The Swarbhanu Event Horizon: A Comparative Analysis of the Tamil 'Shadow Planet' Axis and the Primordial Black Hole Hypothesis

Is the elusive Planet Nine (also known as the Ninth Planet) actually a Primordial Black Hole (PBH)? This research paper presents a comparative analysis linking modern astrophysical hypotheses regarding the Planet 9 anomaly with ancient Indian cosmological descriptions of the "Shadow Planet" axis (Rahu and Ketu). Recent studies (Scholtz & Unwin, 2019) suggest that the gravitational perturbations observed in the Kuiper Belt and Trans-Neptunian Objects (ETNOs) are best explained by a captured Primordial Black Hole orbiting at the edge of the Solar System. This paper argues that this "Dark Anchor" was anticipated in the Brihat Samhita and Puranic texts. Key findings include: The Swarbhanu Event: A functional correlation between the Rahu-Ketu axis and a Bipolar Gravitational Model stabilized by a central mass (Sun) and a peripheral singularity (Planet 9). The Heliopause Connection: Identification of the mythological "Lokaloka" mountain with the modern Heliosphere boundary. Accretion Physics: Correlating the ancient description of Ketu as "Smoky" (Dhumraketu) with the Bondi-Hoyle accretion signatures of a quiescent black hole interacting with the Oort Cloud. This synthesis offers a novel perspective on Dark Matter, the history of astronomy, and the potential discovery of the Ninth Planet. ----- Keywords:- Planet Nine, Planet 9, Ninth Planet, Primordial Black Hole, PBH, Planet 9 Hypothesis, Dark Matter, Solar System, Trans-Neptunian Objects, Kuiper Belt, Archaeoastronomy, Vedic Cosmology, Rahu and Ketu, Swarbhanu, History of Astronomy, Accretion Physics, Heliopause, Dhumraketu, Indian Astronomy