Radio signatures of star–planet interactions, exoplanets and space weather

Autor(en)

J. R. Callingham, B. J.S. Pope, R. D. Kavanagh, S. Bellotti, S. Daley-Yates, M. Damasso, J. M. Grießmeier, M. Güdel, M. Günther, M. M. Kao, B. Klein, S. Mahadevan, J. Morin, J. D. Nichols, R. A. Osten, M. Pérez-Torres, J. S. Pineda, J. Rigney, J. Saur, G. Stefánsson, J. D. Turner, H. Vedantham, A. A. Vidotto, J. Villadsen, P. Zarka

Abstrakt

Radio detections of stellar systems provide a window onto stellar magnetic activity and the space weather conditions of extrasolar planets — information that is difficult to obtain at other wavelengths. The maturation of low-frequency radio instruments and the plethora of wide-field radio surveys have driven recent advances in observing auroral emissions from radio-bright low-mass stars and exoplanets. To guide us in putting these recent results in context, we introduce the foremost local analogues for the field: solar bursts and the aurorae found on Jupiter. We detail how radio bursts associated with stellar flares are foundational to the study of stellar coronae, and time-resolved radio dynamic spectra offer one of the best prospects for detecting and characterizing coronal mass ejections from other stars. We highlight the possibility of directly detecting coherent radio emission from exoplanetary magnetospheres, as well as early tentative results. We bridge this discussion with the field of brown dwarf radio emission — the larger and stronger magnetospheres of these stars are amenable to detailed study with current instruments. Bright, coherent radio emission is also predicted from magnetic interactions between stars and close-in planets. We discuss the underlying physics of these interactions and the implications of recent provisional detections for exoplanet characterization. We conclude with an overview of outstanding questions in the theory of stellar, star–planet interaction and exoplanet radio emission and the potential of future facilities to answer them.

Organisation(en)

Institut für Astrophysik

Externe Organisation(en)

Netherlands Institute for Radio Astronomy (ASTRON), Leiden University, University of Queensland, University of Southern Queensland, University of St. Andrews, INAF-Osservatorio Astrofisico di Torino, Université d’Orléans, Centre National De La Recherche Scientifique (CNRS), Université de recherche Paris Sciences et Lettres, European Space Research & Technology Centre (ESA/ESTEC), University of California, Santa Cruz, Lowell Observatory, University of Oxford, Pennsylvania State University, Laboratoire Univers et Particules de Montpellier, University of Leicester, Space Telescope Science Institute, Johns Hopkins University Krieger School of Arts and Sciences, Instituto de Astrofísica de Andalucía, European University Cyprus, University of Colorado, Boulder, Dublin Institute for Advanced Studies, Armagh Observatory, Queen's University Belfast, Universität zu Köln, Princeton University, Cornell University, University of Groningen, Bucknell University

Journal

Nature Astronomy

Band

8

Seiten

1359-1372

Anzahl der Seiten

14

ISSN

2397-3366

DOI

https://doi.org/10.1038/s41550-024-02405-6

Publikationsdatum

11-2024

Peer-reviewed

Ja

ÖFOS 2012

103003 Astronomie, 103004 Astrophysik

ASJC Scopus Sachgebiete

Astronomy and Astrophysics

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/dc4df189-1345-4e09-bba0-d252a75d16b9