Observational evidence for enhanced magnetic activity of superflare stars

Christoffer Karoff; Mads Faurschou Knudsen; Peter De Cat; Alfio Bonanno; Alexandra Fogtmann-Schulz; Jianning Fu; Antonio Frasca; Fadil Inceoglu; Jesper Olsen; Yong Zhang; Yonghui Hou; Yuefei Wang; Jianrong Shi; Wei Zhang

doi:10.1038/ncomms11058

Nature Communications (Mar 2016)

Observational evidence for enhanced magnetic activity of superflare stars

Christoffer Karoff,
Mads Faurschou Knudsen,
Peter De Cat,
Alfio Bonanno,
Alexandra Fogtmann-Schulz,
Jianning Fu,
Antonio Frasca,
Fadil Inceoglu,
Jesper Olsen,
Yong Zhang,
Yonghui Hou,
Yuefei Wang,
Jianrong Shi,
Wei Zhang

Affiliations

Christoffer Karoff: Department of Geoscience, Aarhus University, Høegh-Guldbergs Gade 2
Mads Faurschou Knudsen: Department of Geoscience, Aarhus University, Høegh-Guldbergs Gade 2
Peter De Cat: Royal Observatory of Belgium, Ringlaan 3
Alfio Bonanno: INAF-Osservatorio Astrofisico di Catania
Alexandra Fogtmann-Schulz: Department of Geoscience, Aarhus University, Høegh-Guldbergs Gade 2
Jianning Fu: Department of Astronomy, Beijing Normal University
Antonio Frasca: INAF-Osservatorio Astrofisico di Catania
Fadil Inceoglu: Department of Geoscience, Aarhus University, Høegh-Guldbergs Gade 2
Jesper Olsen: Department of Physics, AMS, 14C Dating Centre, Aarhus University, Ny Munkegade 120
Yong Zhang: Nanjing Institute of Astronomical Optics and Technology, National Astronomical Observatories, Chinese Academy of Sciences
Yonghui Hou: Nanjing Institute of Astronomical Optics and Technology, National Astronomical Observatories, Chinese Academy of Sciences
Yuefei Wang: Nanjing Institute of Astronomical Optics and Technology, National Astronomical Observatories, Chinese Academy of Sciences
Jianrong Shi: Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
Wei Zhang: Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences

DOI: https://doi.org/10.1038/ncomms11058
Journal volume & issue: Vol. 7, no. 1
pp. 1 – 9

Abstract

Read online

Superflares are large explosive events on stellar surfaces, much larger than solar flares, but it remains unclear whether they share the same origin. Here, the authors analysed 48 superflare stars and determine the relation between their chromospheric activity and the occurrence of superflares.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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