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Formation of Giant Planets

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arxiv 2504.04090 v1 pith:INS5PJH4 submitted 2025-04-05 astro-ph.EP

classification astro-ph.EP
keywords formationgiantplanetsplanetarychallengesconstraintsexoplanetsissue
verification ladder T0 review T1 audit T2 compute T3 formal
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Gas giant planets, if present, are the most massive objects in a planetary system and play a pivotal role in shaping its overall architecture. The formation of these planets has constantly been a central issue in planetary science. Increasing evidence from spacecraft explorations of Jupiter and Saturn, as well as telescope observations of exoplanets, has provided new constraints on the formation process of gas giant planets. The classic challenge of explaining formation timescales still remains a significant issue, while new constraints on planetary interiors have introduced additional complexities. Recent shifts away from the single-size planetesimal hypothesis, nevertheless, show promise in resolving these problems. Additionally, various discoveries regarding exoplanets have led to theoretical improvements, while the discovery of numerous super-Earths and sub-Neptunes has posed new challenges in understanding gas accretion. This review synthesizes the latest theoretical advancements, discussing resolved issues and emerging challenges in giant planet formation.

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Forward citations

Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

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    astro-ph.GA 2026-08 accept novelty 6.0 of 10

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  2. The Longest-period Young Transiting Exoplanets. A Duo of Puffy Giants inside a Debris Disk

    astro-ph.EP 2026-07 conditional novelty 6.0 of 10

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  3. POLARIS: A High-contrast Polarimetric Imaging Benchmark Dataset for Exoplanetary Disk Representation Learning

    astro-ph.EP 2025-06 conditional novelty 6.0 of 10

    POLARIS is a new exoplanet imaging benchmark combining archival SPHERE/IRDIS polarimetric data with machine learning baselines, including a diffusion-enhanced contrastive method that classifies disk versus reference i...

  4. Ten Aligned Orbits: Planet Migration in the Era of JWST and Ariel

    astro-ph.EP 2025-05 conditional novelty 6.0 of 10

    Ten new projected spin-orbit angles, all consistent with alignment, plus a true obliquity for a brown dwarf and a completeness study of JWST/Ariel atmospheric targets.

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