Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Articles Article Faculty Publications -Articles Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Probing the formation of megaparsec-scale giant radio galaxies: I. Dynamical insights from magnetohydrodynamic simulations Subject The topic of the resource Galaxies: active; Galaxies: groups: general; Galaxies: jets; Magnetohydrodynamics (MHD); Methods: numerical Description An account of the resource Context. Constituting a relatively small fraction of the extended-jetted population, giant radio galaxies (GRGs) form in a wide range of jet and environment configurations. This observed diversity complicates the identification of the growth factors that facilitate their attainment of megaparsec scales. Aims. This study aims to numerically investigate the hypothesized formation mechanisms of GRGs extending ?1 Mpc in order to assess their general applicability. Methods. We employed tri-axial ambient medium settings to generate varying levels of jet frustration and simulated jets with a low and a high power from different locations in the environment. This approach formulated five representations evolving under a relativistic magnetohydrodynamic framework. Results. The emergence of distinct giant phases in all five simulated scenarios suggests that GRGs may be more common than previously believed. This prediction can be verified with contemporary and forthcoming radio telescopes. We find that different combinations of jet morphology, power, and evolutionary age of the formed structure hold the potential to elucidate different formation scenarios. In all of these cases, the lobes are overpressured, prompting further investigation into pressure profiles when jet activity ceases, potentially distinguishing between relic and active GRGs. We observed a potential phase transition in GRGs marked by differences in lobe expansion speed and pressure variations compared to their smaller evolutionary phases. This suggests the need for further investigation across a broader parameter space to determine if lobe evolution in GRGs fundamentally differs from smaller radio galaxies. The axial ratio analysis reveals self-similar expansion in rapidly propagating jets, while there is a notable deviation when the jet forms wider lobes. Overall, this study emphasizes that multiple growth factors simultaneously at work can better elucidate the current-day population of GRGs, including scenarios such as the growth of GRGs in dense environments, GRGs extending several megaparsecs, development of GRGs in low-powered jets, and the formation of morphologies such as GRG-XRGs. The Authors 2025. Creator An entity primarily responsible for making the resource Giri G.; Bagchi J.; Thorat K.; Deane R.P.; Delhaize J.; Saikia D.J. Source A related resource from which the described resource is derived Astronomy and Astrophysics, Vol-693 Publisher An entity responsible for making the resource available EDP Sciences Date A point or period of time associated with an event in the lifecycle of the resource 2025-01-01 Identifier An unambiguous reference to the resource within a given context <a href="https://doi.org/10.1051/0004-6361/202451812" target="_blank" rel="noreferrer noopener">https://doi.org/10.1051/0004-6361/202451812</a> <br /><br /><a href="https://www.scopus.com/inward/record.uri?eid=2-s2.0-85215374760&amp;doi=10.1051%2F0004-6361%2F202451812&amp;partnerID=40&amp;md5=f2b70ef8515ce25d173e4103acb23bc9" target="_blank" rel="noreferrer noopener">https://www.scopus.com/inward/record.uri?eid=2-s2.0-85215374760&amp;doi=10.1051%2f0004-6361%2f202451812&amp;partnerID=40&amp;md5=f2b70ef8515ce25d173e4103acb23bc9</a> Rights Information about rights held in and over the resource Restricted Access Relation A related resource ISSN: 46361; CODEN: AAEJA Format The file format, physical medium, or dimensions of the resource Online Language A language of the resource English Type The nature or genre of the resource Article Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Giri G., Department of Physics, University of Pretoria, Private Bag X20, Hatfield, 0028, South Africa, South African Radio Astronomy Observatory, 2 Fir St, Black River Park, Observatory, 7925, South Africa; Bagchi J., Department of Physics and Electronics, Christ University, Hosur Road, Bangalore, 560029, India; Thorat K., Department of Physics, University of Pretoria, Private Bag X20, Hatfield, 0028, South Africa; Deane R.P., Department of Physics, University of Pretoria, Private Bag X20, Hatfield, 0028, South Africa, Wits Centre for Astrophysics, School of Physics, University of the Witwatersrand, 1 Jan Smuts Avenue, Johannesburg, 2000, South Africa; Delhaize J., Department of Astronomy, University of Cape Town, Private Bag X3, Rondebosch, 7701, South Africa; Saikia D.J., Inter-University Centre for Astronomy and Astrophysics, Post Bag 4, Pune, 411007, India