The magnetic fields of β Coronae Borealis and the early F-star σ Bootis

Autor: J M Seach, S C Marsden, B D Carter, C Neiner, C P Folsom

Publikováno v: Monthly Notices of the Royal Astronomical Society. 513:4278-4294

The study of magnetism in stars close to the transition from fossil to dynamo magnetic fields is important for understanding the nature of the stellar dynamo and dynamics of the outer atmosphere. We present surface magnetic maps for two stars that ar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f68d8265e67971151faae20e448bc7f2
https://doi.org/10.1093/mnras/stac1173

Linking chromospheric activity and magnetic field properties for late-type dwarf stars

Autor: E L Brown, S V Jeffers, S C Marsden, J Morin, S Boro Saikia, P Petit, M M Jardine, V See, A A Vidotto, M W Mengel, M N Dahlkemper, null the BCool Collaboration

Publikováno v: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 514(3), 4300-4319
Monthly Notices of the Royal Astronomical Society, 2022, 514 (3), pp.4300-4319. ⟨10.1093/mnras/stac1291⟩

Spectropolarimetric data allow for simultaneous monitoring of stellar chromospheric $\log{R^{\prime}_{\rm{HK}}}$ activity and the surface-averaged longitudinal magnetic field, $B_l$, giving the opportunity to probe the relationship between large-scal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70e9c437c42a9d26cc91dec381f75ec3
https://hdl.handle.net/10023/25360

Topological changes in the magnetic field of LQ Hya during an activity minimum

Autor: J. J. Lehtinen, M. J. Käpylä, T. Hackman, O. Kochukhov, T. Willamo, S. C. Marsden, S. V. Jeffers, G. W. Henry, L. Jetsu

Previous studies have related surface temperature maps, obtained with the Doppler imaging (DI) technique, of LQ Hya with long-term photometry. We compare surface magnetic field maps, obtained with the Zeeman Doppler imaging (ZDI) technique, with cont

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7de804528fc2c6fe0eb4e8bd0f6549ab
http://arxiv.org/abs/1909.11028

The Optical Properties of Equatorial Cirrus from Observations in the ARM Pilot Radiation Observation Experiment

Autor: S. C. Marsden, R. T. Austin, P. J. Manson, C. M. R. Platt, G. R. Patterson, Stuart A. Young, James H. Churnside

Publikováno v: Journal of the Atmospheric Sciences. 55:1977-1996

The optical properties of equatorial cirrus were studied during a three-week period of the ARM Pilot Radiation and Observation Experiment at Kavieng, Papua New Guinea, in January and February 1993. The experiment consisted of vertical lidar (532 nm)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::31c7faf4ee9d853e2ecc97d39c507c91
https://doi.org/10.1175/1520-0469(1998)055<1977:topoec>2.0.co

High-Resolution Magnetic Field Measurements of RR Lyrae Stars with SemPol

Autor: E. Guggenberger, K. Kolenberg, S. C. Marsden, I. A. Waite, H. F. Henrichs, T. Lüftinger, Joyce Ann Guzik, Paul A. Bradley

Publikováno v: Stellar Pulsation : Challenges for Theory and Observation: proceedings of the international conference, Santa Fe, New Mexico, 31 May-5 June 2009, 278-280
STARTPAGE=278;ENDPAGE=280;TITLE=Stellar Pulsation : Challenges for Theory and Observation

For more than 30 years, there have been attempts to explain the Blazhko effect in RR Lyrae stars with the presence of strong magnetic fields (Mestel 1975, Cousins 1983, Shibahashi & Takata 1995, Shibahashi 2000). These so‐called magnetic models are

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63bdde5d3ea06229fe2a180dc170ee0f
https://hdl.handle.net/11245/1.313531