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Browsing by Subject "Stars: magnetic field"

Browsing by Subject "Stars: magnetic field"

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  • Characterization of the HD 219134 multi-planet system I. Observations of stellar magnetism, wind, and high-energy flux 
    Folsom, C. P; Fossati, L; Wood, B. E; Sreejith, A. G; Cubillos, P. E; Vidotto, A. A; Alecian, E; Girish, V; Lichtenegger, H; Murthy, J; Petit, P; Valyavin, G (Oxford University Press on behalf of the Royal Astronomical Society, 2018-12)
    HD 219134 hosts several planets, with seven candidates reported, and the two shortest period planets are rocky (4–5 M⊕) and transit the star. Here, we present contemporaneous multiwavelength observations of the star ...
  • Confirmation of two magnetic cataclysmic variables as polars: 1RXS J174320.1−042953 and YY Sex 
    Rawat, Nikita; Pandey, J. C; Joshi, Arti; Potter, Stephen B; Hojaev, Alisher S; De Becker, Michael; Rao, Srinivas M; Yadava, Umesh (Oxford University Press on behalf of Royal Astronomical Society, 2023-05)
    We present our analysis of new and archived observations of two candidate magnetic cataclysmic variables, namely 1RXS J174320.1−042953 and YY Sex. 1RXS J174320.1−042953 was observed in two distinctive high and low states ...
  • First detection of a magnetic field in low-luminosity B[e] stars New scenarios for the nature and evolutionary stages of FS CMa stars 
    Korcakova, D; Sestito, F; Manset, N; Kroupa, P; Votruba, V; Slechta, M; Danford, S; Dvorakova, N; Raj, A; Chojnowski, S. D; Singh, H. P (EDP Sciences, 2022-03)
    We report the first detection of the magnetic field in a star of FS CMa type, a subgroup of objects characterized by the B[e] phenomenon. The split of magnetically sensitive lines in IRAS 17449+2320 determines the magnetic ...
  • Simulation of the small-scale magnetism in main-sequence stellar atmospheres 
    Salhab, R. G; Steiner, O; Berdyugina, S. V; Freytagz, B; Rajaguru, S. P; Steffen, M (EDP Sciences, 2018-06)
    Context. Observations of the Sun tell us that its granular and subgranular small-scale magnetism has significant consequences for global quantities such as the total solar irradiance or convective blueshift of spectral ...
  • SWIFT J0503.7-2819: a nearly synchronous intermediate polar below the period gap? 
    Rawat, Nikita; Pandey, J. C; Joshi, Arti; Scaringi, Simone; Yadava, Umesh (Oxford University Press on behalf of Royal Astronomical Society, 2022-12)
    Based on the X-ray observations from XMM–Newton and Swift, and optical observations from Transiting Exoplanet Survey Satellite (TESS) and AAVSO, we present temporal and spectral properties of probable intermediate polar ...

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