Star Planet Interactions

arXiv:2607.03874 · astro-ph.SR, astro-ph.EP · Submitted 2026-07-04 · Read on arXiv

Arghyadeep Paul, Kristina Kislyakova, Manuel Güdel, Rim Fares, Judy Chebly, Sergio Joya, Miljenko Čemeljić, Katja Poppenhäger, Julian Alvarado-Gomez, Silva Järvinen, Cesar Bertucci, Dibyendu Nandy, Antonio García Muñoz, Antoine Strugarek, Mayank Narang, Shyama Narendranath

astro-ph.SR, astro-ph.EP

Submitted: 2026-07-04

Comments: Submitted to Space Science Reviews

License: http://creativecommons.org/licenses/by-nc-sa/4.0/

The gist: Star-planet interactions (SPIs) describe the continuous exchange of energy, momentum, and mass between exoplanets and their host stars through radiative, tidal, magnetic, and particle-driven

Terminology

Core — 25× in this paper · explained in 2 episodes
Scaling Laws — 13× in this paper · explained in 4 episodes
Alignment — 9× in this paper · explained in 1 episode
Cyclotron Maser Instability — 8× in this paper
Coronal Mass Ejections — 7× in this paper
Abundance — 6× in this paper · explained in 1 episode
Electron Cyclotron Maser — 6× in this paper
Trace — 6× in this paper · explained in 2 episodes
Consistency — 5× in this paper · explained in 3 episodes
Electron Cyclotron Maser Instability — 5× in this paper
Clustering — 4× in this paper · explained in 2 episodes
European Research Council — 4× in this paper
Square Kilometre Array — 4× in this paper
Unified Framework — 3× in this paper · explained in 5 episodes
Adam — 2× in this paper · explained in 2 episodes
Archetype — 2× in this paper · explained in 1 episode
Benchmark — 2× in this paper · explained in 2 episodes
Momentum transfer — 2× in this paper · explained in 2 episodes
Zeeman-Doppler Imaging — 2× in this paper
Accuracy — 1× in this paper · explained in 1 episode
Active Regions — 1× in this paper · explained in 1 episode
Ambipolar Diffusion — 1× in this paper · explained in 1 episode
American Geophysical Union — 1× in this paper
Anisotropy — 1× in this paper · explained in 3 episodes
Aperture — 1× in this paper · explained in 1 episode
Archean — 1× in this paper · explained in 1 episode
Basal Magma Ocean — 1× in this paper
Calibration — 1× in this paper · explained in 7 episodes
Conservation Laws — 1× in this paper · explained in 3 episodes
Induced Magnetosphere Boundary — 1× in this paper
Metallicity — 1× in this paper · explained in 3 episodes
Population Synthesis — 1× in this paper · explained in 2 episodes
Predictive Modeling — 1× in this paper · explained in 2 episodes
Robustness — 1× in this paper · explained in 5 episodes
Verification — 1× in this paper · explained in 2 episodes

Abstract

Star-planet interactions (SPIs) describe the continuous exchange of energy, momentum, and mass between exoplanets and their host stars through radiative, tidal, magnetic, and particle-driven processes. Together, these interactions shape the structure, evolution, and observable properties of exoplanetary systems. In this review, we bring together current theoretical and observational understanding of SPIs, highlighting how stellar radiation, winds, and magnetic activity influence planetary atmospheres, interiors, and orbital evolution, while using the Solar System as a valuable reference for interpreting these processes. High-energy stellar radiation, particularly in the far- and extreme-ultraviolet and X-ray bands, drives atmospheric heating, photochemistry, ionisation, and escape. These effects are further influenced by stellar winds and magnetic interactions, which can either protect planetary atmospheres or accelerate their loss over time. Tidal interactions redistribute energy and angular momentum, producing internal heating and driving orbital migration and circularisation. Magnetic star-planet coupling provides additional pathways for energy transfer through reconnection and current systems, potentially enhancing atmospheric escape, heating planetary ionospheres and interiors, and generating observable signatures such as radio emission and enhanced stellar activity. We discuss how these processes work together, emphasising that their long-term impact depends on stellar evolution, planetary properties, atmospheric structure, and magnetic field strength. By presenting radiative, tidal, and magnetic interactions within a unified framework, this review highlights the physical mechanisms that shape planetary environments and identifies the key observational signatures that will complement future studies of exoplanet evolution and habitability.

Star Planet Interactions

Terminology

Abstract

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