavelier des Etangs, Lecavelier Des Etangs, Linsky, Low, McIvor, Miller, Moutou, Pillitteri, Poppenhaeger, Poppenhaeger, Poppenhaeger, Preusse, Priest, Priest, Reiners, Saar, Scharf, Shkolnik, Shkolnik, Shkolnik, Strassmeier, Taylor, Taylor, Vekstein, Vidotto, Vidotto, Vidotto, Vidotto, Vidotto, Walker, Winn, Wolfson, Woltjer, Zhang, Zhang   +68 more
core   +1 more source

18. Stellar magnetic fields [PDF]

Symposium - 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

Masers and Stellar Magnetic Fields [PDF]

Symposium - International Astronomical Union, 1990
Observations of circular polarization of molecular masers associated with late type giant and supergiant stars can be used to estimate the magnetic field strength in the masing region. Magnetic field strengths of ~ 5 mG are deduced for OH masers in circumstellar envelopes at distances of ~ 1016 cm from the star, and magnetic field strengths of ~ 50 G ...
openaire   +1 more source

Roadmap on the theoretical work of BinaMIcS [PDF]

, 2013
We review the different theoretical challenges concerning magnetism in interacting binary or multiple stars that will be studied in the BinaMIcS (Binarity and Magnetic Interactions in various classes of Stars) project during the corresponding ...
Alecian, E., collaboration, the BinaMIcS, Mathis, S., Neiner, C., Wade, G. A.   +4 more
core   +1 more source

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

The 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, Yan Li, Jie Su, Tao Wu, Yuetong Wang   +4 more
doaj   +1 more source

Torsional oscillations of neutron stars with highly tangled magnetic fields

, 2015
To determine the frequencies of magnetic oscillations in neutron stars with highly tangled magnetic fields, we derive the perturbation equations.
Sotani, Hajime
core   +1 more source

Magnetic Field - Stellar Winds Interaction [PDF]

Proceedings of the International Astronomical Union, 2014
AbstractAs per the recent study by the MiMeS collaboration, only about 10% of massive stars possess organized global magnetic fields, typically dipolar in nature. The competition between such magnetic fields and highly non-linear radiative forces that drive the stellar winds leads to a highly complex interaction.
openaire   +1 more source

RIPK4 function interferes with melanoma cell adhesion and metastasis

Molecular Oncology, EarlyView.
RIPK4 promotes melanoma growth and spread. RIPK4 levels increase as skin lesions progress to melanoma. CRISPR/Cas9‐mediated deletion of RIPK4 causes melanoma cells to form less compact spheroids, reduces their migratory and invasive abilities and limits tumour growth and dissemination in mouse models.
Norbert Wronski, Sławomir Lasota, Ewelina Madej, Anna A. Brożyna, Małgorzata Szczygieł, Agnieszka Harazin‐Lechowska, Jan Czerbniak, Janusz Rys, Jaroslaw Czyz, Agnieszka Wolnicka‐Glubisz   +9 more
wiley   +1 more source

Magnetic Field Monitoring of Four Massive A–F Supergiants

The 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, Mary Oksala, Coralie Neiner, Étienne Boucher, James A. Barron   +4 more
doaj   +1 more source